| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve workability by a method wherein a longitudinally continuous cut part is formed in a hollow cylinder body having a longitudinally bendable bellows part, a peripheral wall is spread and a refrigerant pipe is contained through the cut part. SOLUTION: The whole of a protection duct 1 is formed of synthetic resin and provided with a longitudinally bendable bellows part 12 and comprises hollow bodies 11 with connection parts 13, capable of being connected to a protection cover, provided at both ends of the belows part 12 and a longitudinally continuous cut part 14 is formed in the central part of a bottom wall. The protection duct 1 deforms the peripheral wall of the hollow cylinder body 11 toward outside through its own elasticity and a refrigerant pipe for an air conditioner is contained in through a spread cut part 14. In this case, even when the refrigerant pipe is arranged in a curved state through free bending of the bellows part 12, the refrigerant pipe is contained and protected so as to cope with a situation. Further, the cut part 14 is formed in the bottom of the hollow cylinder body 11, the bottom is arranged with the bottom brought into contact with the wall surface of a building and penetration of rainwater and powder dust to an internal part is prevented from occurring.</p> |
