Weldable resilient hinge

摘要

The hinge (19) for the spectacle side frames is attached to a shaped fitting (21). It has a clip fastening in a recess (9) in the main frame. A spring (5) is clamped into the recess and is held in compression between the shaped fitting and the end of the recess. The shaped fitting is wedged into a tapering recess by the spring. The spring is a coil type or has a meandering shape. For a coil spring it is located over a stud extension of the shaped fitting.