| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide the hose connection structure that does not need the blazing of a nipple with a metal tube, there is no fear of oil leakage even in the high temperature atmosphere, there is also no fear of rusting even if it gets wet by the raining water and furthermore at low cost. <P>SOLUTION: Besides a bulge part 21 and the first spool part 22 are formed in the order from the front edge side on the removal part of the rust-preventive coating layer 11 of the metal tube 1 that forms the rust-preventive coating layer 11 of the polyamide resin on its outer circumference, a hose connection structure is composed of a nipple part 2 that makes the spool part 23 form on the part having the rust-preventive coating layer 11 of the metal tube 1 and a caulking metal fitting 3 that is caulked by inserting it at the edge of a hose 4 making this nipple part 2 insert into the second spool part 23 without contact with the nipple part 2 to connect to the caulking metal fitting 3. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
