| 摘要 |
PURPOSE:To eliminate the clatter between an endpiece and a temple by inserting an insertion piece which is punched with a circular hole approximately equal to the bore of a tube and is provided at one end of an endpiece between connecting pieces and press-fitting a metallic spring pin into the tube and the circular hole of the insertion piece. CONSTITUTION:A connecting piece 41 is provided in the lower inside position at one end of a temple 4 and a circular hole 41A is provided to the center of the piece 41. A tube 42 having the outside diameter slightly larger than the diameter of said hole is press-fitted into the hole. A connecting piece 43 is provided in the upper inside position at one end of the temple 4 in the form of facing the piece 41 at a specified spacing therefrom and is punched with a circular columnar groove 43A having the same diameter as the diameter of the hole 41A. The groove 43 is on the same line as the center of the hole 41A and a tube 44 which is formed of the same material as the material of the tube 42 and has the same diameter is press-fitted into the groove 43A. |
