Biaxial hinge, water-stop door equipped with the biaxial hinge, and door mounting method using the biaxial hinge

摘要

PROBLEM TO BE SOLVED: To provide a two-shaft hinge that can change an existing door body into a cut-off door having a cut-off function, with a low introduction cost.SOLUTION: A two-shaft hinge 2 is configured by separating an intermediate hinge 5 so that it can be pivotally supported to be freely insertable/extractable with respect to a frame side shaft 32, in the state of being capable of being bent and rotated like a free end against resiliency of a torsional spring 61 on a non-regulation side in such a manner that a door side shaft 42 serves as a fulcrum.SELECTED DRAWING: Figure 2