Patent ID: 7896490

Claim:
An eyeglass structure comprising: a frame whose left and right ends each have a positioning slot, respectively; two hinge members, each positioned in and pin-joined to the respective positioning slot and capable of lateral rotation, wherein each hinge member has a connector section at one end; said connector section has a through opening and a locking piece substantially covering said through opening, with the locking piece being partially joined to said connector section, with a gap maintained between and locking piece and said through opening when the locking piece is in a locking position and with the locking piece compressible into the through opening in a compressed position; and two temple members, each having a chamber at a front end for detachably receiving the hinge member, wherein each chamber has a side opening on an inner side; wherein the locking piece is received in the side opening in the locking position and is located outside the side opening in the collapsed position; wherein first saw teeth are provided along a back edge of each hinge member; second saw teeth are provided along a back wall inside each chamber; and said first and second saw teeth engage with each other when the hinge member is extended into the chamber of the temple member, allowing said temple member to tilt upward or downward around said hinge member.