Elastic hinge structure for spectacle bars - includes members having respective mutually facing surfaces being on contrary adapted to fittingly join by abutting against each other when bar is brought into its position of widest possible divarication

摘要

The hinge structure comprises a bar (1) associated to a first member (12) provided with an axial seat (6) accommodating a spring (7) and a sphere (8). A second member (14) is integral with the structure of the spectacles. An end portion of such a second member is oriented towards the first member and has a cam-like contour (5). The first member is provided, in its respective end portion facing the second member, with a respective peripheral surface (15). The second member is provided, on its front portion facing the first member, of a respective surface (16). The surfaces are separated from each other when the bar is in a normally opened position and being on the contrary adapted to fittingly join by abutting against each other when the bar is brought into its position of widest possible divarication.