Lock cylinder

Abstract

The invention relates to a lock cylinder. The lock cylinder comprises a lock cylinder body with a key slot for a key. The lock cylinder is further provided with a locking device, the locking device is provided with a verification pin which is pre-tightened towards the key groove and a locking pin which is pre-tightened into a locking position, and the locking pin can prevent the lock cylinder body from rotating into the opening position in the locking position. The verification pin can be pushed into a verification position by the key, and the verification pin and / or the locking pin have permanent magnets at end sections facing each other, which permanent magnets are configured to hold the locking pin in a release position when the verification pin is pushed into the verification position, in which the locking pin is in an open position and releases the lock cylinder core.

Description

Technical Field

[0001] This invention relates to a lock cylinder, comprising a lock cylinder housing having a cylinder receiving section and a lock cylinder core rotatably supported in the cylinder receiving section about a lock cylinder rotation axis between a closed position and an open position. The lock cylinder core has a keyway extending along the lock cylinder rotation axis, into which a matching key can be inserted in the keyway via a key insertion opening in a key insertion direction. The keyway has an elongated cross-section having two opposing wide sides and two opposing narrow sides. Furthermore, the lock cylinder includes at least one tumbler configured to lock the lock cylinder core in the closed position when the key is not inserted into the keyway, preventing it from rotating to the open position. By inserting the matching key, the at least one tumbler can be switched to a release configuration in which the at least one tumbler releases the lock cylinder core, allowing it to rotate relative to the lock cylinder housing. Background Technology

[0002] This type of lock cylinder can be applied to various scenarios, such as door locks, to selectively release the door to open or lock it to prevent opening. For this purpose, the rotatable lock cylinder body can be directly or indirectly connected to the bolt, and rotating the lock cylinder body drives the bolt. When the lock cylinder body is in the closed position, the bolt can be engaged in a corresponding receiving part on the door frame, thereby locking the door and preventing it from moving relative to the door frame. When the lock cylinder body is rotated to the open position, the bolt can be disengaged from the receiving part, allowing the door to be released and opened. Similarly, this type of lock cylinder can also be used to lock windows or window handles, and can also be used in clamp locks, where rotating the lock cylinder between the closed and open positions can lock the clamp relative to the lock body, or release it relative to the lock body.

[0003] To prevent unauthorized operation of the lock cylinder, one or more pins can be configured to prevent the lock cylinder body from rotating relative to the lock cylinder housing in the closed position when the key is not inserted into the key slot, and / or prevent the lock cylinder body from rotating into the open position. For example, for this purpose, at least one pin can be configured as a pin retainer, comprising a housing pin arranged in the lock cylinder housing and pre-tensioned to the lock cylinder body by a pin spring, and a core pin arranged in the lock cylinder body, wherein, when the matching key is not inserted into the key slot, the housing pin can be embedded in the lock cylinder body, thereby preventing the lock cylinder body from rotating relative to the lock cylinder housing. By inserting a matching key configured to convert at least one pin to a release configuration, the core pin and the housing pin driven by the core pin are displaced against spring pre-tension, wherein the matching key can directly push the core pin to the outside of the lock cylinder body. Therefore, when the matching key is fully inserted into the key slot, the housing pin can be located on the outside of the lock cylinder body, thereby releasing the lock cylinder body from locking and allowing it to rotate relative to the lock cylinder housing. In particular, the lock cylinder may have multiple such pins, and the matching key may be configured to switch all pins to the release configuration to release the lock cylinder body and rotate it to the open position.

[0004] In principle, this type of lock cylinder can be configured to be robust and reliable, enabling various locks to possess high anti-pry security. However, the coding possibilities of traditional lock cylinders are often limited by the number and configuration of the pins. Therefore, any key capable of adjusting one or more pins to the release configuration can turn the cylinder body into the open position. To further enhance the anti-illegal operation security of the lock cylinder and strengthen the anti-counterfeiting capabilities of the matching key, there is an urgent need for a lock cylinder with coding possibilities beyond the pins themselves, capable of verifying more characteristics of the matching key, thereby increasing the difficulty of counterfeiting the matching key. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a lock cylinder of the above type that has expanded coding possibilities, thereby improving the anti-counterfeiting protection capability of the matching key.

[0006] The above-mentioned objective of the present invention is achieved by a lock cylinder having the features of claim 1.

[0007] The lock cylinder has a locking device including a verification pin and a locking pin. The verification pin is preloaded into the keyway and (at least when the key is not fully inserted into the keyway) engaged in the keyway. The locking pin is aligned with the verification pin. The locking pin is preloaded outward relative to the lock cylinder's axis of rotation into the locked position, in which it is configured to prevent and / or lock the lock cylinder body from rotating into the open position.

[0008] By fully inserting the matching key into the key slot, the verification pin can be pushed into the verification position, specifically against its preload. Furthermore, the verification pin has a permanent magnet at its end section facing the locking pin, and / or the locking pin has a permanent magnet at its end section facing the verification pin, wherein when the verification pin is pushed into the verification position, the permanent magnet can hold the locking pin in the release position against its preload, in which the locking pin releases the lock cylinder, allowing it to rotate into the open position.

[0009] Because the lock cylinder has a locking device including a locking pin, which prevents the lock cylinder body from rotating to the open position in the locked position, an additional security level and coding is achieved compared to a method that only codes the lock cylinder body using at least one tumbler. Specifically, the key that operates the lock cylinder body and rotates it from the closed position to the open position requires not only switching at least one tumbler to the release configuration but also cooperating with a verification pin so that the key can move the verification pin to the verification position, thereby holding the locking pin in the release position and releasing the lock cylinder body. This is achieved in particular by forming a coding protrusion on the key, which, when the key is fully inserted into the keyway, pushes the verification pin against its preload into the verification position. This will be explained in further detail below.

[0010] In some implementations, the verification position is a precisely defined location, and the locking pin can only be held in the released position if the verification pin reaches this position. Therefore, the lock cylinder can be encoded using various encoding possibilities beyond the pins, such as the depth of the verification pin embedded in the key slot, the positioning of the verification pin and its location within the key slot, the lengths of the verification pin and locking pin, the preload strength of the verification pin and locking pin, and / or the strength of the permanent magnet. In particular, this type of encoding based on the lock cylinder requires a highly matched encoding protrusion at a matching position on the key to move the verification pin to the verification position, thus ultimately increasing the difficulty of counterfeiting the matching key by incorporating a locking device.

[0011] Meanwhile, this type of coding can be implemented at a relatively low cost in the production of lock cylinders and matching keys. This is because only two additional pins need to be added to the lock cylinder body—a verification pin and a locking pin—and pre-tightened accordingly. The key only requires an additional coding protrusion. Furthermore, permanent magnets can be easily press-fitted onto the corresponding end sections, for example. In this respect, compared to placing magnets on the key, using permanent magnets on the verification pin and / or locking pin improves the durability and fault tolerance of the lock cylinder. This is because the locking pin and verification pin only move during lock cylinder operation and, unlike magnets on the key, are not subject to friction during key transport, thus preventing the permanent magnets from falling off.

[0012] To retain the locking pin in the released position, the permanent magnet can be configured to attract the verification pin or locking pin that does not have a permanent magnet. Therefore, at least one of the locking pin and verification pin that does not have a permanent magnet needs to have a magnetic material at its end section facing the permanent magnet, and / or be made of a magnetic material. In particular, the corresponding pin as a whole is made of a magnetic material. Furthermore, in embodiments where the verification pin and locking pin have corresponding permanent magnets, the permanent magnets are polarized in opposite directions to achieve attraction between the locking pin and the verification pin, thereby retaining the locking pin in the released position.

[0013] Specifically, it can be configured such that when the verification pin is in the verification position and the locking pin is in the release position, the verification pin and the locking pin are in mechanical contact in the release position. Therefore, if the verification pin is in the verification position, the locking pin can be in direct contact with the verification pin in the release position. However, alternatively, it can be configured such that when the verification pin is in the verification position, direct contact between the verification pin and the locking pin is not required; the permanent magnet can resist the preload of the locking pin and hold it in the release position.

[0014] Furthermore, the strength of the permanent magnet can be selected such that when the verification pin enters the verification position, the permanent magnet can pull the locking pin from the locked position to the released position and hold it in that position. Alternatively, the locking pin can be moved towards the verification pin in the verification position by other means, such as moving it until it enters the released position, before effective contact can be formed between the locking pin and the permanent magnet, thereby holding it in the released position by the permanent magnet. In such embodiments, the strength of the permanent magnet is therefore only sufficient to compensate for the force acting on the locking pin in the released position and in the direction of the locked position, without needing to overcome the preload of the locking pin and pull it to the released position. Such embodiments of moving the locking pin towards the verification pin and related possibilities will be further described in detail below.

[0015] The locking pin is typically located within the lock cylinder body, but in the locked position, it can extend out of the lock cylinder body and embed itself in the lock cylinder housing, thereby preventing the lock cylinder body from rotating relative to the lock cylinder housing to the unlocked position. Alternatively, it can be configured so that when the verification pin is not in the verification position and / or the locking pin is not in the released position, the lock cylinder body can still rotate around a preset angle until the locking pin locks it to prevent further rotation towards the unlocked position. This will be explained in further detail below.

[0016] In some embodiments, the lock cylinder may have multiple pins, wherein these pins are particularly configured as pin-type pins. Such pin-type pins may include pin springs and a housing pin disposed within the lock cylinder housing and pre-tensioned to the lock cylinder core by the pin springs. Furthermore, the pin-type pins also include a core pin disposed within the lock cylinder core. When the key is not inserted into the key slot, the housing pin may extend out of the lock cylinder housing and engage with the lock cylinder core, thereby preventing the lock cylinder core from rotating relative to the lock cylinder housing. However, the matching key has a conversion mechanism, particularly a conversion protrusion and / or conversion groove, which, when the matching key is inserted into the key slot, pushes the core pin outward, thereby displacing the housing pin out of the lock cylinder core, unlocking the lock cylinder core and allowing it to rotate. Such pin-type pins are well known to those skilled in the art.

[0017] Furthermore, in some embodiments, in particular, a pin and / or a verification pin may be provided to be embedded in the key slot on the wide side of the key slot, so in particular the above-mentioned conversion structure and / or the coding protrusion that cooperates with the verification pin may be formed on the wide side of the key of the matching key.

[0018] The lock cylinder is particularly configured as a profile cylinder conforming to German industrial standard DIN 18252. In this type of profile cylinder, the cylinder housing has a core housing section for accommodating the cylinder body, and a flange section extending radially outward along the rotation axis of the cylinder body, in which the housing pin and tumbler spring can be arranged. However, the invention is not limited to profile cylinders; for example, the cylinder can also be constructed as a circular or elliptical cylinder with a correspondingly shaped cylinder housing.

[0019] Within the scope of this disclosure, unless otherwise explicitly mentioned, the radial and axial directions are referenced to the lock cylinder rotation axis and the longitudinal axis of the mating key. Furthermore, when the mating key is inserted into the key slot, its longitudinal axis coincides with the lock cylinder rotation axis. Additionally, the key can typically be inserted into the key slot along or parallel to the lock cylinder rotation axis; therefore, the direction of extension of the lock cylinder rotation axis is the key insertion direction. Alternatively, the key can also be inserted into the key slot along its own longitudinal axis.

[0020] Other embodiments of the present invention are further described in the dependent claims, the specification and the drawings.

[0021] In some implementations, the permanent magnet may be positioned at the end section of the verification pin.

[0022] In some embodiments, when the lock cylinder is in the closed position, the locking pin can be engaged in a locking recess formed on the lock cylinder housing. Specifically, in such embodiments, if the verification pin is not in the verification position, the locking pin can prevent the lock cylinder from rotating out of the closed position by engaging the locking recess. However, in some embodiments, if the verification pin is not in the verification position when the lock cylinder rotates, the locking pin can be guided out of the locking recess along a verification ramp adjacent to the locking recess until the lock cylinder has rotated about a preset angle, at which point the locking pin will lock the lock cylinder to continue rotating towards the open position. This will be described in further detail below.

[0023] In some implementations, the verification pin may be embedded in the key slot on the wide side of one of the key slots.

[0024] Furthermore, in some embodiments, the preload of the verification pin can be greater than the preload of the locking pin. In particular, by setting the preload of the verification pin to be greater than that of the locking pin, it can be ensured that the verification pin can hold the locking pin in the released position and prevent the verification pin from being pulled to an outer position beyond the verification position due to the preload of the locking pin. Specifically, it can be configured such that when the verification pin is in the verification position, the force exerted on it by the preload, facing the keyway, is greater than the outward force exerted on the locking pin by the preload when it is in the released position.

[0025] As an alternative or supplementary solution, in some implementations, when the verification pin is in the verification position, it can contact the retaining edge on the lock cylinder body, and the retaining edge can lock the verification pin from moving outward. This structure also prevents the verification pin from being pulled outward by the locking pin, avoiding the situation where the locking pin is still embedded in the lock cylinder housing even when the verification pin is in the verification position.

[0026] Furthermore, in some embodiments, the strength of the permanent magnet can be greater than the outward force on the locking pin in the released position, but less than the sum of the outward force on the locking pin in the released position and the inward force on the verification pin in the verification position, facing the keyway. Specifically, when the verification pin is in the verification position, the inward force generated by the preload can be offset by a coded protrusion on the matching key, which prevents the verification pin from moving towards the keyway. Because the strength of the permanent magnet is greater than the outward force on the locking pin, the locking pin can remain in the released position after the matching key is inserted. However, when the key is removed, the inward force on the verification pin is no longer offset, and the resultant force of the opposing preloads of the two pins is greater than the magnetic force of the permanent magnet. Therefore, the locking pin can be pushed into the locked position, thereby locking the lock cylinder and preventing it from being illegally rotated to the open position.

[0027] In some embodiments, the lock cylinder housing may have an authentication profile. By rotating the lock cylinder body from the closed position to the authentication rotated position, the locking pin can be guided along the authentication profile, thereby moving toward the authentication pin, and particularly being pushed into the release position. Furthermore, when the authentication pin is in the authentication position, after the lock cylinder body is rotated to the authentication rotated position, the locking pin and / or the authentication pin can form effective contact with the permanent magnet. In other words, if the key is simultaneously fully inserted into the keyway, a magnetic force-fitting connection can be formed between the locking pin and the authentication pin.

[0028] Specifically, rotating the lock cylinder to the verification rotation position pushes the lock stop pin towards the verification pin direction. For this purpose, the verification profile can be provided with a verification ramp that rises towards the keyway along the lock cylinder's rotation direction. During the lock cylinder's rotation, the lock stop pin can slide along the verification ramp. When the verification pin is in the verification position, the permanent magnet can apply sufficient attraction to the lock stop pin and the verification pin, ensuring that the lock stop pin remains in the released position after the lock cylinder has rotated to the verification rotation position. In particular, rotating the lock cylinder can rotate the lock stop pin to the released position and / or create mechanical contact between the lock stop pin and the verification pin in the verification position, thereby holding the lock stop pin in the released position via the verification pin.

[0029] However, in principle, the lock cylinder can still rotate even if the verification pin is not in the verification position, i.e., no key configured to engage with the verification pin is inserted in the key slot. Specifically, even if the key can only switch at least one pin to the release position without the additional code to push the verification pin to the verification position, the lock cylinder can still be rotated to the verification rotation position. In this case, the lock stop pin and the permanent magnet cannot make effective contact, thus preventing the lock cylinder from rotating further, especially preventing it from rotating to the open position.

[0030] Generally, making effective contact between the locking pin and / or the verification pin and the permanent magnet means reducing the distance between the locking pin and the verification pin to a preset range so that the permanent magnet can generate sufficient attraction to keep the locking pin in the released position, and in particular, to maintain mechanical contact between the locking pin and the verification pin.

[0031] In some embodiments, the verification profile may have a verification ramp, along which the locking pin can slide from the closed position to the verification position during lock cylinder rotation. In particular, such a verification ramp can guide the rotational movement of the lock cylinder, converting the rotational movement into a pre-tensioned movement of the locking pin towards the verification pin. Therefore, viewed along the direction of rotation of the lock cylinder from the closed position to the open position, the verification ramp rises towards the keyway and thus towards the verification pin.

[0032] In some embodiments, the verification profile may have a verification section that extends at least to the outside of the lock cylinder body, and the locking pin contacts the verification section when the lock cylinder body is in the verification rotation position.

[0033] In particular, by rotating the lock cylinder body to the verification rotation position, the lock stop pin can be rotated to a position where it is no longer embedded in the lock cylinder housing. If the lock stop pin can be held in the verification rotation position, i.e., the released position, the lock stop pin is no longer embedded in the lock cylinder housing, and the lock cylinder body can continue to rotate, especially to the open position. By setting up this verification section, after the lock cylinder body rotates to the verification rotation position, it is only necessary to hold the lock stop pin in that position, i.e., the verification pin takes over the positioning of the lock stop pin, without having to push the lock stop pin to move by the magnetic force of a permanent magnet against pre-tightening.

[0034] In some embodiments, if the verification pin is not in the verification position, the lock cylinder can rotate from the verification rotation position to the open position and then to the locking rotation position. Furthermore, if the verification pin is not in the verification position, when the lock cylinder is rotated from the verification rotation position to the locking rotation position, the locking pin, under its preload, can engage with the locking receiving portion on the verification contour. The locking receiving portion has a locking boss that mates with the locking pin. When the lock cylinder reaches the locking rotation position, the locking pin engaged in the locking receiving portion abuts against the locking boss.

[0035] In particular, if the verification pin is not in the verification position, and the locking pin is not engaged and held in the release position when passing through the verification rotation position, then when the lock cylinder rotates to the locking rotation position, the locking pin is pushed into the locking position. Therefore, this verification profile makes it possible to first move the locking pin towards the verification pin by rotating the lock cylinder to the verification rotation position; if the verification pin is in the verification position, the locking pin can be held in the release position, releasing the lock cylinder so that it can rotate to the open position. Conversely, if a key configured to engage with the verification pin is not inserted in the keyway, causing the verification pin to be not in the verification position, then when the lock cylinder rotates from the verification rotation position to the open position, the locking pin will move outward again under its preload and eventually engage in the locking receiver, thereby preventing the lock cylinder from continuing to rotate past the locking rotation position towards the open position.

[0036] Therefore, in some implementations, it is generally possible to configure the lock cylinder body to rotate from the closed position to the locked rotation position if the verification pin is not in the verification position, regardless of whether the lock cylinder is provided with a verification profile and / or verification section. In this position, the locking pin, which is pre-tightened to the locked position, is embedded in the locking receiving portion formed on the lock cylinder housing, thereby preventing the lock cylinder body from continuing to rotate to the open position.

[0037] In some embodiments, if the verification pin is not in the verification position, the lock cylinder can rotate from the locked rotation position back to the closed position. In particular, in some embodiments, if the verification pin is not in the verification position, the lock cylinder can rotate between the closed position and the locked rotation position. This design is particularly suitable for scenarios where the key can only be removed from the key slot when the lock cylinder is in the closed position. Therefore, even if an incompatible key is mistakenly inserted, the lock cylinder can still be rotated back to the closed position and the key removed, while the abutment between the locking pin and the locking boss prevents the lock cylinder from rotating to the open position.

[0038] In some embodiments, the verification profile may have a return ramp, allowing the locking pin to be guided out of the locking receiving portion along the return ramp when the lock cylinder is rotated from the locking rotation position to the closed position. In this respect, the locking receiving portion may not have a locking boss in the direction facing the closed position, but instead has a return ramp that pushes the locking pin back against its preload. The return ramp may be adjacent to the aforementioned verification section, so that when the lock cylinder is rotated from the locking rotation position back to the closed position, the locking pin can be guided along the verification rotation position and the verification section, and from the verification section, guided back along the aforementioned verification ramp to the aforementioned locking recess. When the lock cylinder is in the closed position, the locking pin is engaged in the locking recess.

[0039] In some embodiments, the lock cylinder can be rotated from the closed position to the open position via a verification rotation position. However, in other embodiments, the lock cylinder may be configured to first rotate from the closed position to the verification rotation position along a first rotation direction, and then rotate from the verification rotation position to the open position along a second rotation direction opposite to the first rotation direction.

[0040] In particular, in some embodiments, the lock cylinder can be rotated continuously from the closed position to the open position. During rotation, the lock cylinder passes through a verification rotation position, in which the locking pin is engaged by the verification pin and remains in the released position as it continues to rotate towards the open position. Specifically, during this rotation, the lock cylinder can also pass through a locking rotation position, and the lock cylinder can only continue rotating beyond this position if the verification pin is in the verification position and the locking pin remains in the released position.

[0041] In other embodiments, the lock cylinder body may be required to first rotate along the first rotation direction to the verification rotation position before the locking pin can be rotated to the release position and received by the verification pin. After rotation along the first rotation direction, if the matching key is inserted into the key slot and the locking pin remains in the release position, the lock cylinder body can be rotated along the second rotation direction opposite to the first rotation direction to the open position. During rotation along the second rotation direction, the lock cylinder body will pass through the closed position. In this embodiment, the closed position may coincide with the locking rotation position. Therefore, if the verification pin is not pushed to the verification position, when the lock cylinder body rotates to the closed position, the locking pin will abut against the locking receiving portion. In this embodiment, the aforementioned locking recess may also form a locking receiving portion. Therefore, for example, when the lock cylinder body is in the closed position, if the lock cylinder body is not first rotated along the first rotation direction to the verification rotation position, the locking pin can directly abut against the locking protrusion blocking the second rotation direction.

[0042] In some embodiments, the permanent magnet may be configured to pull the locking pin to the release position against the preload of the locking pin when the verification pin is in the verification position. This type of embodiment can be particularly used as an alternative to the aforementioned embodiment with verification outline, where simply inserting a key configured to rotate the verification pin to the verification position allows the permanent magnet to pull the locking pin to the release position against the preload, and hold it in that position by the verification pin. In this type of embodiment, it may also be configured such that when the verification pin is in the verification position and the locking pin is in the release position, the sum of the preload forces on the verification pin and the locking pin is greater than the attractive force generated by the permanent magnet; therefore, when the lock cylinder rotates back to the closed position and the key is removed from the key slot, the locking pin can be pushed back into the locked position.

[0043] In some implementations, the matching key can be inserted into and removed from the key slot when the lock cylinder is in the closed position, and in particular, the matching key can be removed from the key slot only when the lock cylinder is in the closed position.

[0044] In some embodiments, the verification pin, the locking pin, and the corresponding preload elements (in particular the respective springs) for providing their respective preload forces can be pre-assembled in the assembly sleeve, and the lock cylinder has an assembly receiving portion into which the assembly sleeve can be inserted.

[0045] In particular, this pre-assembly of the locking device simplifies the overall assembly process of the lock cylinder. This is because instead of inserting the small components of the locking device (each pre-tightening element, verification pin, and locking pin) directly and individually into the lock cylinder body, they can be pre-assembled in an assembly sleeve, and then the entire locking device can be inserted into the assembly receiving part as a single assembly step. Specifically, the locking device may include an assembly sleeve, and / or the locking device may be pre-assembled entirely outside the lock cylinder body before being inserted into the lock cylinder body as a pre-assembled component.

[0046] In particular, the assembly sleeve may also have corresponding support edges for supporting each preload element. Furthermore, each preload element can be inserted from two opposite sides of the assembly sleeve, and correspondingly, the verification pin and locking pin can also be inserted from opposite sides of the assembly sleeve, thus the assembly sleeve can be configured as a structure with openings on both sides.

[0047] In some implementations, the verification pin can be pushed into the verification position by a coding protrusion provided in an axial groove extending from the key tip of the matching key.

[0048] The aforementioned cooperation structure between the verification pin and the locking pin enables precise detection of the height of the coded protrusion. If a key inserted into the key slot can move the tumbler to the release position, but its coded protrusion is too low, it cannot push the verification pin into the verification position. Furthermore, the distance between the verification pin and the locking pin cannot be reduced to a level sufficient to keep the locking pin in the release position, ultimately preventing the lock cylinder from rotating to the open position. Conversely, if the key inserted into the key slot has a coded protrusion that is too high, the verification pin will be pushed to a position outside the verification position. In this case, even if the locking pin contacts the verification pin and is held at the verification pin by a permanent magnet, it will still be embedded in the lock cylinder housing, thus preventing the lock cylinder from rotating. In an embodiment where the verification pin maintains edge contact with the lock cylinder when in the verification position, if the key's coded protrusion is too high, the key may not be fully inserted into the key slot. This is because, before the key is fully inserted, the coded protrusion presses the verification pin against the retaining edge, thus preventing further key insertion. In this regard, the design of the coding protrusions needs to be precisely matched in order to enable the lock cylinder to rotate to the open position.

[0049] Furthermore, the design of setting the coding protrusion in the axial groove places higher demands on the machining precision of the key, because the coding protrusion needs to be set at a precise height at the corresponding position on the key. As will be further explained below, the lock cylinder may also include other elements that mate with the groove and / or coding protrusion. Therefore, the coding protrusion must be set in the groove to mate with the verification pin; simply setting a large-area protrusion on the key cannot achieve this mating effect. In this type of implementation, a coding protrusion with a precisely precise height must be set at the corresponding position on the matching key to push the verification pin into the verification position, thereby holding the lock stop pin in the released position.

[0050] In some embodiments, the lock cylinder may also have a coding device, which includes a first axial boss and a second axial boss for a key. The first and second axial bosses are embedded in a key slot, and the second axial boss is offset relative to the first axial boss along the key insertion direction towards an axial end of the lock cylinder body away from the key insertion opening. The first axial boss has a channel through which a coding protrusion formed on the mating key passes, wherein the second axial boss forms a boss that abuts against the coding protrusion.

[0051] In particular, the coding protrusion is the aforementioned coding protrusion that cooperates with the verification pin and pushes the verification pin to the verification position. Furthermore, the matching key can be configured as a double-sided reversible key, with corresponding coding protrusions on both opposite wide sides of the key. The keys are inserted into the key slots with different orientations; one coding protrusion cooperates with the verification pin, and the other coding protrusion cooperates with the coding device, which will be described in further detail below.

[0052] By providing two mutually offset axial bosses for the key, the coding device can offer more coding possibilities for the key. For example, the axial position of the coding protrusion on the key can be verified by the second axial boss. For instance, if the coding protrusion is positioned too close to the key tip, it will abut against the second axial boss before the key is fully inserted into the key slot, preventing the lock cylinder from being operated. In particular, it may prevent the coding protrusion or another coding protrusion from contacting the verification pin. Furthermore, the first axial boss, by providing a channel for the coding protrusion to pass through, can also verify the width and position of the coding protrusion transverse to the key insertion direction. This is because coding protrusions that are too wide and / or have lateral positional deviations will abut against the edge of the first axial boss or the channel, preventing the corresponding key from being fully inserted into the key slot. In addition, in some embodiments, the channel is closed on the side opposite to the key slot, so the first axial boss can also verify the height of the coding protrusion.

[0053] Furthermore, the first axial boss can also form a boss that abuts against the matching key, thus allowing verification of the distance between the coding protrusion and the element on the key that abuts against the first axial boss, along the key insertion direction. If this distance is too small, the key will abut against the first axial boss before the coding protrusion reaches the second axial boss, preventing the key from being fully inserted into the key slot and thus rendering the lock cylinder inoperable. Therefore, the coding device further enriches the coding dimensions of the matching key, enhancing its anti-counterfeiting capabilities.

[0054] Therefore, in some embodiments, the matching key fully inserted into the key slot can simultaneously abut against the first axial boss and the second axial boss.

[0055] In some implementations, the encoding device and the verification pin are embedded in the key slot on the wide side of the key slot opposite to each other.

[0056] In particular, the lock cylinder body can be configured to be assembled from two lock cylinder body halves, and the assembly process is completed during the assembly process of the lock cylinder body and / or the lock cylinder. In some embodiments, the coding device and the verification pin can be arranged on two different lock cylinder body halves respectively.

[0057] In some implementations, the coding device and the verification pin may respectively engage with corresponding coding protrusions provided on the two wide sides of the key opposite to the matching key.

[0058] As mentioned earlier, the matching key can be a double-sided reversible key, with a symmetrical structure after rotating 180° around the lock cylinder's rotation axis. Therefore, the key can be inserted into the key slot in any orientation around this rotation axis, and regardless of the key's orientation, the corresponding coded protrusion can engage with the verification pin and the coding device respectively. This design verifies the position, width, and / or height of the coded protrusion through the coding device, and then re-verifies the position and height of the coded protrusion through the verification pin. Furthermore, by verifying the height of the coded protrusion twice, the impact of manufacturing tolerances can be reduced, thereby improving the key's anti-counterfeiting capabilities.

[0059] In some implementations, the channel has two lateral boundaries offset from each other in a direction perpendicular to the lock cylinder's rotation axis. As the key is inserted into the key slot, the coded protrusion can slide into the channel along these two lateral boundaries. In particular, the channel is bounded on both sides, thus enabling verification of the width of the coded protrusion and / or its position transverse to the lock cylinder's rotation axis.

[0060] In some embodiments, the end face of the lateral boundary facing the key insertion opening forms a first axial boss. In particular, it may be configured to abut against the end face of the lateral boundary when the mating key is fully inserted into the key slot, thereby defining the passageway boundary.

[0061] In some embodiments, the outer surface of the lateral boundary forms an inner guide portion that mates with a groove formed on the mating key, and a coding protrusion is disposed in the groove.

[0062] Therefore, the lateral boundary of the channel can directly mate with the groove, serving two purposes: guiding the key into the key slot and verifying the width of the groove. Since the channel of the encoding device provides space for the encoding protrusion to pass through, the encoding protrusion must be positioned within the groove of the matching key. This is because if the key has a wide protrusion, it will directly abut against the first axial boss. Furthermore, if the groove width is too small, the key will also directly abut against the first axial boss, preventing complete insertion into the key slot. Therefore, the encoding device can comprehensively verify the shape of the key in the key tip region, specifically including the position, width, and height of the encoding protrusion, as well as the width and / or length of the groove.

[0063] In some embodiments, the channel is arched, and the first axial boss has a connecting section that connects the lateral boundaries to each other on the side of the first axial boss away from the keyway.

[0064] From the perspective of the coding protrusion extending upward from the key bar, in some embodiments, the channel is a closed structure above the coding protrusion, thus enabling verification of the height of the coding protrusion.

[0065] An arched passageway can serve as a doorway through which the coded protrusion passes, and the connecting section of such an arched passageway can be straight, for example, approximately perpendicular to the lateral boundary. However, the connecting section can also be configured as an arcuate structure, for example, to enable accurate verification of frustum-shaped coded protrusions and / or coded protrusions with a circular or arcuate upper side. In this regard, in some embodiments, the passageway can also verify the shape of the end of the coded protrusion facing away from the key bar.

[0066] In some embodiments, the keyway extends laterally beyond the first and second boss elements, transverse to the key insertion direction. In this regard, in some embodiments, the wide side of the keyway extends transversely beyond the two axial bosses, transverse to the key insertion direction. With this configuration, for example, the key can be guided laterally over the axial bosses for the key at the key tip, thereby enabling, for example, guidance for key insertion.

[0067] In some implementations, the coding device can be arranged at the end section of the lock cylinder body opposite to the key insertion opening. Alternatively, the lock cylinder can have multiple pins, all of which can be arranged between the key insertion opening and the coding device. However, in designs where the coding device is arranged at the end section of the lock cylinder body opposite to the key insertion opening, the coding device can also be arranged between the key insertion opening and a groove formed on the lock cylinder body, the groove for mounting a retaining spring to axially fix the lock cylinder body within the lock cylinder housing. Furthermore, the coding device, in principle, does not occupy the installation space of the pins; therefore, the coding device can achieve additional coding of the lock cylinder without reducing the number of pins.

[0068] In some embodiments, the encoding device may be eccentrically arranged relative to the key slot, particularly laterally to the key insertion direction. In this regard, in such embodiments, the two axial bosses may also be eccentrically arranged, and / or neither axial boss is centrally embedded in the key slot relative to a lateral direction oriented laterally to the key insertion direction.

[0069] In some embodiments, the first axial boss and the second axial boss may be formed on the corresponding coding elements inserted into the lock cylinder, particularly on the corresponding small pieces.

[0070] In particular, in some embodiments, the first axial boss and the second axial boss can be formed on separate coding elements, which can be inserted into the lock cylinder body during the lock cylinder assembly process. For example, the inserted coding elements can directly contact each other.

[0071] In some embodiments, the lock cylinder body has a receiving portion for inserting coding elements. Specifically, in such embodiments, the coding element can be inserted into the receiving portion of the lock cylinder body during the lock cylinder assembly process, such that a first axial boss and a second axial boss are engaged in a keyway. For this purpose, the receiving portion may, for example, have corresponding edges to determine the radial positioning of the coding element and the depth to which the axial bosses are engaged in the keyway. Furthermore, in some embodiments, the lock cylinder body may have separate receiving portions for each coding element, or it may have a common receiving portion for all coding elements to be inserted, with the coding elements inserted into the common receiving portion being in contact with each other.

[0072] In some embodiments, the receiving portion has a receiving opening on the outer side of the lock cylinder body, through which the coding element can be inserted. The inserted coding element extends radially to the outer side of the lock cylinder body, and the curvature of its outer surface matches the curvature of the lock cylinder body. In this respect, the receiving opening can be closed by inserting the coding element, allowing the lock cylinder body to be assembled on the outer side, thereby enabling precise insertion into the cylinder receiving portion of the lock cylinder housing.

[0073] In some embodiments, the coding device may include an integral coding element, on which both the first axial boss and the second axial boss are formed. In particular, in such embodiments, the coding device may include a single coding element configured as a single material-bonded component, on which both the first axial boss and the second axial boss are formed simultaneously. Furthermore, in some embodiments, the integral coding element may be selectively inserted into the lock cylinder body, particularly into a receiving portion formed on the lock cylinder body, or it may be formed directly on the lock cylinder body, for example, molded with the lock cylinder body.

[0074] In some implementations, the integrated coding element may be arranged at the end of the key slot opposite the key insertion opening.

[0075] In some embodiments, the coding element is molded with the lock cylinder body. In particular, in some embodiments, the lock cylinder body comprises two lock cylinder body halves, wherein the coding element can be molded onto one of the lock cylinder body halves. For example, the lock cylinder body or its lock cylinder body halves can be manufactured using a zinc die-casting process, wherein the forming contour of the coding element can be pre-set in the mold used to manufacture one of the lock cylinder body halves, thereby directly forming and / or molding the coding element onto the corresponding lock cylinder body half.

[0076] In some embodiments, the coding element may be configured as a fork-shaped member having two extensions that define a channel and extend toward the key insertion opening. A coding protrusion can be inserted into the fork-shaped member between the two extensions. The extensions also form a first axial boss, and a receiving section on the side of the fork-shaped member opposite to the key insertion opening, connecting the two extensions, forms a second axial boss. Furthermore, in such embodiments, the extensions may specifically extend axially toward the key insertion opening to accommodate the coding protrusion. The base of the lock cylinder is positioned on the side of the channel opposite to the key slot, thus even in such embodiments, the coding element of the fork-shaped member can still verify the height of the coding protrusion.

[0077] The present invention also relates to a locking system, which includes a lock cylinder and a matching key as described in any of the above embodiments.

[0078] In particular, the matching key has a coded protrusion that mates with the verification pin. When the key is fully inserted into the key slot, the coded protrusion pushes the verification pin into the verification position. The height of the coded protrusion must be precisely matched to ensure that the verification pin is exactly in the verification position when the matching key is fully inserted into the key slot.

[0079] Furthermore, the matching key is configured to switch the pins to the release configuration after full insertion into the keyway, thereby unlocking the lock cylinder and allowing it to rotate relative to the lock cylinder housing. For this purpose, the matching key may in particular have a corresponding conversion mechanism that mates with each pin individually. These conversion mechanisms may be formed, in particular, on the wide side of the matching key.

[0080] In some embodiments, the matching key has an axial groove extending from the key tip, in which a coded protrusion is arranged. When the key is fully inserted into the key slot, the coded protrusion can push the verification pin into the verification position.

[0081] In particular, the coding protrusion can be formed on the wide side of the matching key, and thus the axial groove can also be formed on the wide side of the key. As mentioned earlier, by forming such coding protrusions and arranging them in the axial groove, further coding of the matching key can be achieved, and in particular, its anti-counterfeiting capability can be improved.

[0082] Axial grooves typically extend along the longitudinal axis of the matching key, but they are not limited to a straight shape. For example, the outer or lateral boundaries of the axial grooves may be straight or curved.

[0083] In some embodiments, the coding protrusion may be formed circumferentially free-standing in the groove. In particular, in such embodiments, the groove depth between the coding protrusion and the rear boundary of the groove away from the key tip coincides with the groove depth between the coding protrusion and the key tip. The circumferentially free-standing coding protrusion may have various shapes, such as frustum, cone, pyramid, pin, and / or hemispherical.

[0084] However, as an alternative, it is also common practice to set a coding protrusion that extends into the groove to form an axial rib, which extends to the rear boundary of the groove away from the key tip.

[0085] In some implementations, the coding protrusion has a recess on the verification surface facing the verification pin for the verification pin to be inserted, the verification surface being the surface of the coding protrusion facing the verification pin when the key is inserted into the key slot.

[0086] These recesses allow for further coding of the matching key. This is because the key factor driving the verification pin displacement is no longer the absolute or maximum height of the coding protrusion, but rather the maximum height of the coding protrusion minus the depth of the recess. When the key is fully inserted into the key slot, the verification pin is embedded in the recess. Therefore, for coding protrusions with the same maximum height, further coding can be achieved by setting a recess on the key. If the maximum height of the coding protrusions matches, but the recess is not provided, the verification pin will be placed in a position other than the verification position, causing the verification pin to be unable to be accurately positioned in the verification position, and the locking pin will therefore not remain in the released position.

[0087] Furthermore, in embodiments with the aforementioned encoding device, the height of the first axial boss of the encoding device through its channel can still verify the maximum height of the encoding protrusion.

[0088] In some embodiments, the matching key is a double-sided reversible key with an elongated key bar and two opposing wide sides and two opposing narrow sides. The two wide sides have grooves, each containing a coded protrusion. Such double-sided reversible keys are particularly configurable to be structurally symmetrical after rotating 180° about their longitudinal axis, allowing the matching key to be inserted into the key slot in any orientation around this axis. Regardless of the key's orientation, the corresponding coded protrusion engages with a verification pin.

[0089] In some embodiments, the lock cylinder has a coding device including a first axial boss and a second axial boss for a key, which are embedded in a key slot. Furthermore, the second axial boss is offset relative to the first axial boss along the key insertion direction towards an axial end of the lock cylinder body opposite to the key insertion opening. The first axial boss has a channel through which one of the two coding protrusions passes, and the second axial boss forms a protrusion for the coding protrusion, wherein when the coding protrusion contacts the second axial boss, the other coding protrusion of the matching key can push a verification pin into a verification position.

[0090] In this type of implementation, regardless of the orientation of the matching key, the two coding protrusions can each engage with the corresponding element, namely the second axial boss or the verification pin, to achieve the additional coding of the key described above.

[0091] The lock cylinder and / or key of the lock system may also have one or more features mentioned in the above lock cylinder implementation.

[0092] The present invention also relates to a key for the above-described locking system, the key being configured to switch at least one tumbler to a release configuration when fully inserted into the key slot, and the key having a coding protrusion that can push a verification pin to a verification position when the key is fully inserted into the key slot.

[0093] In some embodiments, the coding protrusion may be arranged, particularly circumferentially, in an axial groove extending from the key tip, and the coding protrusion is particularly arranged on the key-wide side of the key.

[0094] In some implementations, the coding protrusion has a recess on the verification surface facing the verification pin, into which the verification pin is inserted. The verification surface is the surface of the coding protrusion facing the verification pin when the key is inserted into the key slot. As previously mentioned, additional coding of the matching key can be achieved by adjusting the depth of the recess.

[0095] In some embodiments, the key is a double-sided reversible key with an elongated key bar and two opposing wide sides and two opposing narrow sides. The two wide sides have grooves, and each groove contains a coded protrusion. In this regard, the key can be configured to be structurally symmetrical after rotating 180° about the lock cylinder's rotation axis, with the lock cylinder's rotation axis coinciding with the key's longitudinal axis.

[0096] The key may also have one or more features mentioned in the above-described lock cylinder to be operated or in the above-described lock system implementation.

[0097] Furthermore, the present invention also relates to the application of the aforementioned key in operating the aforementioned lock cylinder, wherein the key specifically has a coding protrusion that, when the key is fully inserted into the key slot, can push the verification pin to the verification position. Attached Figure Description

[0098] The present invention will now be described in detail by way of example with reference to the accompanying drawings and embodiments, in which: Figure 1 This is an exploded view of a first embodiment of a locking system, which includes a lock cylinder and a matching key, but the lock cylinder housing is not shown. Figure 2 A floor plan for the matching key; Figures 3A to 3C Two perspective views of the key and the coding element of the lock cylinder coding device together, and a longitudinal sectional view of the lock cylinder with the key inserted, are used to illustrate the cooperation between the key and the lock cylinder coding device; Figure 4 An exploded view of another embodiment of the locking system, in which the lock cylinder housing is still not shown; Figure 5A and Figure 5B These are two cross-sectional views of the lock cylinder, used to illustrate the cooperation between the coding protrusion of the matching key and the locking device of the lock cylinder; Figure 6A and Figure 6B Two longitudinal sectional views of the lock cylinder body with the key inserted are provided to further illustrate the cooperation between the coding protrusion and the locking device. Figure 6B The embodiment shown also includes a mounting sleeve for pre-assembling the components of the locking device; Figure 7A and Figure 7B Two longitudinal sectional views of another embodiment of the lock cylinder and its locking device, wherein the mating key and the locking device are formed in the recess of the key's coding protrusion; and Figure 8A and Figure 8B Two exploded perspective views of the lock cylinder body, representing another embodiment of the lock cylinder. Detailed Implementation

[0099] Figure 1 An exploded view of a locking system 123 is shown, which includes a lock cylinder 11 and a matching key 23 for operating the lock cylinder 11. Regarding the lock cylinder 11, Figure 1 Only the lock cylinder core 19 is shown. The lock cylinder core includes two lock cylinder core halves 65 and 67. When the lock cylinder 11 is assembled, the lock cylinder core 19 can rotate about the lock cylinder rotation axis D in the core receiving section 15 of the lock cylinder housing 13 (not shown) between the closed position G and the open position O (see [reference]). Figure 5A and Figure 5B Such lock cylinder housing 13 is well known to those skilled in the art, and its exemplary structure is as follows: Figure 5A and Figure 5B As shown, the lock cylinder housing 13 has a cylinder receiving section 15 for accommodating the lock cylinder core 19, and a flange section 17 extending radially outward from the cylinder receiving section 15, thereby configuring the corresponding lock cylinder 11 as a profile lock cylinder. Furthermore, the lock cylinder 11 may have tumblers (not shown) to prevent the lock cylinder core 19 from rotating relative to the cylinder receiving section 15 of the lock cylinder housing 13, unless the matching key 23 is fully inserted into the key groove 21 formed on the lock cylinder core 19 via the key insertion opening 25 along the key insertion direction E coinciding with the longitudinal axis L of the matching key 23.

[0100] For example, the tumblers of such a lock cylinder 11 can be constructed as pin-type tumblers, which include a housing pin arranged in the flange section 17 and pre-tensioned to the lock cylinder body 19 by a tumbler spring. When the key 23 is not inserted into the key slot 21, the housing pin can be inserted into the through hole 37 of the lock cylinder body 19. The pin-type tumbler also includes a core pin arranged in the lock cylinder body 19. When the matching key 23 is fully inserted into the key slot 21, the corresponding conversion mechanism of the key can push the core pin outward, thereby converting the tumbler to the release configuration and pushing the housing pin against its pre-tension into the flange section 17, so that the tumbler unlocks the lock cylinder body 19 and can rotate to the open position O. Such configurations of pin-type tumblers are well known to those skilled in the art, and therefore will not be described in detail herein.

[0101] In addition, from Figure 5A and Figure 5B As can be clearly seen, the key slot 21 has an elongated cross-section, with two opposing wide sides 27 and 29 and two opposing narrow sides 31 and 33. Correspondingly, the key bar 127 of the matching key 23 is also elongated, with two opposing wide sides 115 and 117 and two opposing narrow sides 119 and 121, allowing the key 23 to be inserted into the key slot 21. In particular, the narrow sides 31 and 33 are oriented perpendicular to the wide sides 27 and 29, and the narrow sides 119 and 121 are oriented perpendicular to the wide sides 115 and 117.

[0102] although Figure 5A and Figure 5B Only an exemplary embodiment of the lock cylinder 11 of the present invention is shown, but all lock cylinders 11 disclosed in this invention, in principle, include a lock cylinder housing 13 and a lock cylinder core 19 having an elongated keyway 21, the lock cylinder housing having a core receiving section 15 for rotatably supporting the lock cylinder core 19. However, embodiments of the lock cylinder 11 not being configured as a profile lock cylinder, but rather as, for example, a circular or elliptical lock cylinder, are equally feasible.

[0103] To enable more coding possibilities for lock cylinder 11 based on the pin tumbler, Figure 1 In the lock cylinder 11 of the lock system 123 shown, an encoding device 39 is arranged at the end section 55 of the lock cylinder body 19. The encoding device 39 exemplarily includes two encoding elements 56, each configured as a corresponding small piece 57, which can be inserted from the outside of the lock cylinder body 19 through a receiving opening 61 into the receiving portion 59 of the lock cylinder body 19. One encoding element 56 forms a first axial boss 41, and the other encoding element 56 forms a second axial boss 43 for mating with a key 23, wherein, as... Figure 3C As shown in the longitudinal sectional view, when the coding element 56 is inserted into the receiving portion 59, the two axial bosses 41 and 43 are embedded in the key slot 21. In addition, the second axial boss 43 is offset relative to the first axial boss 41 in the key insertion direction E towards the axial end of the lock cylinder 19 away from the key insertion opening 25.

[0104] Figure 1 The first axial boss 41 is also shown to have a channel 45, which is defined by two lateral boundaries 47, through which an encoding protrusion 125 formed on the mating key 23 can pass during insertion of the key 23 into the key slot 21. On the other hand, a second axial boss 43 forms an axial boss for the encoding protrusion 125, such that when the mating key 23 is fully inserted into the key slot 21, the encoding protrusion 125 contacts the second axial boss 43 (see also [details omitted]). Figure 3C ).

[0105] from Figure 2 As can be clearly seen, the coding protrusion 125 of the matching key 23 is formed in the groove 51, which extends axially from the key tip 91 along the longitudinal axis A of the matching key 23. Furthermore, the coding protrusion 125 is circumferentially disposed within the axial groove 51, thus the coding protrusion is a partial protrusion within the groove 51, and its exemplary shape is a frustum. The groove depth between the coding protrusion 125 and the groove 51 at the rear boundary 93 opposite to the key tip is consistent with the groove depth between the coding protrusion 125 and the key tip 91. Moreover, the key 23 is specifically configured as a double-sided reversible key, whose structure is symmetrical after rotating 180° about its own longitudinal axis A. Therefore, in Figure 2The key width side 117, which is not shown in the diagram and is opposite to the key width side 115, also has a groove 51, and a correspondingly designed coding protrusion 125 is provided in the groove. This design allows the key 23 to be inserted into the key slot 21 in any orientation around the rotation axis, thereby enabling the operation of the lock cylinder 11.

[0106] Figure 3A and Figure 3B As shown, the outer boundary 47 of the channel 45 forms the inner guide portion of the groove 51, so that during the insertion of the key 23 into the key slot 21, the key can be aligned and guided by the engagement of the inner side of the groove 51 with the outer boundary 47 of the channel 45 of the first axial boss 41. In particular, the outer boundary 47 of the first axial boss 41, facing the end face 49 of the key insertion opening 25, forms a boss for the groove 51 facing away from the rear boundary 93 of the key tip 91, so that when the key 23 is fully inserted into the key slot 21, the coding protrusion 125 contacts the second axial boss 43, and the rear boundary 93 of the groove 51 contacts the first axial boss (see also...). Figure 3B and Figure 3C ).

[0107] This configuration of the lock cylinder 11 and its core 19 enables lock cylinder coding beyond the pins via the coding device 39. For example, the axial position of the coding protrusion 125 on the matching key 23, or its axial position in the groove 51, can be verified by the positioning of the second axial boss 43. For instance, if the axial position of the coding protrusion 125 is too close to the key tip 91, the coding protrusion 125 will abut against the second axial boss 43 before the key 23 is fully inserted into the key slot 21. Therefore, even if the key can switch the pins, it cannot operate the lock cylinder core 19.

[0108] Furthermore, the width of the coding protrusion 125 and its lateral positioning in the key insertion direction E can be verified through the channel 45 formed by the first axial protrusion 41. This is because, for example, if the width of the coding protrusion 125 is too large or its lateral positioning is deviated, it cannot pass through the channel 45 and will directly abut against the first axial protrusion 41, causing the corresponding key to be unable to be fully inserted into the key slot 21.

[0109] also, Figure 1 , Figure 3A and Figure 3BThe channel 45 in this embodiment is arched, and the two lateral boundaries 47 are connected to each other by a connecting section 53 on the side away from the key slot 21. Therefore, the channel 45 can also verify the height of the coding protrusion 125, which is the dimension of the coding protrusion 125 extending perpendicularly to the plane of the key bar 127 from the bottom of the groove 51. If the height of the coding protrusion 125 is too high, it will directly abut against the first axial boss 41, so even if the key can change the tumbler, it cannot operate the lock cylinder 19. In addition, since the first axial boss 41 is embedded in the key slot 21, the coding protrusion 125 must be formed in the matching groove 51. This is because if the key tip 91 is only configured as a protrusion or the width of the groove is too small, the key tip 91 of the key 23 will abut against the first axial boss 41.

[0110] Furthermore, since the encoding device 39 has a configuration of two offset axial bosses, the distance between the encoding protrusion 125 and the rear boundary 93 of the groove 51 can be verified. This is because, for example, if the distance between the encoding protrusion 125 and the rear boundary 93 is too small, the rear boundary 93 of the groove 51 will abut against the first axial boss 41 before the encoding protrusion 125 reaches the second axial boss 43, which would prevent the corresponding key 43 from being fully inserted into the key slot 21.

[0111] In summary, the coding device 39 can achieve multiple coding of the lock cylinder 11 in various ways, especially enhancing the anti-counterfeiting capability of the matching key 23. Specifically, it includes: changing the axial length of the coding element 56 or small piece 57 forming the first axial boss 41 to verify the distance between the coding protrusion 125 and the rear boundary 93 of the groove 51; changing the lateral positioning of the channel 45 (to verify the lateral position of the coding protrusion 125); changing the width of the channel (to verify the width of the coding protrusion 125); changing the axial position of the second axial boss 43 (to verify the axial position of the coding protrusion 125); changing the height of the channel (to verify the height of the coding protrusion 125); and / or changing the width of the first axial boss 41 and / or the second axial boss (to verify the width of the groove 51).

[0112] Figure 3C It is also shown that when the coding element 56 is inserted into the receiving portion 59, its outer side is flush with the outer side of the lock cylinder body 19, wherein, from Figure 1 As can be seen, the coding element 56 has a curvature on the outside that matches the curvature of the lock cylinder core 19, so that by inserting the coding element 56, the lock cylinder core 19 is assembled and can be rotatably accommodated in the core receiving section 15 of the lock cylinder housing 13.

[0113] Figure 4 Another embodiment of the lock system 123 is shown, the lock system including a lock cylinder 11, wherein the basic structure of the lock cylinder housing 13 is as follows: Figure 5A and Figure 5B As shown in the figure, it is still not shown in this figure. In this embodiment, the encoding device 39 is also arranged in the end section 55 of the lock cylinder body 19 of the lock cylinder 11, and includes a first axial boss 41 and a second axial boss 43. Figures 1 to 3C The same implementation method is used. The first axial boss 41 has a channel 45 through which the coding protrusion 125 of the matching key 23 passes. Therefore, the fully inserted key 23 can abut against the second axial boss 43 through its coding protrusion 125, and abut against the first axial boss 41 through the rear boundary 93 of the groove 51 where its coding protrusion 125 is located.

[0114] The encoding device 39 and its encoding element 56 can be inserted into the receiving portion 59 of the first lock cylinder half 65 of the lock cylinder body 19, while Figure 4 In the illustrated embodiment, a locking device 75 is further provided on the second lock cylinder half 67 of the lock cylinder body 19. The locking device 75 includes a verification pin 77, which is pre-tensioned by a spring 79 to the key slot 21 and embedded therein. Additionally, a locking pin 83 is provided, which is pre-tensioned outward by a spring 85, i.e., to the lock cylinder housing 13, and can enter the locked position S under this pre-tension. In the locked position, the locking pin 83 prevents the lock cylinder body 19 from rotating to the open position O. This will be discussed in conjunction with... Figure 5A and Figure 5B The working principle of the locking device 75 is explained in detail.

[0115] Figure 5A The lock cylinder 19 is shown in the closed position G, where the matching key 23 can be inserted into or removed from the key slot 21. However, if... Figure 5A As shown, at this time, the key 23 is not inserted into the key slot 21, and the verification pin 77 is embedded in the key slot 21 under pre-tension, which is provided by the spring 79 supported on the edge 81 of the lock cylinder body 19. In addition, the locking pin 83 is pre-tensioned by the spring 85 supported on the edge 87 of the lock cylinder body 19, and is in the above-mentioned locking position S under this pre-tension, in which the locking pin 83 is embedded in the locking recess 97 formed in the core receiving section 15 of the lock cylinder housing 13.

[0116] To open a lock equipped with this lock cylinder 11, the lock cylinder body 19 must be removed from... Figure 5AThe closed position G is rotated 90° to the open position O. Specifically, after inserting the matching key 23 and switching the pins to the release configuration, the lock cylinder body 19 is rotated to the open position O along the rotation direction D1. However, the locking device 75 incorporates an additional coding system. Only a key 23 that simultaneously meets two conditions can rotate the lock cylinder body 19 to the open position O: firstly, it can switch the pins to the release configuration; secondly, it has a coding protrusion 125 configured to cooperate with the locking device 75.

[0117] like Figure 5B As shown, after inserting the matching key 23 into the key slot 21, the coding protrusion 125 can push the verification pin 77 outward against the preload generated by the spring 79 to the verification position A. The verification pin 77 also has a permanent magnet 95 at the end section 107 facing the locking pin 83, but combined with Figure 5A It is understood that simply inserting the matching key 23 will not cause the permanent magnet 95 to form direct mechanical contact with the locking pin 83. Therefore, in this embodiment, even if the matching key 23 is inserted into the key slot 21, the locking pin 83 will remain in the locked position S.

[0118] However, a verification profile 99 is also formed on the lock cylinder housing 13, so even if the locking pin 83 is in the locked position S, the lock cylinder body 19 can still rotate from the closed position G to the verification rotation position C along the rotation direction D1. During the rotation of the lock cylinder body 19, the locking pin 83 is guided along the verification ramp 103 to the verification section 101 of the verification profile 99, wherein the locking pin 83 in contact with the verification section 101 is no longer embedded in the lock cylinder housing 13. In other words, during the rotation of the lock cylinder body 19 from the closed position G to the verification rotation position C, the locking pin 83 is pushed back to the release position F against the preload of the spring 85, and as... Figure 5B As shown, when in the verification rotation position C, the locking pin 83 will make mechanical contact with the verification pin 77 in the verification position A and the permanent magnet 95 arranged at the end section 107 of the verification pin.

[0119] According to this embodiment, the strength of the permanent magnet 95 is selected to ensure that when the verification pin 77 is in the verification position A, the permanent magnet 95 can resist the pre-tightening of the locking pin 83 and hold it in the release position F. Therefore, if the coding protrusion 125 of the key 23 is matched and formed, it can push the verification pin 77 into the verification position A, and the permanent magnet 95 forms a magnetic engagement connection with the locking pin 83, then the lock cylinder 19 can be released from the lock. Figure 5B The verification rotation position C shown continues to rotate to the open position O.

[0120] To ensure that the locking pin 83 is securely held in the released position F, according to this embodiment, the width of the verification pin 77 is configured to be greater than that of the locking pin 83, and the verification pin 77 contacts the retaining edge facing the locking pin 83 within the lock cylinder body 19. Therefore, even when the verification pin 77 is in the verification position A, the locking pin 83 cannot resist its preload to pull the verification pin 77 further outward and embed it into the lock cylinder housing 13. Furthermore, the attractive force exerted by the permanent magnet 95 on the locking pin 83 must be greater than the preload exerted by the spring 85 on the locking pin 83 to ensure that the locking pin 83 is held in the released position F. However, this attractive force must be less than the sum of the preload exerted by the spring 85 on the locking pin 83 and the preload exerted by the spring 79 on the verification pin 77, so that when the lock cylinder body 19 rotates back to the closed position G and the matching key 23 is removed from the key slot 21, the verification pin 77 and the locking pin 83 can disengage.

[0121] In particular, the locking device 75 includes a verification pin 77 and a locking pin 83, the arrangement of which also enables more coding possibilities for the lock cylinder 11. For example, from Figure 5B As can be seen, regardless of whether the verification pin 77 is in verification position A or whether the inserted key has a highly matched coding protrusion 125, when the lock cylinder body 19 rotates to the verification rotation position C, the locking pin 83 will enter the release position F. However, if the verification pin 77 is not in verification position A, the locking pin 83 cannot be stably held in the release position F. When the lock cylinder body 19 continues to rotate towards the open position O, the locking pin 83 will be pre-tightened and embedded in the locking receiving part 109 when the lock cylinder body 19 reaches the locking rotation position B. The locking receiving part 109 is formed on the lock cylinder housing 13 and has a locking boss 111. When the lock cylinder body 19 reaches the locking rotation position B, the locking pin 83 embedded in the locking receiving part 109 will abut against the locking boss 111. It is this abutting and blocking lock cylinder 19 that continues to rotate toward the open position O, unless the verification pin 77 has been pushed into the verification position A in advance, and the locking pin 83 is received by the verification pin 77 and held in the release position F when passing the verification rotation position C.

[0122] Therefore, to rotate the lock cylinder 19 to the open position O, a matching key 23 with a matching coded protrusion 125 must be inserted into the key slot 21. The locking receiving portion 109 is connected to a return ramp 105 in the rotation direction D2, opposite to the rotation direction D1. Therefore, even if the verification pin 77 is not in the verification position A, the lock cylinder 19 can still be rotated from the locking rotation position B back to the closed position G, facilitating the removal of any mismatched keys that may have been mistakenly inserted. Furthermore, the present invention can typically be configured such that the lock cylinder 19 must first be rotated along the rotation direction D2, opposite to the rotation direction D1, to rotate the locking pin 83 to the release position F and be received by the verification pin 77, and then the lock cylinder 19 can be rotated to the open position O along the rotation direction D1. In this type of implementation, a locking boss that cooperates with the locking pin 83 can also be directly provided in the locking recess 97. Therefore, the lock cylinder 19 needs to rotate from the closed position G to the verification rotation position C along the second rotation direction D2 before it can rotate from the closed position G to the open position O along the rotation direction D1, provided that the locking pin 83 is kept in the release position F.

[0123] The engagement of the verification pin 77 with the coding protrusion 125 specifically enables verification of the height and positioning of the coding protrusion 125. The lock cylinder 19 can only be operated when a matching coding protrusion 125 is positioned on the key bar 127 and can contact the verification pin 77. Furthermore, the matching key 23 is configured as a double-sided reversible key. After rotating 180° around its longitudinal axis A, regardless of its orientation when inserted into the key slot 21, one coding protrusion 125 will always engage with the verification pin 77 of the locking device 75, while the other coding protrusion 125 can engage with, for example... Figure 4 The encoding device 39 shown is used in conjunction with it.

[0124] Figure 6A Again, in the form of a longitudinal sectional view, the engagement of the coding protrusion 125 with the verification pin 77 is shown so that the coding protrusion 125 pushes the verification pin 77 into the verification position A, thereby allowing the locking pin 83 to remain in the release position F.

[0125] Figure 6B The illustrated embodiment also includes an assembly sleeve 89, in which the components of the locking device 75 can be pre-assembled. Specifically, the verification pin 77, spring 79, locking pin 83, and spring 85 can be first installed outside the lock cylinder body 19 into the assembly sleeve 89, and then the entire locking device 75, as a pre-assembled component, can be inserted into the assembly receiving portion 113 of the lock cylinder body 19 in a single assembly step. The assembly sleeve 89 may also have the aforementioned edges 81 and 87 at corresponding positions to provide support for the springs 79 and 85.

[0126] Figure 7A and Figure 7BAn embodiment is also shown in which the locking device 75 requires an additional code forming a recess 129 on the coding protrusion 125 of the matching key 23 to keep the locking pin 83 in the released position F. Figure 7A The key 23 inserted into the key slot 21 has a coding protrusion 125 whose maximum height matches the requirements, but it lacks a recess 129. This causes the verification pin 77, whose end is pointed, to be pushed by the coding protrusion 125 to a position other than verification position A. The locking pin 83 then extends out of the lock cylinder body 19 and embeds into the lock cylinder housing 13 (not shown), ultimately locking the lock cylinder body 19 to rotate to the open position O. In other words, although the coding protrusion 125 of the key 23 can be adapted... Figure 6A or Figure 6B The lock cylinder in the illustrated embodiment, when the verification pin 77 is precisely pushed into verification position A, cannot be operated. Figure 7A The lock cylinder 11 shown.

[0127] on the other hand, Figure 7B The configuration of a key 23 that matches the lock cylinder core 19 or lock cylinder 11 is shown. Its coding protrusion 125 has the aforementioned recess 129, into which the verification pin 77 can be inserted, thereby matchingly positioned in verification position A, ensuring that the lock stop pin 83 is securely held in release position F. In particular, in this embodiment, the strength of the permanent magnet 95 can be specifically designed so that it can resist the pre-tightening of the lock stop pin 83 and pull the lock stop pin 83 inward at least a short distance until it reaches release position F. However, it is also possible to first move the lock stop pin 83 toward the verification pin 77 via the verification contour 99 so that the verification pin 77 and its permanent magnet 95 receive the lock stop pin 83. Furthermore, in this embodiment, it is also generally possible to push the lock stop pin 83 via the verification contour 99, so that it forms direct mechanical contact with the verification pin 77 in verification position A.

[0128] also, Figure 7B In the illustrated embodiment, the preload of the verification pin 77 can also be set to be greater than the preload of the locking pin 83 to prevent the preload of the locking pin 83 from pulling the verification pin 77 out of the verification position A. Simultaneously, the attractive force exerted by the permanent magnet 95 on the locking pin 83 must still be less than the sum of the preloads of the locking pin 83 and the verification pin 77, to ensure that the locking pin 83 and the verification pin 77 can disengage after the key 23 is removed.

[0129] Figure 8A and Figure 8B Another embodiment of the lock cylinder 11 is shown, which also has a locking device 75 and a coding device 39. Similar to the aforementioned... Figures 1 to 4 Unlike the encoding device 39 described in the previous embodiment, the encoding device 39 in this embodiment only includes one encoding element 63, which is directly molded on the lock cylinder core half 67, for example, it can be formed in the zinc die-casting process of manufacturing the lock cylinder core half 65 and 67.

[0130] The coding element 63 is configured in the form of a fork 69, having two extensions 71 extending axially toward the key insertion opening 25 of the key slot 21. The two extensions 71 form a first axial boss 41, and define a channel 45 between them for the coding protrusion 125 of the matching key 23 to pass through. The two extensions 71 are interconnected by a receiving section 73, which forms a boss for the coding protrusion 125. Furthermore, the coding element 63 is directly disposed on the base 131 of the lock cylinder half 67 and the key slot 21, so that the height of the coding element 63, and especially its extensions 71, can also verify the height of the coding protrusion 125. Similarly, when the matching key 23 is configured as a double-sided reversible key, one coding protrusion 125 can cooperate with the coding element 63 of the coding device 39, while the other coding protrusion 125 can push the verification pin 77 of the locking device 75 to the verification position A, thereby holding the locking pin 83 in the release position F.

[0131] List of reference numerals

[0132] 11 Lock cylinder

[0133] 13 Lock cylinder housing

[0134] 15 Core housing section

[0135] 17 Flange Section

[0136] 19. Lock core

[0137] 21 Key slot

[0138] 23 keys

[0139] 25. Key inserted into the opening.

[0140] 27. Key slot wide side

[0141] 29. Key slot width side

[0142] 31 Narrow side of keyway

[0143] 33 Narrow side of keyway

[0144] 37 Through Hole

[0145] 39 Encoding device

[0146] 41 First Axial Boss

[0147] 43 Second Axial Boss

[0148] 45 channels

[0149] 47 Lateral Boundary

[0150] 49 End face

[0151] 51 Groove

[0152] 53 Connecting Section

[0153] 55 End Section

[0154] 56 coding elements

[0155] 57 small pieces

[0156] 59. Accommodation Department

[0157] 61 Accommodation opening

[0158] 63 Encoding Elements

[0159] 65 Lock cylinder half body

[0160] 67 Lock cylinder half-body

[0161] 69 Fork-shaped component

[0162] 71 Extension

[0163] 73. Accommodation Section

[0164] 75 Locking device

[0165] 77 Verification and cancellation

[0166] 79 Springs

[0167] 81 Edge

[0168] 83 Locking pin

[0169] 85 Spring

[0170] 87 Edge

[0171] 89. Matching cylinder

[0172] 91 Key Tip

[0173] 93. The rear boundary of the groove

[0174] 95 permanent magnet

[0175] 97 Locking recess

[0176] 99 Verification Outline

[0177] 101 Verification Section

[0178] 103 Verification Slope

[0179] 105 Return to the slope

[0180] 107 Verification pin end section

[0181] 109 Locking Receiving Section

[0182] 111 Locking boss

[0183] 113 Assembly and housing section

[0184] 115 Key Wide Side

[0185] 117 Key Wide Side

[0186] 119 Narrow side of the key

[0187] 121 Key Narrow Side

[0188] 123 Locking System

[0189] 125 Coded Raised

[0190] 127 Key Bar

[0191] 129 recess

[0192] 131 matrix

[0193] A Verification Location

[0194] B Locking Rotation Position

[0195] C. Verify rotation position

[0196] D Lock cylinder rotation axis

[0197] D1 Rotation direction

[0198] D2 Rotation Direction

[0199] E Key insertion direction

[0200] F Release Position

[0201] G Closed position

[0202] L longitudinal axis

[0203] O Open position

[0204] S Lock position.

Claims

1. A lock cylinder (11), comprising: - Lock cylinder housing (13) having a core receiving section (15); - Lock cylinder core (19), the lock cylinder core (19) being rotatably supported in the core receiving section (15) between a closed position (G) and an open position (O) about the lock cylinder rotation axis (D), and the lock cylinder core having a key slot (21) extending along the lock cylinder rotation axis (D), and a matching key (23) being able to be inserted into the key slot (21) through a key insertion opening (25) in the key insertion direction (E), wherein the key slot (21) is provided with an elongated cross section having two opposing key slot wide sides (27, 29) and two opposing key slot (21) narrow sides; - At least one pin (35), said at least one pin (35) being configured to: lock the lock cylinder body (19) in the closed position (G) when the key (23) is not inserted into the key slot (21), preventing the lock cylinder body (19) from rotating to the open position (O), wherein, by inserting the matching key (23), said at least one pin (35) can be switched to a release configuration, in which said at least one pin (35) releases the lock cylinder body (19), causing the lock cylinder body (19) to rotate relative to the lock cylinder housing (13); and - Locking device (75), the locking device (75) having a verification pin (77) pre-tightened to the key slot (21) and embedded in the key slot (21) and a locking pin (83) arranged aligned with the verification pin (77). The locking pin (83) is pre-tightened outward relative to the rotation axis (D) of the lock cylinder to the locked position (S), and the locking pin (83) is configured to prevent the lock cylinder body (19) from rotating to the open position (O) in the locked position (S). Specifically, by fully inserting the matching key (23) into the key slot (21), the verification pin (77) can be pushed into the verification position (A). Wherein, the verification pin (77) has a permanent magnet (95) at the end segment (107) facing the locking pin (83), and / or wherein the locking pin (83) has a permanent magnet (95) at the end segment facing the verification pin (77), and The permanent magnet (95) is configured such that when the verification pin (77) is pushed to the verification position (A), it holds the locking pin (83) in the release position (F) against the pre-tightening of the locking pin (83), in the release position (F), the locking pin (83) releases the lock cylinder (19) and causes the lock cylinder (19) to rotate to the open position (O).

2. The lock cylinder (11) according to claim 1. in, In the closed position (G) of the lock cylinder body (19), the locking pin (83) is embedded in the locking recess (97) formed on the lock cylinder housing (13).

3. The lock cylinder (11) according to claim 1 or 2. in, The verification pin (77) is embedded in the key slot (21) at one of the key slot wide sides (27, 29).

4. The lock cylinder (11) according to any one of the preceding claims. in, The verification pin (77) is more pre-tightened than the locking pin (83).

5. The lock cylinder (11) according to any one of the preceding claims. in, The lock cylinder housing (13) has a verification profile (99), wherein, by rotating the lock cylinder body (19) from the closed position (G) to the verification rotation position (C), the locking pin (83) is movable along the verification profile (99) toward the verification pin (77), particularly being able to be pushed into the release position (F), and wherein, when the verification pin (77) is in the verification position (A), when the lock cylinder body (19) reaches the verification rotation position (C), the locking pin (83) and / or the verification pin (77) are able to form effective contact with the permanent magnet (95).

6. The lock cylinder (11) according to claim 5. in, The verification profile (99) has a verification ramp (103) during rotation of the lock cylinder (19), during which the locking pin (83) can be guided along the verification ramp (103) from the closed position (G) to the verification position (A).

7. The lock cylinder (11) according to claim 5 or 6. in, The verification profile (99) has a verification section (101) that extends at least to the outside of the lock cylinder (19), wherein, in the verification rotation position (C), the lock stop (83) contacts the verification section (101).

8. The lock cylinder according to any one of claims 5 to 7, in, When the verification pin (77) is not in the verification position (A), the lock cylinder (19) can rotate from the verification rotation position (C) to the open position (O) until it enters the locking rotation position (B). The locking pin (83) is configured such that when the verification pin (77) is not in the verification position (A), by rotating the lock cylinder (19) from the verification rotation position (C) to the locking rotation position (B), the locking pin (83) is pre-tightened and engages with the locking receiving portion (109) of the verification profile (99). The locking receiving portion (109) has a locking boss (111) for the locking pin (83). When the lock cylinder (19) reaches the locking rotation position (B), the locking pin (83) embedded in the locking receiving portion (109) abuts against the locking boss (111).

9. The lock cylinder (11) according to claim 8. in, When the verification pin (77) is not in the verification position (A), the lock core (19) can rotate from the locking rotation position (B) to the closed position (G).

10. The lock cylinder (11) according to claim 8 or 9. in, The verification profile (99) has a return ramp (105) so that when the lock cylinder (19) rotates from the locking rotation position (B) to the closed position (G), the locking pin (83) can be guided out of the locking receiving portion (109) along the return ramp (105).

11. The lock cylinder according to any one of claims 5 to 10, in, The lock cylinder (19) can be rotated from the closed position (G) to the open position (O) via the verification rotation position (C), or wherein the lock cylinder (19) can be rotated from the closed position (G) to the verification rotation position (C) along a first rotation direction (D2), and can be rotated from the verification rotation position (C) to the open position (O) along a second rotation direction (D1) opposite to the first rotation direction (D2).

12. The lock cylinder (11) according to any one of the preceding claims. in, The permanent magnet (95) is configured such that when the verification pin (77) is in the verification position (A), the permanent magnet (95) pulls the locking pin (83) to the release position (F) against the pre-tightening of the locking pin (83).

13. The lock cylinder (11) according to any one of the preceding claims. in, In the closed position (G), the matching key (23) can be inserted into the key slot (21) and can be pulled out from the key slot (21).

14. The lock cylinder (11) according to any one of the preceding claims. in, The verification pin (77) and the locking pin (83), as well as their respective preload elements for generating their respective preloads, particularly their respective springs (79, 85), can be pre-assembled in the mounting sleeve (89), wherein the lock cylinder body (19) has a mounting receiving portion (113) into which the mounting sleeve (89) can be inserted.

15. The lock cylinder (11) according to any one of the preceding claims. in, The verification pin (77) can be pushed into the verification position (A) by a coding protrusion (125) provided in an axial groove (51) extending from the key tip (91).

16. The lock cylinder (11) according to any one of the preceding claims. in, The lock cylinder (11) also has an encoding device (39) having a first axial boss (41) and a second axial boss (43) for the key (23), wherein the first axial boss (41) and the second axial boss (43) are embedded in the key slot (21), and wherein the second axial boss (43) is offset along the key insertion direction (E) relative to the first axial boss (41) towards the axial end of the lock cylinder body (19) away from the key insertion opening (25). The first axial boss (41) has a channel (45) for allowing the coding protrusion (125) formed on the matching key (23) to pass through, and the second axial boss (43) forms a boss for the coding protrusion (125).

17. The lock cylinder (11) according to claim 16. in, The encoding device (39) and the verification pin (77) are embedded in the key slot (21) at the opposite wide sides (27, 29) of the key slot.

18. The lock cylinder (11) according to claim 16 or 17. in, The encoding device (39) and the verification pin (77) are configured to engage with respective encoding protrusions (125) formed on the opposite key wide sides (115, 117) of the matching key (23).

19. The lock cylinder according to any one of claims 16 to 18, in, The channel (45) has two lateral boundaries (47) that are offset from each other laterally to the rotation axis (D) of the lock cylinder, and the coding protrusion (125) can be guided through the two lateral boundaries (47) when the key (23) is inserted into the key slot (21).

20. The lock cylinder (11) according to claim 19. in, The end face (49) of the boundary (47) facing the key insertion opening (25) forms the first axial boss (41).

21. The lock cylinder (11) according to claim 19 or 20. in, The outer surface of the boundary (47) facing away from the channel (45) forms an inner guide portion for forming a groove (51) on the matching key (23), and the coding protrusion (125) is formed in the groove (51).

22. The lock cylinder according to any one of claims 19 to 21, in, The channel (45) is arched, and the first axial boss has a connecting section (53) that connects the lateral boundaries (47) to each other on the side of the first axial boss (41) away from the key slot (21).

23. The lock cylinder according to any one of claims 16 to 22, in, The first axial boss (41) and the second axial boss (43) are formed at their respective coding elements (56) inserted into the lock core (19), and in particular on their respective small pieces (57).

24. The lock cylinder (11) according to claim 23. in, The lock core (19) has a receiving portion (59) for inserting the coding element (56).

25. The lock cylinder (11) according to claim 24. in, The receiving portion (59) has a receiving opening (61) on the outside of the lock cylinder core (19), through which the encoding element (56) can be inserted into the receiving portion, wherein the inserted encoding element (56) extends radially to the outside of the lock cylinder core (19) and has a curvature corresponding to the lock cylinder core (19) on the outside.

26. The lock cylinder according to any one of claims 16 to 22, in, The encoding device (39) has an integral encoding element (63), wherein the first axial boss (41) and the second axial boss (43) are formed on the integral encoding element (63).

27. The lock cylinder (11) according to claim 26. in, The encoding element (63) is molded on the lock cylinder body (19), and in particular, the lock cylinder body (19) includes two lock cylinder body halves (65, 67) (19), wherein the encoding element (63) is molded on one of the two lock cylinder body halves (65, 67) (19).

28. The lock cylinder (11) according to claim 26 or 27. in, The encoding element (63) is configured in the form of a fork (69) and has two extensions (71) that define the channel (45) and face the key insertion opening (25), and the encoding protrusion (125) is insertable into the fork between the two extensions (71), wherein the extensions (71) form the first axial boss (41), and wherein a receiving section (73) connecting the two extensions (71) on the side of the fork (69) opposite to the key insertion opening (25) forms the second axial boss (43).

29. A locking system (123) comprising a lock cylinder (11) according to any one of the preceding claims and a matching key.

30. The lock system (123) according to claim 29. in, The matching key (23) has an axial groove (51) starting from the key tip (91), and a coding protrusion (125) is arranged in the groove (51), wherein the coding protrusion (125) is configured such that when the key (23) is fully inserted into the key slot (21), the coding protrusion (125) pushes the verification pin (77) into the verification position (A).

31. The lock system (123) according to claim 30. in, The coding protrusion (125) is formed circumferentially in the groove (51).

32. The locking system (123) according to claim 30 or 31. in, The coding protrusion (125) has a recess (129) on the verification surface facing the verification pin (77), the recess (129) being used to engage with the verification pin (77) when the key (23) is inserted into the key slot (21).

33. The lock system (123) according to any one of claims 30 to 32. in, The matching key (23) is configured as a double-sided reversible key, the double-sided reversible key having an elongated key bar (127), and the double-sided reversible key having two opposing key wide sides (115, 117) and two opposing key narrow sides (119, 121), wherein the key (23) has a respective groove (51) at each of the key wide sides (115, 117), and a coding protrusion (125) is arranged in the groove (51).

34. The lock system (123) according to claim 33. in, The lock cylinder (11) also has an encoding device (39) having a first axial boss (41) and a second axial boss (43) for the key (23), wherein the first axial boss (41) and the second axial boss (43) are embedded in the key slot (21), and wherein the second axial boss (43) is offset along the key insertion direction (E) relative to the first axial boss (41) towards the axial end of the lock cylinder body (19) away from the key insertion opening (25). The first axial boss (41) has a channel (45) for allowing one of the two coding protrusions (125) to pass through, and the second axial boss (43) forms a boss for said coding protrusion (125). When one of the coding protrusions (125) contacts the second axial boss (43), the other coding protrusion of the two coding protrusions (125) of the matching key (23) is configured to push the verification pin (77) into the verification position (A).

35. A key for use in a locking system (123) according to any one of claims 29 to 34, in, The key (23) is configured to switch at least one pin (35) to a release configuration when fully inserted into the key slot (21), and wherein the key (23) has an encoding protrusion (125) configured to push a verification pin (77) to a verification position (A) when the key (23) is fully inserted into the key slot (21).

36. The key according to claim 35, in, The coding protrusion (125) is arranged circumferentially in a groove (51) in the axial direction starting from the key tip (91).

37. The key (33) according to claim 35 or 36. in, The coding protrusion (125) has a recess (129) on the verification surface facing the verification pin (77), the recess (129) being used to engage with the verification pin (77) when the key (23) is inserted into the key slot (21).

38. The method according to any one of claims 36 or 37, in, The matching key (23) is configured as a double-sided reversible key, the double-sided reversible key having an elongated key bar (127), and the double-sided reversible key having two opposing key wide sides (115, 117) and two opposing key narrow sides (119, 121), wherein the key (23) has a respective groove (51) at each of the key wide sides (115, 117), and a coding protrusion (125) is arranged in the groove (51).

Images