| 摘要 |
PURPOSE: A coupling unit having an anti-loose unit is provided to prevent a bolt and nuts from loosing by fitting the coupling unit composed of the bolt and the nuts easily. CONSTITUTION: A coupling unit having an i-loose unit(100) comprises a bolt(120), nuts(140), and an anti-loose unit(160). The bolt and the nuts generate fastening force by screwing each other. The anti-loose unit coupled with the bolt and one side of the nuts prevents the bolt and the nuts from loosing. A receiving groove(162) formed on one side of the bolt has a polygon shape.
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