公开(公告)号：JPH02272420A

公开(公告)日：1990-11-07

申请号：JP4911990

申请日：1990-02-28

Applicant: ESSILOR INT

Inventor： BERUNAARU ROSUPIISU

IPC: G02C5/14 ,  G02C5/20

Abstract: PURPOSE: To make it possible to tightly fix the frame of glasses during the period of sports activity by forming two edge parts having curves one of which is projected out from the other on an end part of a chord of the glasses frame on both the sides of a rotational axis line. CONSTITUTION: The chord of a glasses frame has two independent parts, i.e., a main part 12 and an end part 13. The end part 13 is rotatably fitted to the main part 12 on the opposite side of a hinge member. The end part 13 is provided with two reversed edge parts 17, 18 on both the sides of rotational axis line formed by the one end part of a core 15. When a user is going to execute sports activity, the glasses can be prepared only by rotating respective end parts by 180 deg.. Thus each chord of the frame forms a hook capable of depressing the lower part of an ear bending as a nipple-like shape.