A handle mechanism used for driving a lock module in operation includes a handle, a linking member and a transmission rod, wherein the linking member is selectively engaged with the handle and the transmission rod. The handle is unable to drive the lock module in operation by the transmission rod driving and prevents the lock module from damage once an excessive force is applied to the handle when the linking member is not engaged with the handle and the transmission rod. Oppositely, the handle is able to drive the lock module in operation by the transmission rod driving when the linking member is engaged with the handle and the transmission rod.

Electromechanical lock utilizing magnetic field forces. An actuator is moved between a locked position and an unlocked position. In the locked position, a first permanent magnet directs a first magnetic field exerting a pushing force so that rotation of the first axle is blocked, and a second permanent magnet directs a second magnetic field exerting a pulling force so that the first axle is kept uncoupled with the second axle. In the unlocked position, the first permanent magnet directs a reversed first magnetic field exerting a pulling force so that the first axle is released to rotate, and the second permanent magnet directs a reversed second magnetic field exerting a pushing force so that the first axle becomes coupled with the second axle.

Clutch actuating mechanism for electronic cylinders in locks and method for operating the same.

The clutch actuating mechanism for an electronic cylinder in locks relates, in particular, to a clutch actuating mechanism which is responsible for storing the energy supplied by the motor and returning said energy to the clutch at the moment it passes from a clutched position to a declutched position, all of this being carried out with reduced energy consumption. It also relates to the method for operating said mechanism.

The invention relates to an improved locking device for the closure of doors on cabinets, of boxes or compartments, which offers high resistance to unauthorized attack and, in particular, can take up high torques. For this purpose, use is made of a coupling arrangement having a manually or electronically movable actuating member, a driver (40), which interacts with the actuating member, and a blocking member (50). The blocking member (50) has the form of a cylinder, the cylinder axis of which runs parallel to the rotor axis (19). The blocking member (50) in its blocking position engages in a depression (17) on the outer side of the rotor (10) or in a depression (22) on the inner side of the wall (21) of the stator (20) and is held in this blocking position by spring force.

A barrier device for a locking device is provided with a stator and with a rotor as two components and with a barrier element. The rotor is mounted in the stator. The barrier element is mounted in a first component of the components and can be moved between a first position and a second position. In the first position, the barrier element engages in a second component of the components. In the second position, the barrier element is disengaged from the second component. The second component has a first contact surface for the barrier element, which moves the barrier element from the first position into the second position when the rotor rotates. The second component further has a second contact surface for the barrier element, which leaves the barrier element in the first position when the rotor begins to rotate. A locking device is provided with the barrier device.

An electromechanical lock cylinder. The cylinder includes a core front end, a core back end coupled with a tailpiece, an actuator mechanism, switchable between a locked state and an unlocked state, to keep the core front end uncoupled with the core back end in the locked state, to couple the core front end with the core back end in the unlocked state to enable the core front end to rotate the core back end from a locked rear position to an unlocked rear position, and to return to keep the core front end uncoupled with the core back end in the locked state; an enforced coupling to couple the core front end with the core back end as the core front end starts to rotate the core back end away from the locked rear position in the unlocked state, and decouple the core front end from the core back end as the core back end returns to the locked rear position; an operation knob, coupled with the core front end, to enable a user to rotate the operation knob from an initial knob position so that the core front end rotates the core back end from the locked rear position to the unlocked rear position in the unlocked state; and a return force mechanism to rotate the operation knob further after the user first has rotated the operation knob away from the initial knob position and then released the operation knob, whereby the core back end is rotated to the locked rear position by the core front end due to the coupled enforced coupling.