| 摘要 |
PROBLEM TO BE SOLVED: To provide a fastener with small insertion load of a pin and secure the sufficient drawing power. SOLUTION: A guide part 6 of the pin 3 is classified in the first guide part 6a and the second guide part 6b, and a vertical angle of the second guide part 6b is set up in 5 to 25 degree besides a vertical angle of the first guide part 6a is set up in 30 to 65 degree. Hereby, the sufficient drawing power can be generated with smaller insertion load of the pin 3 even if the stroke quantity of the pin 3 can not be extended to the conventional fastener due to the restriction in the length of an axial part of the pin 3. COPYRIGHT: (C)2006,JPO&NCIPI
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