CONNECTING LOOP-LOCK FOR EYEGLASS FRAMES AND TEMPLES Russian patent published in 2020 - IPC G02C5/14 

FIELD: optics.

SUBSTANCE: invention relates to spectacle optics, specifically to screwless joints of arches and spectacle holder. Disclosed connecting loop lock for spectacle holder and arches is formed by end element of holder made of two detachable parts, in each of which there are rectangular holes, end element of L-shape arch, coupler made in form of rectangular plate with two holes, having identical shape with holes of end element of holder, two lugs, made in form of flat elements of complex shape, spring, made in form of bent plate U-shaped, one of ends of which is truncated with two sides, and the other end is provided with two rectangular protrusions for fastening the spring on the ears, and an eccentric made in the form of a hook-shaped element with a protrusion on the straight part for attachment in the central hole of the end arch element. At the same time on the short part of the end element of the arch there are three holes, and in the butt end of the short part there is a groove for placing the eccentric. Lugs have projections, with one of sides rectangular - for fixing in holes of tie and end element of holder, from adjacent side hook-shaped - for fixation in extreme holes of end element of arch. Eccentric is made in form of hook-shaped element with projection on straight part for fixation in central hole of end arch element.

EFFECT: technical result is obtaining a structure which combines a lens lock in a holder and a spring-loaded loop connecting the arc and the holder.

1 cl, 5 dwg