A merchandise security device is provided. The merchandise security device may include a lock mechanism operably engaged with a shape memory material configured to receive electrical power for locking and unlocking the lock mechanism. The shape memory material may be configured to change in shape in response to receiving electrical power to thereby lock or unlock the lock mechanism.

Provided are a lock cylinder and an unlocking key. The lock cylinder includes: a lock housing; a lock core, herein the lock core is rotatably arranged in the lock housing; a locking member, herein the locking member is movably arranged between the lock core and the lock housing and provided with a locking position and an unlocking position; a locking blade, herein the locking blade is movably connected to the lock core and capable of stopping or avoiding the movement of the locking member so as to lock or unlock the locking member; a driving assembly, herein at least part of the driving assembly is movably arranged relative to the locking member, and the driving assembly is capable of stopping or avoiding the movement of the locking member so as to lock or unlock the locking member.

A merchandise security device is provided. The merchandise security device may include a lock mechanism operably engaged with a shape memory material configured to receive electrical power for locking and unlocking the lock mechanism. The shape memory material may be configured to change in shape in response to receiving electrical power to thereby lock or unlock the lock mechanism.

Disclosed is an automatically resettable passive swing bolt lock consisting of a lock body and a key. The key can be inserted into a locking hole of the lock body. In the present invention, the lock body comprises a lock housing, a rotary compartment, a lock cover, a reset spring, a pin spring, a pin, a lock body PCB, a motor, a cam, a reset pusher block, and two locking contacts. In the lock body, the rotary compartment is installed inside the lock housing. The lock body PCB, the motor and the cam are installed in an internal cavity of the rotary compartment formed by the lock cover and the rotary compartment. The invention has a small size and a simple structure, and the motor thereof has low power consumption.

The invention discloses an accidental unlocking prevention electronic lock, in particular an accidental unlocking prevention electronic lock in the field of electronic locks. The accidental unlocking prevention electronic lock of the invention comprises a lock cylinder, a control circuit and a clutch sleeve, wherein the control circuit and a key hole are installed in the lock cylinder, and further comprises a transmission system, a power shaft, a clutch cam, a key cam, a key pin and a suspension, wherein the lock cylinder is internally provided with a clamping jaw, a torsion spring and a clamping jaw motor; one end of the clamping jaw is connected with an output shaft of the clamping jaw motor, one end of the torsion spring is fixed in the suspension and the other end thereof is connected with the clamping jaw; the key cam is provided with a limiting groove and the lock cylinder is provided with a limiting pin. The invention has the advantages of high safety and reliability, low power consumption, small volume and strong impact-resistant performance, and can be protected from accidental unlocking even under the conditions of high-speed impact and severe vibration.

A combination lock can be operated manually via the manipulation of dials and by way of an electronic key. The lock includes one or more rotatable selectors each having multiple indicia disposed thereon. Rotation of the rotatable selectors to predetermined indicia places the lock in the unlocked position. The lock can further include an electronic port and an actuator. Upon receipt of a predetermined credential via the port, the actuator can place the lock in in the unlocked position. The lock further includes a knob that, when the lock is in the unlocked position, can be rotated between a first position in which the lock is in a closed position and a second position in which the lock is in an open position. The combination lock may automatically scramble the positions of the dials upon opening for security purposes.

A lock (1) with an exterior activation sensor (2) includes an interior electromechanical mechanism (3) with a corresponding power supply unit (4) and an exterior activation sensor (2) situated on the external part of the locker, and which is used in community lockers or similar, wherein the exterior activation sensor (2) contains at least two respective internal electrical contacts (5) which, by means of a conductive circuit (6), reach the inside of the lock and connect in parallel to the interior poles of the circuit (4a) of the power supply unit (4).

Embodiments are directed to merchandise security devices, systems, and methods for protecting an item of merchandise from theft. For example, a merchandise security device may include a lock configured to be secured to a merchandise fixture and a strike plate configured to be secured to the merchandise fixture. The lock includes an actuator configured to extend into operable engagement with the strike plate in a locked state and to retract out of operable engagement with the strike plate in an unlocked state. In addition, the actuator includes a curved portion at its free end and a straight portion extending from the curved portion, and the strike plate is configured to receive the entire curved portion in the locked state.

A combination lock can be operated manually via the manipulation of dials and by way of an electronic key. The lock includes one or more rotatable selectors each having multiple indicia disposed thereon. Rotation of the rotatable selectors to predetermined indicia places the lock in the unlocked position. The lock can further include an electronic port and an actuator. Upon receipt of a predetermined credential via the port, the actuator can place the lock in in the unlocked position. The lock further includes a knob that, when the lock is in the unlocked position, can be rotated between a first position in which the lock is in a closed position and a second position in which the lock is in an open position. The combination lock may automatically scramble the positions of the dials upon opening for security purposes.

A combination lock can be operated manually via the manipulation of dials and by way of an electronic key. The lock includes one or more rotatable selectors each having multiple indicia disposed thereon. Rotation of the rotatable selectors to predetermined indicia places the lock in the unlocked position. The lock can further include an electronic port and an actuator. Upon receipt of a predetermined credential via the port, the actuator can place the lock in the unlocked position. The lock further includes a knob that, when the lock is in the unlocked position, can be rotated between a first position in which the lock is in a closed position and a second position in which the lock is in an open position. The combination lock may automatically scramble the positions of the dials upon opening for security purposes.