| 摘要 |
PROBLEM TO BE SOLVED: To provide a manhole joint capable of flexibly connecting a manhole with a pipe with a large deformation angle and preventing the breakage of a connection part and the destruction of watertightness even if it is greatly deformed due to pressure and vibration caused by a person passing on a road and an automobile and freezing phenomenon in a cold district. SOLUTION: This manhole joint is constituted such that it consists of a substantially cylindrical socket collar, a ringlike elastic support body, a rubber ring, and a saddle in which a cylindrical part is erected in an opening part of a platelike part having a cylindrical joint main body and a substantially circular opening part, the elastic support body and the rubber ring are arranged substantially in parallel at outer periphery of the socket collar, the joint main body is externally inserted into the socket collar so that one end part thereof comes into contact with the elastic support body and the other end part thereof comes into contact with the rubber ring, and the joint main body is fitted into the cylindrical part of the saddle.
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