A connector device includes a connector component and a housing body. The connector component has a connector head. The housing body includes a first body portion and a second body portion. The first body portion has an accommodating space for the connector head. The second body portion is coupled to the first body portion and is rotatably movable with respect to the first body portion, wherein the second body portion has a first position and a second position. When the second body portion rotates to the first position, access in and out of the accommodating space is allowed for the connector head. When the second body portion rotates to the second position, the second body portion blocks the connector head access into or out of the accommodating space.

Locking device having a guard lock for safety doors, comprising a mechanical actuator which can be fastened on a movable door part and a housing which interacts with the actuator and can be fastened to a door counterpart, which housing comprises a receptor to which the actuator can be inserted, and the housing comprises a locking element which is displaceable between an unlocked position, in which the actuator can be released, and a locked position, in which the actuator can be fixed relative to the receptor, wherein the actuator comprises an engagement tongue having an engagement recess for mechanical operative engagement with a head end of a locking element in form of an engagement plunger, the engagement plunger being guided in the housing so as to be longitudinally displaceable a spring-biased manner in the in a plunger longitudinal direction relative to an inner fixed bearing, being shaped as a bushing and carrying radially displaceable and fixable engagement elements which lock the engagement plunger at its inner contour in the locked position during a defined state, for which purpose the engagement plunger comprises an engagement stop at the inner contour which acts in the longitudinal direction.

A lock comprising a latch bolt and a dead bolt, a dead bolt lever to move the dead bolt, a key actuated cylinder with a rotary driving bit, a second turn latch bolt lever to move the latch bolt by using the key, a second turn latch bolt driver as an intermediary between the driving bit and the second turn lever, a spring urging the second turn driver in the path of the driving bit, and a locking mechanism to lock the dead bolt. The second turn driver comprises a follower portion which, upon actuation by the driving bit, moves the second turn driver out of the path of the driving bit thereby preventing the driving bit from being blocked. The locking mechanism comprises a slot having two catches and a spring biased lever mounted on the dead bolt lever to lock the dead bolt lever.

A lock mechanism including a main body, a base, a rotating component and a position limiting component is provided. The base is slidably connected to the main body, and the main body is sleeved on the base. The rotating component is pivoted to the main body, and the rotating component is configured to drive the base to slide relative to the main body. The position limiting component is coupled to the rotating component so as to lock the rotating component with one of the main body and the base. A holding structure of an electronic device is also provided.

Latch assemblies for opening and closing openable structures having a housing defining a cavity, a handle movably mounted to the housing, and a latching mechanism between the handle and the housing. The latching mechanism includes at least one guide pin mounted to the housing, a first body movable along the at least one guide pin and having a first latching element extending through the housing, a second body movable along the at least one guide pin and having a second latching element extending through the housing, a first link attached to the first body, a second link attached to the second body, and a link connector operably connecting the first link to the second link, wherein movement of the link connector urges the first latching element and the second latching element apart through movement of the first link and the second link and the first body and the second body.

Latch systems for opening and closing openable structures including a first latch assembly, a second latch assembly separated from the first latch assembly, and an assembly connector operably connecting the first latch assembly to the second latch assembly such that operation of one of the first latch assembly and the second latch assembly causes operation of the other of the first latch assembly and the second latch assembly through the assembly connector. Lateral movement of a portion of the first latch assembly in operation causes lateral movement of the assembly connector which causes lateral movement of a portion of the second latch assembly to thus operate the second latch assembly.

A door lock case has a main body. The main body includes a square tongue therein. The square tongue is connected with an electric control unit and a manual control unit. The electric control unit has a driving member. The driving member is connected with a driven member. The driven member is connected to the square tongue. The electric control unit further has a drive source. The drive source first drives the driving member to move the driven member, so that the driven member moves the square tongue to an unlocked position and then drives the driving member to move to a clutch position, so that the driving member is disengaged from the driven member. In this way, the user can directly open the door to pass through the door after unlocking and can control the movement of the square tongue manually via the manual control unit.

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.

This invention discloses an automatic locking device for snow anti-skid chains. Wherein the snow anti-skid chain comprises a ratchet wheel lock catch and a anti-skid chain; the anti-skid chain is respectively fixed at the buckle and the outer part of the housing aforesaid, and extends towards three directions. The ratchet wheel lock catch is used to make the anti-skid chain to attach to automobile tires firmly and is controlled by pressing two buttons on its lower side, which is different from existing operational actions of braking off and twisting. The pressing action is simple and available for one hand operation. The overall structure is simple and reliable, conforming to use habits of control actions by users.

A manually operated locking bolt (1) having a cylindrical, sleeve-shaped bolt guide (3) and a bolt (2), which is mounted to be axially displaced in the bolt guide (3), and which has a locking end (15) and an actuating end (31), wherein the bolt (2) is mounted to be axially displaced between a first axial end position or a second axial end position within the bolt guide (3) and can be locked, wherein at least one sensor (27) is fastened to the bolt guide (3), which sensor detects the two axial end positions of the bolt (2) as a measured variable and generates therefrom a further processable electrical signal.