| 摘要 |
PROBLEM TO BE SOLVED: To provide a coupling structure for ducts for an air-conditioner capable of coupling the ducts simply and keeping the air-tightness of the coupling part certainly. SOLUTION: This structure comprises a duct 5 formed in a single piece with a casing 2 and forming the open edge by a slope 8, and another duct 6 configured so that the duct 5 is inserted into its opening 9 and the inner wall of the opening abuts to the slope 8 in tight attachment, and further a lock part 12 is provided to hold the ducts 5 and 6 in the coupled condition. Accordingly if the duct 5 is inserted by pressure into the opening 9 of the other duct 6 when the ducts 5 and 6 are to be coupled, the open edge of the duct 5 abuts in tight attachment to the opening inner wall 10 of the other duct 6 and also a projection 13 is fastened at a fastening hole 14, so that the ducts 5 and 6 are held in the condition coupled air-tightly. COPYRIGHT: (C)2007,JPO&INPIT
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