Patent ID: 7591047

Claim:
A bidirectional pivot structure, comprising: at least one horizontal rotation axis module; a rotation switching device having at least one wedging portion, and at least one fixing portion pivotally connected to the horizontal rotation axis module; and a vertical rotation axis module having a hole fitted with the rotation switching device, and further comprising: an aligning element having at least one guide rail disposed at the periphery of the hole, at least one position limiting protrusion disposed on the side opposite to the hole, and at least one positioning concave protrusion; a rotation position limiting element having at least one first fixing protrusion, at least one position limiting convex protrusion and at least one position limiting arc, wherein the first fixing protrusion is disposed at the periphery of the hole and wedged with the wedging portion of the rotation switching device, and the position limiting convex protrusion slides in the guide rail of the aligning element, and the position limiting arc is matched with the position limiting protrusion of the aligning element; a stabilizing element having at least one second fixing protrusion, at least one positioning convex protrusion and at least one stabilizing protrusion, wherein the second fixing protrusion is disposed at the periphery of the hole and wedged to the wedging portion of the rotation switching device, and the positioning convex protrusion fits to the positioning concave protrusion of the aligning element, and a stabilizing nose is engaged with the aligning element to make the stabilizing element align with the aligning element; a flexible element for providing a flexible margin with stabilizing element to sheathe the stabilizing element onto the rotation switching device; and a locking element having at least one screw and a fixing plate, and the screw securing the fixing plate with the rotation switching device, so that the rotation switching device and the vertical rotation axis module are integrated as a whole, and the fixing plate includes a through hole corresponding to the hole.