| 摘要 |
PROBLEM TO BE SOLVED: To provide a connection structure capable of preventing a rubber hose from being extracted and a fluid from leaking and enabling the easy and complete insertion of an inner tube onto the rubber hose by making complete the insertion of the inner tube onto the rubber hose as a pipe joint or a joint for connecting various devices. SOLUTION: In this connection structure between the joint and the rubber hose formed by inserting the rubber hose onto an inner tube extending from the joint and covering the outer surface of the rubber hose by an outer tube extending from the joint side, spiral projected line bodies with specified pitches are formed on the outer surface of the inner tube, spiral recessed grooves are formed in the inner surface of the inserted rubber hose by screwing a tool having the spiral projected line bodies of the generally same shape as the projected line bodies into the rubber hose under heating, and the projected line bodies are threaded to the recessed grooves on the rubber hose side. COPYRIGHT: (C)2005,JPO&NCIPI
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