Patent attributes
A hidden hinge includes a first fixing assembly, a second fixing assembly, a first rotating part and a second rotating part, a first bearing frame, a second bearing frame, and at least one torque member. The first rotating part and the second rotating part are rotatably disposed through the first fixing assembly and the second fixing assembly. The first rotating part and the second rotating part are parallel to each other and respectively have a first teeth portion and a second teeth portion. The first teeth portion and the second teeth portion are arranged in a vertically-staggered manner. The first bearing frame is slidably disposed on the first fixing assembly and has a first rack portion engaged with the first teeth portion. The second bearing frame is slidably disposed on the second fixing assembly and has a second rack portion engaged with the second teeth portion. The at least one torque member is sleeved around the first rotating part and the second rotating part.
