Hinge for doors or windows

A hinge for doors or windows comprising a fixed frame (1) and a movable sash (2) formed by section bars having at least one perimeter channel (3);

• the hinge (4) comprising at least:
• a fixed body (5) associated with the fixed frame (1), the fixed body (5) having a first axis (X1) of fixed articulation and a slot (6) made parallel to the axis (XC) of longitudinal extension of the fixed body (5);
• a movable body (7) connected to the movable sash (2);
• a first lever (8) having a first end articulated to the fixed body (5) about the first axis (X1) of fixed articulation, a second end articulated to the movable body (7), defining a second axis (X2) of articulation, and an intermediate zone;
• a second lever (9) having a first end articulated inside the slot (6) of the fixed body (5) to define a third axis (X3) of slidable articulation, a second end articulated to the movable body (7) defining a fourth axis (X4) of articulation and an intermediate zone;
• the first (8) and second (9) lever being articulated to each other in the corresponding intermediate zone to define a fifth axis (X5) of shared articulation;
• adjusting means (10, 11) for adjusting the first axis (X1) of articulation, characterised in that the adjustment means (10) comprise a slide (12) positioned on the fixed body (5) and having a first constraining portion for the first axis (X1) of articulation and a second portion associated with an adjustment axis (X12), parallel to the first axis (X1) of articulation, using a rotary element (13) configured for moving the slide (12) along the first horizontal axis (XR1) parallel to the axis (XC) of longitudinal extension of the fixed body (5), to vary the distance between the adjustment axis (X12) and the first axis (X1) of articulation in both directions along the first horizontal axis (XR1), in both directions;
• wherein a further slot (16) is formed on the second portion of the slide (12) with main length (L) transversal to the axis (XC) of longitudinal extension of the fixed body (5);
• the rotary element (13) having an asymmetric configuration and positioned inside the further slot (16);
• the rotary element (13) being articulated on the fixed body (5) to form the adjustment axis (X12) in such a way as to allow, using a relative rotation, variation of the distance between the adjustment axis (X12) and the first axis (X1) of articulation.