Door locking apparatus

Abstract

Disclosed is an electronic door locking apparatus having a mortise lock including dead bolt and latch bolt installed therein, which is able to easily open a door from the outside by inserting a metal card having a magnet installed inside if a power source such as a dry battery is not supplied or if the locking apparatus is not used due to other mechanical defects, and also able to perform a lock function since a dead bolt is locked if a handle grip of an outer unit is revolved upwards when there are defects in a driving motor or electronic components. For this purpose, the present invention provides a door locking apparatus including a mortise lock having a dead bolt extruded and contracted by a driving force of a motor installed in the inner unit in order to lock/unlock a door, and a door locking/unlocking latch bolt operated by the handle grips of the inner and outer units; a latch bolt driving means for operating the latch bolt; a dead bolt driving means for operating the dead bolt; an emergency release assembly installed inside the outer unit and engaged with the handle grip of the outer unit in order to unlock the locked dead bolt when it is turned off by means of the motor; and an emergency card inserted into the emergency release assembly to unlock the dead bolt.

Dependencies are inferred from the claim text.