| 摘要 |
PURPOSE: A glasses leg folding and unfolding apparatus is provided to maintain a folded or unfolded state continuously by making a folding operation conducted only by a force of a user. CONSTITUTION: A glasses leg folding and unfolding apparatus comprises a glasses frame(10), a glasses leg(20), a fixing pin(15), and a spring(13), and keeping grooves(24). Fixing protrusion pieces(11,21) are adhered at a folding and unfolding portion of the glasses frame(10) and the glasses leg(20), and are hinge-connected by the fixing pin(15). The keeping grooves(24) are formed at a cylindrical surface(23) which is located at an end of a connection portion(22) of the fixing protrusion piece(21). A fixing ball(14) is selectively inserted in the keeping grooves(24) elastically supported by the spring(13) inside a connection groove(12) of the fixing protrusion piece(11).
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