초록 ▼

A pipe joint is provided whereby fluid pipelines, such as exhaust pipes, or the like, can be connected hermetically, in such a manner that the relative angle therebetween can vary, while ensuring satisfactory manufacturing precision of the sealing surface of a ring-shaped sealing ring. In a pipe joi

A pipe joint is provided whereby fluid pipelines, such as exhaust pipes, or the like, can be connected hermetically, in such a manner that the relative angle therebetween can vary, while ensuring satisfactory manufacturing precision of the sealing surface of a ring-shaped sealing ring. In a pipe joint 1 for connecting a first fluid pipeline 2 and a second fluid pipeline 3 hermetically, in such a manner that the relative angle therebetween can vary, a ring-shaped sealing ring 4 comprising an inner circumference sealing surface 4b having a tapered shape expanding in diameter towards the open end thereof is provided in the connecting section of the first fluid pipeline 2, an outer circumference sealing seat 3a having a partially convex surface is provided in the connecting section of the second fluid pipeline 3, in a position confronting said ring-shaped sealing ring 4, and pressure connecting means 5 for causing the inner circumference sealing surface 4b of the ring-shaped sealing ring 4 and said outer circumference sealing seat 3a to contact under pressure, in a slidable fashion, is provided in a region extending across both said fluid pipelines.

대표청구항 ▼

[ What is claimed is:] [1.]1. A pipe joint for connecting a first fluid pipeline and a second fluid pipeline hermetically, in such a manner that the relative angle therebetween can vary, comprising:a first fluid pipeline having a connecting section;a second fluid pipeline having a connecting section

[ What is claimed is:] [1.]1. A pipe joint for connecting a first fluid pipeline and a second fluid pipeline hermetically, in such a manner that the relative angle therebetween can vary, comprising:a first fluid pipeline having a connecting section;a second fluid pipeline having a connecting section;a ring-shaped sealing ring produced by pressure forming a fine metal wire with a fire-resistant material, comprising an inner circumference sealing surface having a conical tapered shape expanding in diameter towards an open end of the first fluid pipeline, which is provided in the connecting section of the first fluid pipeline;an outer circumference sealing seat having a partially convex surface which is provided in the connecting section of the second fluid pipeline, in a position confronting said ring-shaped sealing ring when said first and second fluid pipelines are connected; andpressure connecting means for causing the inner circumference sealing surface of the ring-shaped sealing ring and said outer circumference sealing seat to contact each other at an area of contact, said contact being under pressure, said area of contact changing in a slidable fashion during varying of said relative angle, said contacting pressure being provided in an elastic manner in a region extending across the connecting sections of both said first and second fluid pipelines.