| 摘要 |
PROBLEM TO BE SOLVED: To provide a clasp that can be easily and quickly removed by a single push even when it is removed in an invisible range such as behind the head or the like. SOLUTION: The clasp 1 is made up of a connecting convex portion 2 having a cam and a cylindrical connecting concave portion 3 having a spring in the interior. The connecting convex portion 2 is composed of a rotating portion 21 having an engagement protrusion 23 on the periphery and a holding portion 22 turnably holding the rotating portion 21. The connecting convex portion 3 is a cylindrical body having an opening 31 on the side into which the connecting convex portion 2 is inserted and has a spring 32 at the end opposite to the opening 31. Engagement grooves 33 engaging with the engagement protrusion 23 or fixed protrusions 25 are provided in the vicinity of the opening 31 along the inside periphery of the connecting concave portion 3. COPYRIGHT: (C)2005,JPO&NCIPI
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