| 摘要 |
PROBLEM TO BE SOLVED: To provide a lid for an underground structure capable of simply separating a lid main body from its receive frame which are connected by a hinge fitting as required and preventing the separation of them when the lid main body is opened and closed. SOLUTION: The receive frame 1 and the lid main body 3 fitted into an opening part 2 on its upper face are mutually connected by the hinge fitting 4. The hinge fitting 4 consists of a connection plate 5 whose upper part is connected with a rear surface of the lid main body 3 and a receive seat 6 with which a lower part of the connection plate 5 is connected. A pair of support shafts 12, 12 are formed on both sides of one end part of the receive seat 6, and a mounting part 13 in which shaft receive holes 14 for inserting the support shafts 12 are drilled by opposing mutually is formed on an inner wall face of the receive frame 1. In particular, the receive seat 6 is constituted by connecting a pair of right and left divided bodies 15A, 15B mutually by a connection member. Each divided body 15A, 15B has either of the support shafts 12, 12, respectively, and can be attached and detached to the mounting part 13 individually. Consequently, the receive seat 6 can be easily removed from the mounting part 13 as required to separate the lid main body 3 from the receive frame 1.
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