An interfering assembly of a hinge includes a male element including a first raised portion and a second raised portion, and a female element defining a through hole. A slot apart from a center of the through hole is defined in the female element. An inner ring and an outer ring are formed beside the slot. The inner ring defines a first depressed portion engaged with the first raised portion, and the outer ring defines a second depressed portion engaged with the second raised portion. Widths of the inner ring and the ring slot are gradually varied. During rotation of the rotating member, the first and second raised portions are slid out from the first and second depressed portions, respectively, and then in frictional engagement with the inner and outer rings, together with partial portions of the first and second raised portions covering the slot, correspondingly.