(57) Described is a hinge for doors and windows comprising a fixed frame (1) and a mobile
frame (2) whose profiles form respective longitudinal fastening grooves (C1, C2) each
comprised of a pair (3, 4) of facing upturned L-shaped protrusions defining an upper
longitudinal opening (5) whose width (LA) is defined by the distance between the transversal
sections (3a, 4a) of the L. The hinge (6) comprises: a first and a second hinge body
(7, 10) with a first and second flap (8, 11) which can be associated, through respective
first and second fastening means (9, 12), with the grooves (C1, C2); a hinge pin (13)
defining the axis of rotation (Z); the first and second fastening means (9, 12) each
comprise a pair of screw elements (14) inserted into the flaps (8, 11) and operating
on respective stop-lock elements (16) acting on the protrusions (3, 4); each stop-lock
element comprising a first, flat base (18) having a main dimension of extension (D18)
that is greater than the width (LA) of the upper opening (5) and a second, upper prismatic
portion (19), having two opposite inclined walls (19a, 19b) adapted to make contact
at least with the front ends of the transversal sections (3a, 4a) of the respective
longitudinal grooves (C1, C2).
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