Pipe coupling structure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jan 16, 2018
Issued Date -
N/A
app pub date -
Nov 17, 2015
filing date -
Aug 18, 2015
priority date (Note) -
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Abstract
A pipe coupling structure is capable of coupling pipes together without driving a screw and using a tool. An example pipe coupling structure includes a first engagement portion formed in an end portion of a first air-conditioning duct. The first engagement portion extends in the circumferential directions and protrudes inside of the first air-conditioning duct. A second engagement portion is formed in an end portion of a second air-conditioning duct. The second engagement portion extends in the circumferential directions and protrudes outside of the second air-conditioning duct. When the end portion of the second air-conditioning duct is inserted into the end portion of the first air-conditioning duct, the second engagement portion climbs over the first engagement portion, and thereby the first engagement portion and the second engagement portion engage each other.
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