| 摘要 |
The present invention relates to an auxiliary door for opening and closing a path punched for allowing only deliveries to come in and out on a front door for dividing the outdoor and indoor spaces. Moreover, the auxiliary door comprises: outer and inner plates integrated with outer and inner fixing plates in the form of a frame attached to a front door by surrounding the periphery of the path, and outer and inner inserting pieces vertically protruding toward the path on the inner circumferential surface of the fixing plate and inserted into each other; an auxiliary door including upper and lower protecting plates separately hinged to the upper and lower ends of the outer inserting pieces, and a spring for applying elasticity for closing the path on the protecting plates; a main door including a rotating plate hinged to the lower end of the outer inserting piece for opening and closing the path, and a fastener coming out toward the outer inserting piece on the rotating plate to perform a locking or unlocking operation; and a lateral plate including a pair of blocking plates separately hinged to both ends of a rotating plate and the outer inserting pieces, and a hinge for connecting the blocking plate to be overlapped with each other. The present invention has effects of minimizing the view of criminals to prevent the criminals from recognizing residents in the room, and blocking that the arm of criminals accesses a locking device for opening and closing a front door even when the arm comes into the room. |
