| 摘要 |
PROBLEM TO BE SOLVED: To perform fitting and fitting release by simple operation. SOLUTION: A fitting structure includes a first fitting part 13 with an insertion hole 13a and a second fitting part 32 inserted in the insertion hole 13a and fitted in the first fitting part 13. In the first fitting part 13, a first groove part 21 corresponding to a part with a center angle around a center axis A2 in a female screw less than 90°is formed only in a first area 13c corresponding to a part with a center angle around a center axis A1 in the inner peripheral surface 13b of the insertion hole 13a less than 90°, and a second groove part 22 corresponding to another part with the center angle around the center axis A2 in the female screw less than 90°, and moreover, opposed to the first groove part 21 is formed only in a second area 13d corresponding to another part with the center angle around the center axis A1 in the inner peripheral surface 13b of the insertion hole 13a less than 90°, and moreover, opposed to the first area 13c. In the second fitting part 32, a male screw 41 engaging with the first groove part 21 and the second groove part 22 is formed throughout the whole circumference of the outer peripheral surface 32b. COPYRIGHT: (C)2011,JPO&INPIT
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