| 摘要 |
PURPOSE: A safe door lock device is provided to reduce a failure ratio by preventing a latch bolt and a handle from being meshed and by making the structure of the door simple. CONSTITUTION: A safe door lock device comprises a housing(100), a through hole(104), an adjusting shaft(130), first and second open and close controllers(140,150), first and second handles, first and second subsidiary handles(165,175), a spring(180), and a latch unit(200). The latch unit comprises a plurality of latch bolts, a latch combination part, a latch case, and a latch reconstruction spring. The latch combination part is connected to a body(245) through an opening/closing plate inlet. The latch case is fixed and coupled on a joint groove formed on the front surface of the housing.
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