| 摘要 |
PROBLEM TO BE SOLVED: To provide a clasp having a strong structure without a movable member and readily connected/disconnected despite a reduced size. SOLUTION: The clasp is composed of a first member 10 having an engagement port 14 communicating with an engagement hole 12 and a C-shaped opening, and a second member 20 having a thin-walled portion 25 having a size less than the opening size of the engagement opening 14 of the first member 10 and having a ring shape. A member 11 having an eyeglass frame shape and composing the first member 10 and a flat annular member 21 composing the second member 20 include thin-walled portions 15 and 23 at four corners, respectively. The respective adjacent thin-walled portions 15 and 23 are positioned on the surfaces of the members so as to be opened in different directions. The thin-walled portion 23 is formed so as to have a thickness exceeding the opening size of the engagement opening 14. COPYRIGHT: (C)2007,JPO&INPIT
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