Electronic locks can provide improved security over mechanical locks. Despite the improved security of electronic locks, there may be occasions where it is desirable to replace the electronic lock. Replacing an electronic lock can be expensive and challenging, particularly if the electronic lock is being replaced by a different electronic lock produced by a different manufacturer. The present disclosure relates to an electronic lock with a replaceable lock core that enables replacing the electronic lock core with a new electronic lock core without needing to replace the entire electronic lock. Further, through use of access controls managed by the electronic lock and electronic key combination, and the unique mechanical configurations disclosed herein, it is possible to replace an electronic lock core without compromising security of a device or location secured by the electronic lock.

Electronic locks can provide improved security over mechanical locks. Despite the improved security of electronic locks, there may be occasions where it is desirable to replace the electronic lock. Replacing an electronic lock can be expensive and challenging, particularly if the electronic lock is being replaced by a different electronic lock produced by a different manufacturer. The present disclosure relates to an electronic lock with a replaceable lock core that enables replacing the electronic lock core with a new electronic lock core without needing to replace the entire electronic lock. Further, through use of access controls managed by the electronic lock and electronic key combination, and the unique mechanical configurations disclosed herein, it is possible to replace an electronic lock core without compromising security of a device or location secured by the electronic lock.

A drawer lock assembly is provided including a housing having a front face and a rear face; a barrel having a first end extending perpendicularly from the front face of the housing and a second end extending through the rear face of the housing; a locking actuation member disposed through the first end of the barrel; a driver disposed through the second end of the barrel to engage the locking actuation member; a bolt including a first member offset from a second member in a parallel relationship, the first member includes a slot configured to receive a cam of the driver; and an endplate configured to retain the driver and bolt in the housing, the endplate including a channel configured to receive the second member of the bolt, wherein upon actuation of the locking actuation member, the second member extends beyond the housing to engage a recess of a structure.

An interchangeable cylinder lock core with a mechanism for transferring a torque to a lock unit when a key plug is rotated. The interchangeable cylinder lock core includes a shell having an upper part, provided with a central row of locking pins in associated cavities, and a lower part with a cylindrical bore accommodating the rotatable key plug. At least a part of the cylindrical bore extends through a rotatable retainer sleeve. A back region of the key plug has a minimum length with the adjoining front region of the key plug being located in front of the mechanism for transferring torque. The adjoining front region accommodates, in addition to the central row of locking pins, at least one side locking mechanism which is located in its entirety within the front region of the key plug and interacts with at least one recess in a fixed front end sleeve portion.

A system including a lock class having a plurality of lock families, with each lock family including a plurality of lock cylinders. Each of the lock families has a control pin location which is different from the control pin location of another of the lock families within the lock class. Each of the lock cylinders generally includes a shell, a plug rotatably mounted in the shell, and a control ring rotatably mounted on the plug at the control pin location of the lock family of which the lock cylinder is a member, and a control pin operable to selectively couple the plug with the control ring. Each lock family may be associated with a control key family. Each control key family may include a plurality of control keys, each of which may have a control bitting configured to urge control pins of the associated lock family to a coupling position.

A cylinder lock unit includes a housing having an upper part and a lower part that includes a cylindrical bore accommodating a rotatable key plug. A back region of the key plug has a minimum length of 50% of a total length of the key plug with an adjoining front region having a maximum length of 50% of the total length. The front region accommodates at least one side locking mechanism confined entirely within the front region of the key plug that includes a longitudinal row of at least two coded side locking tumblers each interacting with the lower part of the housing wherein each side locking mechanism is movable independently of each other with at least three different code positions for each coded side locking tumbler and a plurality of different code combinations for the at least two coded side locking tumblers in each of the longitudinal row.

An interchangeable electro-mechanical lock core for use with a lock device having a locked state and an unlocked state is disclosed. The interchangeable electro-mechanical lock core may include a moveable plug having a first position relative to a lock core body which corresponds to the lock device being in the locked state and a second position relative to a lock core body which corresponds to the lock device being in the unlocked state. The interchangeable electro-mechanical lock core may include a core keeper moveably coupled to a lock core body. The core keeper may be positionable in a retain position wherein the core keeper extends beyond an envelope of lock core body to hold the lock core body in an opening of the lock device and a remove position wherein the core keeper is retracted relative to retain position to permit removal.

An interchangeable cylinder lock core with a mechanism for transferring a torque to a lock unit when a key plug is rotated. The interchangeable cylinder lock core includes a shell having an upper part, provided with a central row of locking pins in associated cavities, and a lower part with a cylindrical bore accommodating the rotatable key plug. At least a part of the cylindrical bore extends through a rotatable retainer sleeve. A back region of the key plug has a minimum length with the adjoining front region of the key plug being located in front of the mechanism for transferring torque. The adjoining front region accommodates, in addition to the central row of locking pins, at least one side locking mechanism which is located in its entirety within the front region of the key plug and interacts with at least one recess in a fixed front end sleeve portion.

An interchangeable core assembly for a lock core assembly capable of being flush mounted in a door including a housing, a lock insert mounted in the housing, a lock core mounted in the housing adjacent to and cooperative with the lock insert, a thumb-turn assembly mounted in the non-cylindrical housing coaxial with the lock core, a first offset cam mounted on the thumb-turn assembly for rotation therewith, and a second offset cam mounted on the lock core for rotation therewith. The barrel of the lock core assembly is unobstructed by locking train components such that the lock core assembly extends completely through the latch assembly when installed therein. The lock core assembly is secured to the latch assembly without threads and a means to remove/replace the thumb-turn component is provided.

According to a first aspect of the invention, there is provided a tailpiece attaching arrangement (100) comprising a cylindrical frame (102), a cylindrical attaching member (104) and a locking member (106) wherein the cylindrical attaching member (104) is configured to attach the tailpiece (108) into the cylindrical frame (102), and the locking member (106) is configured to lock the attaching member (104). According to a second aspect of the invention, there is provided a lock arrangement (126) comprising the tailpiece attaching arrangement (100) and a lock cylinder (128).