| 摘要 |
A pipe connecting structure is provided to prevent separation or torsion between connected pipes and to obstruct leakage by coupling a pipe connecting member to a first pipe with strong force and by pressing a seal packing perfectly. A pipe connecting structure comprises the followings: a pipe connecting member(1) formed with a screw coupling unit and a first pipe connecting unit(14) expanding a diameter at a lower portion, and a second pipe connecting unit(15) at an upper portion; an expanding protrusion pipe(2) fitting closely to a pipe inserting hole of a first pipe(P1) by expanding when inserted outward to the first pipe connecting unit of the pipe connecting member; a pressing cover(3) pressing a seal packing(F) and the first pipe, to get sticking and sealing force; a locking nut(4) coupling the pipe connecting member to the first pipe by pressing expanding protrusion pipe and the pressing cover. The pipe connecting member is coupled to the first pipe by inserting the pipe connecting member assembled with the expanding protrusion pipe to the pipe inserting hole of the first pipe, assembling the pressing cover with covering the expanding protrusion pipe and the seal packing, screwing the locking nut to press the seal packing with the pressing cover and to expand the expanding protrusion pipe.
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