Flexible joint assembly with improved airtightness and insulation

摘要

The present invention relates to a flexible joint of a sprinkler, and in particular, a spiral portion 36 for improving the flow of water and a straight pipe portion 37 for reinforcing strength is formed between the spiral portion 36, and the spiral portion ( A flexible joint 30 having a cap fixing part 32 on both left and right sides of the 36; A catching protrusion 38 having a ring inserting groove 39 into which the leakage preventing ring 80 is fitted to prevent leakage of water on the outer surface of the end of the cap fixing part 32 of the flexible joint 30; Upper and lower insulating caps 40 and 45 coupled to each other by being inserted into the locking grooves 47 for insulation on the outer surface of the cap fixing part 32 of the flexible joint 30; A bent portion 72 is formed on the outer circumferential surface of the locking protrusion 38 to be engaged with the locking jaw 54 of the coupling nut 50 into which the screw groove portion 52 is fitted, and the fitting hole 74 has a cap fixing portion 32. Bar is a flexible joint combination with improved airtightness and insulation, which is inserted into the outer circumferential surface of the coupling member and insulates the coupling nut 50 and the flexible joint 30, and the flexible joint is alternately repeated with the spiral part and the straight pipe part. Formed to improve water flow and reinforce strength, and install an insulating cap and insulation member on the cap fixing part of the flexible joint to prevent the flexible joint from being damaged by electric shock, thereby improving airtightness and insulation to be.