| 摘要 |
The present invention provides a device for opening and closing a front entrance, comprising: a knob part provided, at a door, in a section-movable state; a first lock device section-moved by receiving power when the knob part is section-moved, and section-moved in a direction perpendicular to the section-movement direction of the knob part by converting the power in the direction perpendicular to the section-movement direction; a lock key rotatably coupled to the center of the knob part; and a second lock device rotated by receiving the rotating power of the lock key, and linearly moved by means of the force transmitted during rotation so as to be section-moved in the direction perpendicular to the section-movement direction of the knob part. |
