Electromechanical cylinder lock with rotary release

摘要

An electromechanical cylinder lock includes an outer lock shell and a rotatable lock barrel located therein which is controlled by dual locking features. A side bar or fence selectively blocks and permits rotation of the barrel with respect to the shell in response to insertion of a key into a keyway in the barrel. The barrel includes a plurality of electromechanical locking members with grooves formed therein, the locking members being movable to a position in which the grooves are aligned to accept the side bar or portions thereof. An electromagnetic core disposed in the barrel is energized in response to a control device which determines whether an attempt to open the lock is authorized, the magnetic core rotating the electromechanical locking members to a desired position relative to the side bar to allow rotation of the barrel. The locking members may be flat disc-shaped elements with a portion cut out to form a groove. As the electromagnetic core (or other electronically powered drive mechanism) and the locking members are substantially entirely contained in the barrel, mechanical cylinder locks may be retrofitted to form an electromechanical lock by removing and replacing the purely mechanical barrel with the electronically driven barrel.