| 摘要 |
PROBLEM TO BE SOLVED: To provide a snap, which has a structure requiring different force levels for fastening and unfastening, i.e., a structure easy to fit and hard to escape. SOLUTION: A contact surface 11 of a snap 10 is formed with a protrusion portion 12. A spring material 30 is disposed so as to project from a side wall portion of the protrusion portion 12 and extend in the longitudinal direction of the protrusion portion 12. Inclined parts formed on both sides of the tops of the projection parts of the spring material 30, have gentle inclinations on the side of the top end of the protrusion portion 12. A contact surface 21 of a snap 20 is formed with an insertion hole 22 of the protrusion portion 12, and a peripheral wall portion of the insertion hole 22 is formed with a groove portion 25 fitted with the spring material 30. COPYRIGHT: (C)2004,JPO
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