The present invention relates to interlocking multiple sliding doors, which may comprise: a base frame which is mounted on the lower portion or the upper portion of a door frame, and has a first rail to a third rail which are arranged in parallel; a first window frame which is opened and closed by being coupled to the first rail, a second window frame which is opened and closed by being coupled to the second rail and arranged to be in parallel with the first window frame, and a third window frame which is opened and closed by being coupled to the third rail and arranged to be in parallel with the second window frame; a first interlocking unit which is composed of first and second roller units which are respectively formed at both side end portions of the base frame, and first and second belts which are rotated by being coupled to the first and second roller units, wherein a first window frame is connected to the first belt, and a second window frame is connected to the second belt such that the second window frame may be moved after the first window frame has moved at a time interval; a second interlocking unit which is composed of third and fourth roller units which are respectively formed at both side end portions of the base frame, and third and fourth belts which are rotated by being connected to the third and fourth roller units, wherein a third window frame is connected to the fourth belt, and a second window frame is connected to the third belt such that the third window frame may be moved after the second window frame has moved at a time interval; and a bidirectional distribution driving unit which is composed of a driving pulley which is hinge-coupled to the second window frame by means of an axial pin, and is connected to the second belt and the third belt while circumscribing the same to simultaneously rotate the same in opposite directions, and a first interlocking pulley and a second interlocking pulley which are arranged at both sides on the outer circumferential surface of the driving pulley to circumscribe the same in a symmetrical manner to be hinge-coupled by an axial pin. Therefore, the present invention may be conveniently used.

본 발명은 연동형 다중 미닫이문에 관한 것으로, 문틀의 하부 또는 상부에 장착되며, 평행하게 배열되는 제1레일 내지 제3레일이 형성된 베이스프레임; 상기 제1레일에 결합되어 개폐되는 제1창호프레임과, 제2레일에 결합되어 개폐되며 상기 제1창호프레임과 평행하게 배치되는 제2창호프레임과, 제3레일에 결합되어 개폐되며 상기 제2창호프레임과 평행하게 배치되는 제3창호프레임; 상기 베이스프레임의 양측 단부에 각기 형성되는 제1,2롤러부와, 상기 제1,2롤러부에 연결되어 회전되는 제1,2벨트로 구성되고, 제1벨트에 제1창호프레임이 연결되고, 제2벨트에 제2창호프레임이 연결되어 제1창호프레임이 이동한 후 시간차를 두고 제2창호프레임이 이동되도록 하는 제1연동부; 상기 베이스프레임의 양측 단부에 각기 형성되는 제3,4롤러부와, 상기 제3,4롤러부에 연결되어 회전되는 제3,4벨트로 구성되고, 상기 제4벨트에 제3창호프레임이 연결되고, 제3벨트에 제2창호프레임이 연결되어 제2창호프레임이 이동한 후 시간차를 두고 제3창호프레임이 이동되도록 하는 제2연동부; 상기 제2창호프레임에 축핀으로 힌지결합되며, 제2벨트 및 제3벨트에 연결되어 동시에 상반되게 회전구동시키도록 외접되어 연결되는 구동풀리와, 상기 구동풀리의 외주면 양측에 대칭되게 외접되게 배치되어 축핀으로 힌지결합되는 제1연동풀리와 제2연동풀리로 구성된 양방향 배분 구동부;를 포함한다.