The present application provides a lock (100) for a door. The lock comprises a housing (102), a lock mechanism (108), and a bolt (104). An end portion (112) of the bolt comprises a trigger (106). The lock mechanism is operable to move the bolt between a locked position in which the end portion extends through an opening in the housing and projects from the housing, and an unlocked position in which the end portion is within the housing. The lock further comprises a retraction mechanism (110), wherein actuation of trigger causes the retraction mechanism to automatically move the bolt from the locked position into the unlocked position.

An automated sash lock for locking a window sash comprises a linearly depressible trigger, a cam-style locking element normally biased towards a locked position, a rotatable detent actuated by the trigger, a pivotable transfer element between the detent and the locking element, and an actuator for manually operating the lock mechanism to unlock the lock when the window is in a closed and locked position. The detent is normally biased in the direction of the locking element and a portion of the detent engages a body portion of the locking element to maintain the locking element in a retracted position when the window is open. Upon actuation of the trigger by a closing window, the trigger translates linearly into the lock housing and rotates the detent into the disengaged position, pulling the detent away from the locking element and allowing the locking element to fire out of the lock housing and into an opening in a strike in the adjacent sash to prevent the sashes from relative sliding movement.

The present application provides a lock (100) for a door. The lock comprises a housing (102), a lock mechanism (108), and a bolt (104). An end portion (112) of the bolt comprises a trigger (106). The lock mechanism is operable to move the bolt between a locked position in which the end portion extends through an opening in the housing and projects from the housing, and an unlocked position in which the end portion is within the housing. The lock further comprises a retraction mechanism (110), wherein actuation of trigger causes the retraction mechanism to automatically move the bolt from the locked position into the unlocked position.

An automated sash lock for locking a window sash comprises a linearly depressible trigger, a cam-style locking element normally biased towards a locked position, a rotatable detent actuated by the trigger, a pivotable transfer element between the detent and the locking element, and an actuator for manually operating the lock mechanism to unlock the lock when the window is in a closed and locked position. The detent is normally biased in the direction of the locking element and a portion of the detent engages a body portion of the locking element to maintain the locking element in a retracted position when the window is open. Upon actuation of the trigger by a closing window, the trigger translates linearly into the lock housing and rotates the detent into the disengaged position, pulling the detent away from the locking element and allowing the locking element to fire out of the lock housing and into an opening in a strike in the adjacent sash to prevent the sashes from relative sliding movement.

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.