| 摘要 |
PROBLEM TO BE SOLVED: To enhance insertion properties and sealability in the connection of a rubber hose. SOLUTION: The connection terminal part 11 of a rubber hose 10 is set to a shape similar to that of the joint part 21 of a pipe 20. The joint part 21 has a neck part 22 and a bulge part 23 and an annular groove 13 similar to the bulge part 23 is provided to the connection terminal part 11 and the part on the leading end side of the annular groove 13 of the connection terminal part 11 is set to an introducing part 17 and the diameter of leading end opening part thereof is made larger than the outer diameter of the leading end of the bulge part 23.
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