| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel ditch cover capable of not only easily and smoothly performing opening and closing operation of the ditch cover but also surely preventing jumping-up of a cover member in a closing state. SOLUTION: This ditch cover is composed of a frame member 11 having opposed parallel two side edge parts 12, and the cover member 20 stored inside the frame member. A guide part 13 is formed along the edge on the inside surface side of the side edge parts of the frame member. The cover member is divided into a front half part 21 and a rear half part 25 having the length for substantially dividing the length of the side edge parts into two parts. The front half part and the rear half part are bendably connected via a hinge part H so that at least the hinge part becomes a crest part. A rear end part 26 of the rear half part is pivoted on the side edge parts via shaft parts 15 and 16. A front end part 22 of the front half part has an engaging part 23 for moving by fitting to the guide part of the side edge parts. COPYRIGHT: (C)2005,JPO&NCIPI
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