| 摘要 |
PROBLEM TO BE SOLVED: To prevent the detachment of a fastener for fixing a piece mat further laid on an automobile carpet. SOLUTION: A fastener 1 for fixing a piece mat is provided with a push pin 3 with one-way parts 4, 4..., and the push pin 3 is pushed into a hole 22 of a reinforcing cross member 21 of an automobile floor steel plate 20. The more external force is applied to the push pin 3, the deeper the push pin 3 is pushed into a space in the cross member 21, so that the fastener 1 does not come off the steel plate 20.
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