| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a piping connection structure which can be made compact. <P>SOLUTION: A connector 10 is formed cylindrical and configured in such a way that: a pipe body 50 is inserted into inside the cylinder of the connector from one cylindrical end thereof; the pipe body 50 is restrained while the cylinder top end part 51 of the pipe body 50 protrudes from the other end of the connector; and a diameter expansion part 42 of a resin tube 40 is fitted onto an outer circumferential surface of the connector from the other cylindrical end thereof to restrain the diameter expansion part 42. A seal member 30 is arranged in a space 60 which is located in the axial-direction outer side than the edge surface of the other end of the connector 10 and is surrounded by the edge surface of the other end of the connector 10, the outer circumferential surface of the pipe body 50 and the inner circumferential surface of the diameter expansion part 42 of the resin tube 40, the seal member 30 is diametrically held between the outer circumferential surface of the pipe body 50 and the inner circumferential surface of the diameter expansion part 42 opposite to the outer circumferential surface, thereby being sealed between the outer circumferential surface of the pipe body 50 and the inner circumferential surface of the diameter expansion part 42. Further, the inner circumferential surface of the connector 10 at the other end side thereof and the outer circumferential surface of the pipe body 50 are arranged while being abutted on each other or while having a clearance without interposing the seal member 30 therebetween. <P>COPYRIGHT: (C)2012,JPO&INPIT |
