FLOATING SUPPORT STRUCTURE

PROBLEM TO BE SOLVED: To obtain a floating support structure in which the number of kinds of components and the number of components are reduced. SOLUTION: In a floating support structure, a main part is floating-supported with reference to a frame 110 via a plurality of dampers 130 composed of an elastic body, and a cover 140 which opens and closes the main part is supported by the frame 110 so as to be freely rotatable. In this case, the dampers 130 are fitted, from the outside, to two mutually opposite side face plates 113, 114 of the frame 110. Parts which are situated at the outside of the frame 110 are pressed by damper pressure plates 131 which are fixed to the frame 110. Tensile coiled springs 144 which urge the cover 140 to one direction are stretched and installed between the cover 140 and the damper pressure plates 131. The damper pressure plates 131 are formed to be symmetric in a direction along respective side plates of the frame 110. Spring hook parts 131d which support ends, on one side, of the tensile coiled springs 144 are formed in central parts in the direction.