Manhole cover opening and closing structure using elastic ring

The present invention relates to an opening and closing structure for a manhole cover, using an elastic ring. The opening and closing structure for a manhole cover comprises: a hanging protrusion (110) protruding in the horizontal direction from the upper part of the inner circumference of a manhole...

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Bibliographic Details
Main Author CHOI, IG GU
Format Patent
LanguageEnglish
Korean
Published 09.09.2019
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Summary:The present invention relates to an opening and closing structure for a manhole cover, using an elastic ring. The opening and closing structure for a manhole cover comprises: a hanging protrusion (110) protruding in the horizontal direction from the upper part of the inner circumference of a manhole frame (100) toward the center; the elastic ring (210) formed with the diameter smaller than the diameter of a manhole cover (200) and formed on the bottom of the manhole cover (200) to be flexible without being separated from the manhole cover (200); an opening and closing hole (220) vertically penetrated on the manhole cover (200) and formed between the outer side of the elastic ring (210) and the outer circumference of the manhole cover (200); a guide (230) installed on the bottom of the manhole cover (200) along an extension line connecting the opening and closing hole (220) at the center of the manhole cover (200); and a slider (240) having a latch (242) engaged with the hanging protrusion (110) at a longitudinal end on one side, wherein the longitudinal end on the other side is formed in a predetermined length to be elastically supported on the elastic ring (210). The slider (240) has an unlocking hole (246) at a position corresponding to the opening and closing hole (220). So, the slider (240) is supported on the bottom of the manhole cover (200) by the guide (230) and moves forward and backward. So, the opening and closing structure for a manhole cover, using the elastic ring, can easily open and close the manhole cover at once and has a simple structure. 본 발명은 탄성링을 이용한 맨홀덮개 개폐 구조에 관한 것으로, 맨홀틀(100)의 내주면 상부에 중심을 향해서 수평방향으로 돌출형성된 걸림턱(110); 상기 맨홀덮개(200)의 직경보다 작은 직경으로 형성되어 맨홀덮개(200) 저면에 맨홀덮개(200)로부터 이탈하지 않으면서 휘어질 수 있도록 구비되는 탄성링(210); 맨홀덮개(200)에 상하 관통형성하되 탄성링(210) 외측과 맨홀덮개(200) 외주 사이에 형성되는 개폐공(220); 상기 맨홀덮개(200) 중심에서 개폐공(220)을 연결하는 연장선을 따라 맨홀덮개(200)의 저면에 구비된 가이드(230); 일측 종단에는 상기 걸림턱(110)과 맞물리는 걸쇠(242)가 형성되고 타측 종단은 탄성링(210)에 탄성지지되도록 소정 길이로 형성되며 상기 개폐공(220)과 대응되는 위치에 잠금해제공(246)이 형성되어 상기 가이드(230)에 의하여 맨홀덮개(200) 저면에 지지되고 전후이동되는 슬라이더(240);를 포함하여 구성되어 구조가 간단하고 한번에 용이하게 맨홀덮개를 개폐할 수 있도록 한 탄성링을 이용한 맨홀덮개 개폐 구조에 관한 것이다.
Bibliography:Application Number: KR20180154277