| 摘要 |
PROBLEM TO BE SOLVED: To be able to accommodate the size differences between ducts 4 and 5 and a vehicle body 1 due to the variation therebetween and to increase the cross-sectional area of the ducts 4 and 5. SOLUTION: Grommets 4b, 5b, and 5c are formed so as to correspond to each of connecting ends of both of the ducts 4 and 5, thereby providing an engaging structure where the grommets 4b, 5b, and 5c allow both of the ducts 4 and 5 to move in the insertion direction by a predetermined distance S. As a result, the size differences between the ducts 4 and 5 and the vehicle body 1 due to the variation therebetween can be accommodated by the movement (slide) in the insertion direction of a connection section J between the ducts 4 and 5 and a space between the ducts 4 and 5 and the vehicle body 1 is filled, thereby allowing the increase in the cross-sectional area of the ducts 4 and 5.
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