MORTISE WITH SWIFT RETREATING MECHANISM OF DEAD BOLT

摘要

PURPOSE: A mortise structure capable of transferring a dead bolt in advance is provided to draw the dead bolt to the inner side of a door lock in the operation of an indoor lever. CONSTITUTION: A dead bolt operation lever forms a dead bolt pressing unit (106) moving a dead bolt slider (25) by pushing both sides of a hanging groove (26) of the dead bolt slider. The dead bolt operation lever includes an operation arm (104). The operation arm forms a fifth water pressure unit (105). the fifth water pressure unit receives a rotary force from a dead bolt hanging blade (66) by coming into contact with the dead bolt hanging blade of a concurrent unlock block (60) to the upper side of the dead bolt pressing unit.