The present disclosure is directed to a lock assembly comprising an inner housing positionable on one side of a movable structure such as a door and an outer housing positionable on an opposing side of the structure. A pocket connection region having an aperture formed through a wall of the inner housing is configured to receive a head of a fastener therethrough. After the fastener extends through the aperture, a clamp device may be moved from an open position to a closed position so as to releasably lock the fastener to the pocket connection region of the inner housing. In another form, a retainer is configured to hold the fastener with respect to the inner housing during installation of the lock assembly. In this manner an inner housing may be quickly connected to an outer housing when installing a lock assembly to the structure.

A lock includes a latch assembly, a first locking mechanism, a second locking mechanism, a linkage mechanism, a clutch mechanism, and a rebounding mechanism. The lock utilizes a first clutch member and a second clutch member of the clutch mechanism to coordinate with a leaning portion of an inner linkage member of the linkage mechanism to achieve that when the turned inner linkage member will outward push the first clutch member and the second clutch member away from each other to make the second clutch member rapidly and accurately be engaged with an outer linkage member of the linkage mechanism so as to make the outer linkage member to drive the latch assembly to unlock. The arrangement provided by the present invention that has the first clutch member and the second clutch member coordinate with the leaning portion of the inner linkage member simplifies the entire structure of the lock.

A status indicating handle assembly generally includes a handle, an activation carrier mounted in the handle, and a status indicator mounted in the handle and engaged with the activation carrier. The handle includes a shank extending along a longitudinal axis and a grip portion extending laterally from the shank. The activation carrier is mounted in the shank, and has an unlocking position and a locking position. The status indicator has a first state in which a first indicium is displayed and a second state in which the first indicium is not displayed. The activation carrier transitions the status indicator between the first state and the second state as the activation carrier moves between the locking position and the unlocking position.

A door lock assembly with interchangeable lock cylinders is described. The door lock assembly includes a handle. The handle includes a lock cylinder passage to receive a push to lock cylinder or a key to lock cylinder. A spring plate includes a bolt opening to position the lock cylinder. The spring plate further includes a side bolt opening. A side bolt is configured to selectively enter the side bolt opening of the spring plate to lock the lock cylinder and to selectively withdraw the side bolt from the side bolt opening of the spring plate to unlock the lock cylinder.

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.

A lock includes a latch assembly, a first locking mechanism, a second locking mechanism, a linkage mechanism, a clutch mechanism, and a rebounding mechanism. The lock utilizes a first clutch member and a second clutch member of the clutch mechanism to coordinate with a leaning portion of an inner linkage member of the linkage mechanism to achieve that when the turned inner linkage member will outward push the first clutch member and the second clutch member away from each other to make the second clutch member rapidly and accurately be engaged with an outer linkage member of the linkage mechanism so as to make the outer linkage member to drive the latch assembly to unlock. The arrangement provided by the present invention that has the first clutch member and the second clutch member coordinate with the leaning portion of the inner linkage member simplifies the entire structure of the lock.

A door lock for a handle, comprises a housing, a rotatable connector inside the housing, a first elastic element and a second elastic element both arranged inside the housing. The rotatable connector is interacted with the handle. The first elastic element is at least configured to provide a restoring force for the handle to return to its origin position when the handle is rotated upward to lock the door, and the second elastic element is configured to provide a restoring force for the handle to return to its origin position when the handle is rotated downward to unlock and open the door, as well as to provide enough resistance to remain handle at its origin position when the handle is released. The door lock is effort-saving for the users to rotate the handle upward, and also adapted for various handles having different weights, to be remained at the origin position when the handle is released.

A handle-locking mechanism for a door comprises a sliding bar, a locking member and a rotatable member all inside a lock body, wherein the rotary motion of the rotatable member drives an upper latch and a lower latch to a locking position and unlocking position; the sliding bar is slidably arranged inside the lock body and one end of the sliding bar abuts against the bolt, and the sliding bar is provided with a first elastic element, and the sliding bar is pushed against the elastic force from the first elastic element when the bolt retracts; the locking member is coupled with the sliding bar, and when the bolt stretches out, the locking member is brought by the sliding bar to a position to block the rotary motion of the rotatable member.

An anti-unlocked mechanism comprises a transmission gear, a sliding rod, a locking member and a first elastic member. The transmission gear includes an arc surface. An end of the sliding rod contacts the deadbolt of the lock body. The sliding rod is provided with a fixed stopper and a second elastic member. When the deadbolt is retracted, the sliding rod moves with the deadbolt against the elastic force of the second elastic member. When the deadbolt extends, the locking member moves with the sliding rod to block the rotation of the rotating part. The first elastic member comprises first and second protrusions. The second protrusion will not hinder the fixed stopper of the slide rod unless the first protrusion contacts with the circular arc surface, which will block the movement of the locking member to block rotation of the rotating part.

The method can include: introducing a neck portion of the handle in a receiving aperture of the frame and thereby positioning a second engagement member of the neck into a tangential engagement with a first engagement member of a rotary holder, and positioning a transversal groove defined in the neck portion in axial alignment with a clip axially trapped in a cam cavity of the frame, the clip further being tangentially trapped by the rotary holder but free to slide in a radial orientation relative to the rotary holder; and rotating the rotary holder around the rotation axis, via rotation of the handle, along a camming angle, the rotary holder thereby pivoting a clip around the rotation axis, inside a cam cavity, the cam cavity pushing the clip radially inwards during said pivoting, until it is engaged in the transversal groove, preventing axial retraction of the neck portion thereafter.