The present invention is an elastic miniaturized hinge for flexible temple elements or “flex temples” with a box provided with at least a guiding zone for the connection of the articulation to a seat joined to the front of the glasses. The hinge includes a box, along the temple or lug of the glasses, and a housing along the box containing the articulation trolley. The articulation trolley includes at least one spring, contained inside the box, while the portion that includes the articulation exits from the front end of the box. Peripherally with respect to the opening at the front end of the box, at least one guiding zone is obtained, including a cheek of a protrusion longitudinally projected. The cheek is parallel and orientated toward at least one of two lateral faces of the articulation. Furthermore, the protrusion is provided with a guiding seat with an opening.