Pivot Hinge assembly and folding pivot door assembly using the same

摘要

A pivot hinge assembly for pivotably supporting a linking column that pivots in linkage with a door in a door opening, and a folding pivot door assembly having such a hinge assembly are disclosed. The pivot hinge assembly includes a pivot pin, an elastic member urging the pivot pin downwards, a pivot pin holder having a through hole including a lower section for supporting the pivot pin vertically slidably and an upper section for accommodating the elastic member, and a closure for closing the upper end of the through hole. The elastic member is arranged with its upper end abutting the closure and its lower end abutting an upper face of the pivot pin for urging the pivot pin downward into engagement with a dent in the upper end face of the linking column.