Hinge having an embedded safety switch

1) Safety hinge, apt to constrain a door moving with respect to a fixed frame, of the type consisting of two main wing-shaped constituent members (1, 2) having a mutual-engagement area (3) consisting of loops (1, 2a) interconnected by means of a small shaft (4), with a first one of said wings (1) a switch body (7) and a top loop (1b) apt to the extension of the mutual-engagement area (3) being associated and connected to said switch body (7) by a channel (10), said switch body (7) housing a microswitch (11) which has an appendix (11a) housed in said channel (10) on the top of which peg-like means (12) for the actuation of the switch project, wherein within said loop (1b) a bush (13) is arranged, constrained to the movement by a second one (2) of said wings, said bush (13) having, along an outer annular crown (13b) thereof, a groove (13c) for the housing of said peg-like means (12) in the home position of said microswitch (11).