A door latch clasp assembly configured for use with a door having a door latch assembly and a door latch plate is provided. The door latch clasp assembly includes a first aperture section having a first aperture. The first aperture section has an arcuate cross-sectional shape. A second aperture section has a second aperture and the second aperture section has an arcuate cross-sectional shape. An intermediate section extends from the first aperture section to the second aperture section. The intermediate section has an arcuate cross-sectional shape and a latch assembly aperture. The arcuate cross-sectional shapes of the first and the second aperture sections and the arcuate cross-sectional shape of the intermediate section are configured to approximate an arcuate cross-sectional shape of a perimeter wall of a face bore of the door.

A length adjustable door lock includes a latch assembly, a lock core connected with the latch assembly, a lock bolt connected with the lock core, and a housing sleeved on the lock bolt. The latch assembly and the lock core respectively have an embedding opening and slot having matchable shape, wherein a buckling portion is formed and provided on the lock bolt coordinately, wherein the buckling portion is adapted for being assembled in the slot of the lock core through the embedding opening, which is easy for the assembling.

A transmission mechanism applied to a lock and for controlling the lock to switch between an unlocked state and a locked state. The lock includes a first handle set including a first cover plate which includes a first fitting portion. The transmission mechanism includes a transmission element and a moving component. The transmission element is connected to the first handle set in a manner that the transmission element is incapable of moving along a rotating axis and has an abutting portion. The moving component is disposed on the transmission element in a manner that the moving component is capable of moving along the rotating axis and includes a first engaging groove, a second engaging groove and a second fitting portion. When the transmission element is operated to rotate, the abutting portion is capable of switching between the first engaging groove and the second engaging groove.

An exemplary bolt assembly includes a housing, a bolt, and a magnetic sensor. The housing includes a tubular sleeve configured for mounting in a latch bore of a door. The bolt is movably mounted to the housing for movement between an extended position and a retracted position. The magnetic sensor includes wires that extend through the tubular sleeve, and is operable to transmit information relating to an open/closed position of the door.

A door lock chassis has a gauge insert that defines different dimensions corresponding to different door thicknesses. The gauge insert is positionable in the lock chassis in different orientations corresponding to the different dimensions used to align the lock chassis for different door thicknesses. Additionally, a door lock may include an anti-rotation assembly for preventing rotation of the lock chassis. The anti-rotation assembly may include a retention member that is secured to an inside hub of a lock chassis. As an anti-rotation member is displaced in a first axial direction along the inside hub to a mount position, the anti-rotational member may deflect resilient members of the retention member. With the anti-rotation member at the mounted position, the anti-rotation member may be in a frictional engagement with the previously deflected resilient members so that anti-rotation member is retained at the mount position.

A door lock chassis has a gauge insert that defines different dimensions corresponding to different door thicknesses. The gauge insert is positionable in the lock chassis in different orientations corresponding to the different dimensions used to align the lock chassis for different door thicknesses. Additionally, a door lock may include an anti-rotation assembly for preventing rotation of the lock chassis. The anti-rotation assembly may include a retention member that is secured to an inside hub of a lock chassis. As an anti-rotation member is displaced in a first axial direction along the inside hub to a mount position, the anti-rotational member may deflect resilient members of the retention member. With the anti-rotation member at the mounted position, the anti-rotation member may be in a frictional engagement with the previously deflected resilient members so that anti-rotation member is retained at the mount position.

A door lock assembly is configured for installation in a cross bore of a door. The lock assembly includes a lock housing including a disk portion having an outer perimeter and an inner wall extending from the disk portion and defining an annular space between the inner wall and the outer perimeter and a lock space inside of the inner wall. The inner wall is sized to fit within the cross bore and define an annular gap between the inner wall and the cross bore. A retention clip is removably attached to the lock housing and includes a retention portion that engages the cross bore to removably retain the lock housing within the cross bore without the use of fasteners.

A door lock assembly is configured for installation in a cross bore of a door. The lock assembly includes a lock housing including a disk portion having an outer perimeter and an inner wall extending from the disk portion and defining an annular space between the inner wall and the outer perimeter and a lock space inside of the inner wall. The inner wall is sized to fit within the cross bore and define an annular gap between the inner wall and the cross bore. A retention clip is removably attached to the lock housing and includes a retention portion that engages the cross bore to removably retain the lock housing within the cross bore without the use of fasteners.

An electronic lock with a latch assembly, an interior assembly and an exterior assembly. The latch assembly includes a bolt movable between an extended position and a retracted position. The interior assembly is configured to move the bolt between the extended position and the retracted position. The exterior assembly includes a touch keypad subassembly configured to detect touches to at least a portion of its surface. The touch keypad subassembly defines an opening through which a wiring harness extends. The opening in the touch keypad subassembly is sealed, at least in part, by an epoxy resin and/or internal structure of the touch keypad subassembly.

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.