Ducting system

Abstract

The present invention provides a ducting device that allows the end of one duct to be stably inserted into the end of another duct. [Solution] The duct device 1 comprises a hollow duct 2 and another hollow duct 3, with the end of the first duct 2 being inserted into the end of the other duct 3 in a predetermined direction and connected. At least one contact portion 47 is formed on the outer surface of the end of the first duct 2 along a predetermined direction, which abuts against the inner surface of the end of the other duct 3. The end of the first duct 2, including the contact portion 47, strongly interferes with the inner surface of the other duct 3.

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