| 主权项 |
1. A door mortise lock mounted in a door, the door mortise lock comprising:
a dead bolt driving unit that operates a dead bolt;a latch bolt driving unit that unlocks a latch bolt when a time interval passes after the dead bolt is retracted by the dead bolt driving unit, when unlocking information is inputted from a lever located on an exterior of the door, and wherein the latch bolt driving unit unlocks the latch bolt before the dead bolt is retracted by the dead bolt driving unit when a push operation or a pull operation of a lever located on an interior of the door occurs; and
a connection unit that is operatively connected to both the dead bolt driving unit and the latch bolt driving unit, and selectively operates the dead bolt driving unit and the latch bolt driving unit, wherein the dead bolt driving unit comprises: a driving cam that rotates due to a dead bolt motor when the unlocking information is inputted from the lever located on the exterior of the door, and rotates due to the connection unit during the push operation or the pull operation of the lever located on the interior of the door; an operation lever that is connected to the driving cam via a rod and moves to retract the dead bolt when the driving cam rotates; and a gear unit that is connected to the connection unit such that the driving cam rotates due to the connection unit during the push operation or the pull operation of the lever located on the interior of the door, and wherein the connection unit comprises: a first rotating body that rotates due to the push operation or the pull operation of the lever located on the interior of the door; a second rotating body that rotates due to a pull operation or a push operation of the lever located on the exterior of the door; a connection lever that rotates about a first hinge at a first side when the first rotating body rotates; and a driven rack that is pivotably coupled through a second hinge to a second side of the connection lever and rotates a driving gear as the connection lever is rotated about the first hinge, and wherein the driving gear meshes with the gear unit so as to rotate the driving cam when the driving gear is rotated by the driven rack. |
