An electric lock with electric and manual unlock mode, comprising: a case combining with a side plate and a case cover; a latch bolt, a latch bolt shaft and a latch bolt spring, the front end of the latch bolt shaft is combined with a blocking member, and the blocking member uses the elastic force of the latch bolt spring to stick out of the side plate to lock, when the external force applied to the latch bolt shaft is sufficient to resist the elastic force of the latch bolt spring, the blocking member will retract into the side plate to unlock; a unlock crank, having an electric push member and a manual push member, and a push member relative to the latch bolt shaft; and a linear actuator and an actuating arm, the outer end of the actuating arm is combined with a push block relative to the electric push member, and a push block return spring is set relative to the push block.

The invention relates to electromechanical non-volatile locking devices powered by a key battery with an electronic coding of unlock code. The technical result of the invention is to reduce energy costs when opening and closing the lock. An electromechanical locking device comprising an electronic key comprising: a tail section with protrusions, negative and positive contacts; a case wherein the power supply and electronic board for storing the electronic code are located, and a lock comprising: a lock case comprising a front bushing and a stationary inner bushing wherein a rotating lock bushing is located, comprising inlet and end sections, wherein negative and positive contacts of the lock located in the inlet section, and the end section is connected to the locking mechanism of the lock by means of a tang; a coupling mechanism comprising a slider with a return spring, configured to transfer force from the protrusion of the tail section of the key to compress the trigger spring pin when inserting the tail section of the electronic key into the shaft of the stationary inner bushing, and fixing the trigger spring pin using a locking mechanism; a lock opening mechanism comprising an electronic control board configured to identify the electronic code of the electronic key and transmit a control signal to an electromagnet, which is configured to transmit force to the locking mechanism by means of a tang by transmitting force to the end section of the rotating bushing of the lock when turning the electronic key in the inlet section of the rotating bushing of the lock after identifying the electronic code of the electronic key, and the transmission of force to the end section of the rotating bushing of the lock connected to a tang is carried out by moving the pin into the hole of the end section of the rotating bushing of the lock after the action of the electromagnet on the locking mechanism, leading to the release of the trigger spring pin, wherein the slider and the pin are configured to return to their original position due to the accumulated energy of the return spring when removing the tail section of the electronic key from the shaft of the stationary inner bushing.

A latching structure, a household appliance and a control method for the household appliance are provided. The latching structure has a snapping member, a bracket, a limiting member, and a driving assembly. The snapping member is mounted on a door body and has a hook. The bracket is mounted on a housing and has a limiting portion. The hook can penetrate the bracket. The door body is connected to the housing in an openable and closable manner. The limiting member is rotatably mounted to the bracket and can reciprocate between an unlocked position and a locked position. The driving assembly is configured to engage with or disengage from the limiting member. In the unlocked position, the limiting member avoids the hook, and in the locked position, the limiting member is suitable for fitting the hook to limit a position of the hook.

A latching structure, a household appliance and a control method for the household appliance are provided. The latching structure has a snapping member, a bracket, a limiting member, and a driving assembly. The snapping member is mounted on a door body and has a hook. The bracket is mounted on a housing and has a limiting plate. The hook can penetrate the bracket. The door body is connected to the housing in an openable and closable manner. The limiting member is rotatably mounted to the bracket and can reciprocate between an unlocked position and a locked position. The driving assembly is configured to engage with or disengage from the limiting member. In the unlocked position, the limiting member avoids the hook, and in the locked position, the limiting member is configured to limit a movement range of the hook.

An electronic latch retraction mechanism for an exit device may include an actuator including an output shaft coupled to a crank head, where the crank head is configured to rotate between first and second rotational positions. The electronic latch retraction mechanism may also include a crank coupled to the crank head such that the crank is at least partially rotatable to the crank head, where the crank is configured to engage a push bar of the exit device to move the push bar from the from the extended position to the retracted position when the crank head moves from the first rotational position to the second rotational position.

An electromechanical lock includes a lock cylinder having core front and back ends, and an operation knob, coupled with the core front end, enabling a user to rotate the operation knob from an initial knob position so the core front end rotates with the core back end from a locked rear position to a unlocked rear position in an unlocked state of the electromechanical lock. The electromechanical lock further includes a return force mechanism rotating the operation knob towards the initial position after the user first has rotated the operation knob away from the initial knob position and then released the operation knob. The return force mechanism includes first and second magnetic parts coupled with the operation knob and a lock cylinder core body, respectively. An interaction between first and second magnetic force fields of the first and second magnetic parts, respectively, is configured to rotate the operation knob.