| 摘要 |
PROBLEM TO BE SOLVED: To provide the connecting structure of an air-conditioning duct, which is capable of achieving the reduction in a cost and weight while retaining the function of preventing the condensation of dew. SOLUTION: The connecting structure of an air-conditioning duct is constituted of an air-conditioning duct 2 and a connecting and engaging unit 1. In this case, the air-conditioning duct 2 is formed of a pair of half-divided tubular bodies 2A, consisting of a composite sheet material 2c1, prepared by superposing a solid sheet 2a1 on a foamed sheet 2b1 to integrate them in a half-divided tubular form having the foamed sheet at the outside, of the tube, while the tubular bodies are connected and fixed opposingly to provide a tubular body for a duct flow passage O and a flange unit 21 is formed at the connecting parts (m) so as to be projected outward in the radial direction of the tube. The connecting and engaging unit 1 is provided with a dovetail groove 14, capable of receiving the flange unit 21 of the air-conditioning duct 2 and a tubular part 11, capable of inserting the connecting duct unit 27 of the air- conditioning duct 2, which are formed on the same. The air-conditioning duct 2 is inserted into and fixed to the connecting and engaging unit 1 by engaging the flange unit 21 with the dovetail groove 14 under a condition that the base end part 211 of the flange unit 21 is compressed.
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