| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve accuracy in attachment of a branch duct of a flexible duct to a main duct.SOLUTION: A duct connecting part 30 is arranged at a communication hole 18 in a main duct 10 of a flexible duct 1. A branch pipe 31a of a branch member 31 of the duct connecting part 30 is protruded to the outside of the main duct 10, and connected to the branch duct 20. An attachment part 31b is arranged at a base end part of the branch pipe 31a. The attachment part 31b is inserted between a heat insulation layer 13 and a core material 11, and directly abuts on the core material 11. Furthermore, a fixed member 32 is applied to an internal peripheral face of an inner membrane body 12, and the attachment part 31b and the fixed member 32 are connected to each other by connecting means 34 with the inner membrane body 12 and the core material 11 sandwiched therebetween.</p> |
