| CPC F16L 37/244 (2013.01) [F16L 37/24 (2013.01); F16L 2201/10 (2013.01)] | 14 Claims |

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1. A quick coupling set, comprising:
a first plug, the first plug comprising a first plug body, a first driving part, and a first rotation-restraining structure, the first driving part and the first rotation-restraining structure being disposed on the first plug body, the first driving part being movably disposed on the first plug body, the first rotation-restraining structure being disposed on the first driving part, the first plug comprising a limitation structure, the limitation structure comprises a limiting post and a limiting slot, one of the limiting post and the limiting slot being disposed on the first driving part, the other of the limiting post and the limiting slot being disposed on the first plug body, the limiting post relatively sliding in the limiting slot to limit rotation or axially sliding of the first driving part relative to the first plug body; and
a first socket, the first socket comprising a first socket body and a second rotation-restraining structure disposed on the first socket body, the first socket and first plug structurally fitting each other, the first rotation-restraining structure being restrained by the second rotation-restraining structure to rotate relative to the second rotation-restraining structure in a first rotation direction.
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