| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a duct connection structure reduced in cost.SOLUTION: In a duct connection structure of the present invention, in the inner side of an end part of a sticking duct 20 formed by fixing a groove-shaped member 21 having a downward groove opening on an upper surface 11M of a ceiling interior material 11 of a vehicle, an end part of a blow duct 30 blow-molded in a cylindrical shape is fitted to be coupled. Side clearances 25 and 25 sandwiched between the ceiling interior material 11 and a folded curved part 24 formed on the base end side of a flange part 22 of the groove-shaped member 21, are formed in both side parts of the sticking duct 30. Side projection parts 33 and 33 overhanging into the side clearances 25 and 25 are provided in both-side lower end parts of the blow duct 30, and a parting line PL of a blow-molding mold 50 is arranged on edges of these side projection parts 33 and 33.</p> |
