| 摘要 |
<P>PROBLEM TO BE SOLVED: To attain a press fixing amount according to an erected state of a door body. <P>SOLUTION: A watertight structure is between a door body 2 and a side part door stop 3 of a floating body type flap gate 1 installed at an opening or a gateway and provided with the door body 2 whose distal end side is erected and swung with a proximal end side as a rotation center C within a plane in a height direction in the direction of flowing-in water so as to shut off the opening or the gateway when water flows in. In order to obtain a required press fixing amount according to the erected state of the door body 2, an interval between side part watertight rubber 4 attached to a side face part of the door body 2 and a surface 3a of the side part door stop 3 is made different in each area. Since the required press fixing amount according to the erected state of the door body is obtained, useless slide resistance by the watertight structure is reduced, and it becomes easy to erect the door body, a floating operation of the door body in an inflow initial period when water starts to flow in becomes fast, flow-in of water is prevented, and water leakage is effectively prevented. <P>COPYRIGHT: (C)2013,JPO&INPIT |
