This invention discloses a lock that set on a suitcase of being opened or closed without using a zipper, which including an operating component and a locking component that are separately-mounted; the operating component is set on a non-border position of the suitcase, and the locking component is set on the border of the suitcase, wherein the locking component comprises at least one locking unit, the force transfer between the operating component and the locking component is provided by a force transmission mechanism that connected between the operating component and the locking component; the operating component comprises an operation member, and the locking unit comprises a lock head and a lock hook, wherein driving the operation member can drive the lock head or the lock hook to move through the force transmission mechanism, to lock or unlock the lock. This invention also provides a suitcase provided with the lock as described above. This invention set the operating component and the locking component separately, which solves the problem that the lock can only be installed on the border of the suitcase, and only the locking component needs to be installed on the border of the suitcase, while the operating component can be installed at any position of the suitcase other than the border.

A latch assembly that is adjustable between first and second backset settings. A cam is rotatable about a cam axis, and facilitates linear displacement of a latch link in a first direction. A multiplier link is rotatable about a multiplier link axis that is offset from the cam axis can be rotated in the first rotational direction by engagement with the latch link. A latch bar is coupled to the multiplier link and is linearly displaced in a second direction by rotation of the multiplier link in the first direction. The latch apparatus also includes a latch bolt that is coupled to the latch bar, the latch bolt being displaced toward a retracted position by the displacement of the latch bar in the second direction. The latch assembly can also include a dead latch link can block retraction of at least the latch bolt.

A latch assembly that is adjustable between first and second backset settings. A cam is rotatable about a cam axis, and facilitates linear displacement of a latch link in a first direction. A multiplier link is rotatable about a multiplier link axis that is offset from the cam axis can be rotated in the first rotational direction by engagement with the latch link. A latch bar is coupled to the multiplier link and is linearly displaced in a second direction by rotation of the multiplier link in the first direction. The latch apparatus also includes a latch bolt that is coupled to the latch bar, the latch bolt being displaced toward a retracted position by the displacement of the latch bar in the second direction. The latch assembly can also include a dead latch link can block retraction of at least the latch bolt.

A latch assembly that is adjustable between first and second backset settings. A cam is rotatable about a cam axis, and facilitates linear displacement of a latch link in a first direction. A multiplier link is rotatable about a multiplier link axis that is offset from the cam axis can be rotated in the first rotational direction by engagement with the latch link. A latch bar is coupled to the multiplier link and is linearly displaced in a second direction by rotation of the multiplier link in the first direction. The latch apparatus also includes a latch bolt that is coupled to the latch bar, the latch bolt being displaced toward a retracted position by the displacement of the latch bar in the second direction. The latch assembly can also include a dead latch link can block retraction of at least the latch bolt.

A latch assembly that is adjustable between first and second backset settings. A cam is rotatable about a cam axis, and facilitates linear displacement of a latch link in a first direction. A multiplier link is rotatable about a multiplier link axis that is offset from the cam axis can be rotated in the first rotational direction by engagement with the latch link. A latch bar is coupled to the multiplier link and is linearly displaced in a second direction by rotation of the multiplier link in the first direction. The latch apparatus also includes a latch bolt that is coupled to the latch bar, the latch bolt being displaced toward a retracted position by the displacement of the latch bar in the second direction. The latch assembly can also include a dead latch link can block retraction of at least the latch bolt.

A door lock with a reinforced fireproof effect includes a lock body mounted on a door and inner and outer operating units mounted to two sides of the door, respectively. The lock body includes inner and outer chassis made of ferrous material or stainless steel having a melting point higher than 1300° C. Inner and outer fixing members coupled with the inner and outer chassis are also made of ferrous material or stainless steel. Thus, these components of the door lock are less likely to melt during a fire, reducing the spreading speed of the fire.

A latch module for selectively engaging into a striking plate of doorjamb, including at least a housing, a latch bolt, a guard bolt, and a stem for retracting the latch bolt is particularly versatile, safe and has low manufacturing costs, if the stem is movably supported relative to the latch bolt and if the stem has a block for entraining the latch bolt, if the stem reaches a first intermediate position while being moved from the stem's closed position towards the stem's open position.

A latch module for selectively engaging into a striking plate of doorjamb, including at least a housing, a latch bolt, a guard bolt, and a stem for retracting the latch bolt is particularly versatile, safe and has low manufacturing costs, if the stem is movably supported relative to the latch bolt and if the stem has a block for entraining the latch bolt, if the stem reaches a first intermediate position while being moved from the stem's closed position towards the stem's open position.

An intelligent door lock system coupled to a door at a dwelling. a door status device is at the dwelling. The door status device is coupled to a drive shaft of a lock device to assist in locking and unlocking a lock of a lock device at the door. The lock device is coupled to the door status device and includes a bolt. An engine, an energy source and a memory are coupled together. A camera is coupled to or part of the intelligent door lock system. The camera is configured to record in response to door lock status.

An intelligent door lock system coupled to a door at a dwelling. a door status device is at the dwelling. The door status device is coupled to a drive shaft of a lock device to assist in locking and unlocking a lock of a lock device at the door. The lock device is coupled to the door status device and includes a bolt. An engine, an energy source and a memory are coupled together. A camera is coupled to or part of the intelligent door lock system. The camera is configured to record in response to door lock status.