A door lock, assembled in a door sheet, is provided, wherein the door lock has a latch, a first locking mechanism, and a second locking mechanism, wherein the door lock is adapted to be assembled on the door sheet through coupling the first locking mechanism and the second locking mechanism onto the latch. The first locking mechanism and the second locking mechanism have a spiral resilient member screw and abut on a bulge so as to lock the first locking mechanism and the second locking mechanism corresponding to the door sheet. At the same time, an engaging member of the second locking mechanism can both resiliently abut against an upper engaging member and a lower engaging member of the first locking mechanism, so as to limit the lateral movement of the first locking mechanism and the latch, which is not only assembled conveniently. Besides, the engaging and abutting structures among the engaging member, the upper engaging member, and the lower engaging member as well as the spiral resilient member and the bulge are very simple and effective.

The invention belongs to the technical field of locks, and particularly relates to a lock facilitating double-locking from the outside. The lock comprises a cylinder, a cylinder follower, and a bolt component. The lock further comprises a rotating handle, a fixing part fixedly connected with an external supporting surface, a rotating part fixedly connected with the rotating handle and movably connected with the fixing part, a stopper arranged on the fixing part and movably connected with the rotating part, and an adapter movably connected with the rotating part and connected with the cylinder follower. The structure facilitates double-locking from the outside. A restoration structure for restoring the cylinder is not needed. Therefore, the structure is simple, cost is low, the adapter is easy to mount and dismount, a user can adjust the installation mode of the adapter and the cylinder follower, and even non-professionals can install the lock.

A tamper proof lock has a bolt with a retracted position and an extended position. A knob has a first position wherein a key operates the bolt and a second position wherein the key does not operate the bolt. A key plate is in opposition to the knob having a key slot. The knob has a locking collar attached to the shaft of the thumb knob. The locking collar has a locking orifice. A thumb knob plate has a locking pin that engages the locking orifice in the second position, wherein the thumb knob is pulled out from the thumb plate. This also stops a key inserted into the key plate from operating the bolt. As a result, bumping, picking, drilling the lock, or using an unauthorized key will be ineffective to open a door with this invention in the second position.

A hub (10) for a lock device (104), the hub (10) comprising an outer member (12) having an outer opening structure (20); an inner member (14) having an inner opening structure (22); an intermediate member (16) having an intermediate opening structure (24); an attachment element (18) configured to be attached to the intermediate member (16), and being movable between a locking position (96) and an unlocking position (102); and a locking member (28) for rotationally locking the outer member (12) and the intermediate member (16), or for rotationally locking the inner member (14) and the intermediate member (16); wherein the hub (10) is configured such that the locking member (28) can be withdrawn from the intermediate member (16) when the attachment element (18) adopts the unlocking position (102). A lock device (104) comprising a hub (10) is also provided.

A deadbolt lock with an interior assembly having a status light indicator. The deadbolt assembly has a bolt movable between an extended position and a retracted position. An interior locking assembly includes a turnpiece configured to move the bolt between its extended position and retracted position, a light, and a detection circuit. The detection circuit is configured to detect when the bolt is in the extended position and actuate the light responsive to detecting that the bolt being in the extended position.

A lock assembly, comprising: a lock cylinder comprising a cam; a deadbolt comprising a first cam follower and a second cam follower, each of the first cam follower and the second cam follower being configured to receive the cam; wherein rotation of the lock cylinder in a first rotational direction causes the cam to communicate with the first cam follower to drive the deadbolt from a retracted position to a first extended position, and further rotation of the lock cylinder in the first rotational direction causes the cam to com- municate with the first cam follower to drive the deadbolt from the first extended position to a second extended position; wherein rotation of the lock cylinder in a second rotational direction opposite to the first rotational direction causes the cam to communicate with the second cam follower to drive the deadbolt from the second extended position to the first extended position, and further rotation of the lock cylinder in the second rotational direction causes the cam to communicate with the first cam follower to drive the deadbolt from the first extended position to the retracted position.

A releasable locking mechanism for a refrigerated unit. A latch plate is movable between a position that can be engaged by a deadbolt and a position clear of the deadbolt. The latch plate is moved by a door release accessible from an interior of the refrigerated unit. When the door release is activated, a pin blocks movement of the latch plate so that the refrigerated unit remains unlocked until the pin is reset.

An auxiliary lock includes an inside housing mounted to a lock cylinder and a first flange extends axially from one of two ends of the inside housing. A mounting plate is mounted to the lock cylinder and contacts the inside housing. The mounting plate includes a second flange which is mounted to outside of the first flange of the inside housing. The lock cylinder is protected and reinforced in the radial direction by the overlapped first and second flanges. When the inside housing is hit, the inside housing does not expand outward to be pried up. The reinforcement structure is made by way of pressing to use less material and to reduce the manufacturing cost.

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 deadbolt assembly with a latch assembly and a lock cylinder. The deadbolt assembly includes a first torque blade longitudinally extending along a first axis and a second torque blade longitudinally extending along a second axis. The second torque blade is operatively coupled with the latch assembly to actuate the bolt between the retracted position and the extended position. The deadbolt assembly includes a geared arrangement operatively coupling the first torque blade and the second torque blade. The gear arrangement is configured to apply rotational movement of the first torque blade to the second torque blade.