| 摘要 |
The present invention relates to a spiral-type rolling door. According to an embodiment of the present invention, the spiral-type rolling door comprises: a plurality of supports which are formed in an upright shape to face each other at intervals and a first guide rail for guiding the door to move vertically; a plurality of long door frames which move along the first guide rail, have a predetermined width, and are interposed, in a horizontal direction, between the supports; accommodation units which are formed on upper end portions of the support, including a spiral-type second guide rail that accommodates the door frames as the door frames are raised up and wound; rolling units which are formed on the upper end portion of the supports and wind up or release down the door frame along the first guide rail or the second guide rail; and a control unit which controls the operation of the rolling units for raising or lowering the door frames in a vertical direction. The control unit stops operation of the door frames when the door frames are lowered in the vertical direction by checking whether a person or an object enters by using a sensing signal transmitted by safety sensors installed on the supports. When the operation for sensing a human body is canceled, the control unit restarts operation of the door frames and thus can open and close the door in a safe and rapid manner. |
