RESIN HOSE CONNECTING STRUCTURE.

摘要

A resin hose connecting structure which consists of a resin hose (10) composed of a blow molded hose body (12) an end portion of which is molded out of a hard thermoplastic resin, and a joint member (14) molded unitarily with the end portion of the hose body (12) out of a soft thermoplastic resin and having an inner circumferential engagement surface (22) which is coaxial with the hose body (12), and a mate tube body (24) formed out of a material which is harder than the above-mentioned soft thermoplastic resin, and having at a front end portion thereof a ring contacting wall the outer diameter of which can be reduced, and at the portion thereof which is behind the ring contacting wall an outer circumferential engagement surface engageable with the inner circumferential engagement suface of the resin hose (10), the ring contacting wall of the mate tube body (24) engaging the end portion of the resin hose body (12) with the outer circumferential engagement surface fitted to the inner circumferential engagement surface (22) to fixedly connect the resin hose (10) and mate tube body (24) together. This enables the degree of integration of the mate tube body (24) with hose body (12) to increase, and the joint member (14) is less likely to involve problems posed by the contact of a fluid flowing therein with the inner surface thereof.