| 摘要 |
PROBLEM TO BE SOLVED: To enable a pushing-in amount to be more finely adjusted than done in the prior art in a fixing mechanism constructed in such a way that a plurality of anti-loosening pieces function in a step-wise manner in response to a pushing-in amount.SOLUTION: A fixing mechanism 1B has a plurality of anti-loosening pieces 25. When a supporting column 21 is inserted into a hole, at least one of the anti-loosening piece 25 is hooked on or brought into pressure contact with an outlet side peripheral edge portion of the hole or an inner surface part of the hole to cause a force applied in a direction for preventing the supporting column 21 from being pulled out of the hole to be acted on the supporting column 21. In addition, the plurality of anti-loosening pieces 25 constitutes a plurality of rows 31, 32 extending along a protruding direction of the supporting column 21 and the anti-loosening pieces 25 included in each of the rows 31, 32 are arranged in row while being spaced apart in the protruding direction of the supporting column 21. In addition, in the first row 31 and the second row 32, positions of the anti-loosening pieces 25 included in each of the rows 31, 32 are displaced toward the protruding direction of the supporting column 21. |
