Patent ID: 9556645
Date: 2017-01-31
CPC Classifications: E05B,E05C,Y10T

Claim:
1. An apparatus for opening and closing an entrance, comprising: a door lock housing having in a side surface thereof a first opening in which a latch bolt is disposed, the door lock housing being installed in a door in such a way that the first opening is exposed out of an outer surface of the door; a first and a second door handle respectively provided on a first and a second surface of the door, each of the first and second door handles being configured to be pushed or pulled; a movable member disposed in the door lock housing and coupled at respective opposite ends thereof to the first and second door handles, the movable member being horizontally moved by pushing or pulling either the first door handle or the second door handle, with a lift guide block provided on a medial portion of an upper surface of the movable member, the lift guide block guiding upward movement of a roller; a rotating unit disposed across an upper surface of the movable member, the rotating unit being coupled at a first end thereof to a hinge shaft, with the roller provided in a lower surface of a medial portion of the rotating unit, the roller making contact with the lift guide block, the rotating unit including a bent part on a second end thereof, wherein when the movable member is horizontally moved, the rotating unit is rotated around the hinge shaft by the roller moving upwards along the lift guide block; a latch bolt coupling unit locked at a first end thereof to the bent part of the rotating unit and coupled at a second end thereof to the latch bolt disposed in the first opening, the latch bolt coupling unit being moved to leftwards or rightwards depending on a direction of the rotation of the rotating unit; a restoring spring wrapped around the hinge shaft, the restoring spring fixed at a first end thereof to an inner surface of the door lock housing and fixed at a second end thereof to the rotating unit so that the rotating unit is returned to an original state thereof by the restoring spring; a first and a second locking unit respectively installed in the first and second door handles; an actuating shaft disposed in the door lock housing, the actuating shaft coupled at a first end thereof to the first locking unit and coupled at a second end thereof to the second locking unit so that the actuating shaft is rotated leftwards or rightwards by manipulating the first or the second locking unit; a rotating lever coupled to the actuating shaft and disposed in the door lock housing, the rotating lever being rotated leftwards or rightwards by the rotation of the actuating shaft; an opening and closing member moved leftwards or rightwards in conjunction with the rotation of the rotating lever; and a dead bolt coupled at a first end thereof to the opening and closing member, the dead bolt being disposed at a second end thereof in a second opening formed in the side surface of the door lock housing.