| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of a connection part of a pipe and a hose capable of connecting the pipe to the hose firmly without causing a leakage of fluid by merely inserting the pipe into the hose. SOLUTION: An endless annular locking wall 12 whose outer periphery is fixed and an endless annular partition wall 14 (14a, 14b) are provided on an inner periphery face of an end part on the connection side of a hose 10, a groove 12 is provided at outer periphery of a pipe at a corresponding position of an inner peripheral face 12a of the locking wall 12 when a pipe 20 is inserted into the hose 10, and the locking wall 12 and the groove 22 are mutually fitted when the hose 10 is connected to the pipe 20 to connect the pipe 20 to the hose 10 firmly. The partition wall 14(14a, 14b) is formed by protruding on the central side in the direction of length of the hose 10 in the hose used when pressure in a pipeline is positive pressure in one example and is pressed against outer periphery of the pipe 20 by pressure of fluid in the pipeline as shown by an arrow mark to improve the airtightness or liquid-tightness of a connection part 1.
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