PIPE JOINT

To provide a pipe joint which makes an inner cylindrical body hard to be dropped from a pipe while maintaining a cut-off performance between a seal member and the pipe.SOLUTION: A pipe joint 1 comprises: a cylindrical joint body 10 in which an accommodation recess 10b is formed on an inner periphera...

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Bibliographic Details
Main Author HAGINO TOMOKAZU
Format Patent
LanguageEnglish
Japanese
Published 13.08.2020
Subjects
BLASTING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
JOINTS OR FITTINGS FOR PIPES
LIGHTING
MEANS FOR THERMAL INSULATION IN GENERAL
MECHANICAL ENGINEERING
PIPES
SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:To provide a pipe joint which makes an inner cylindrical body hard to be dropped from a pipe while maintaining a cut-off performance between a seal member and the pipe.SOLUTION: A pipe joint 1 comprises: a cylindrical joint body 10 in which an accommodation recess 10b is formed on an inner peripheral surface; a seal member 15 which is accommodated in the accommodation recess and brought into contact with an outer peripheral surface of a pipe 101 disposed inside of the joint body; and a resin inner cylindrical body 35 supporting the pipe from the inside in a radial direction. The inner cylindrical body includes: a cylindrical part 36 disposed inside of the pipe; a flange part 37 which is provided on an outer peripheral surface of an end of the cylindrical part and locked to an end face of the pipe in an axial direction of the joint body; and a projection 38 which is provided on an outer peripheral surface of the cylindrical part, extends from the flange part to the seal member in the axial direction and is brought into contact with an inner peripheral surface of the pipe. A length L1 of the projection in the axial direction is shorter than a distance L2 between the flange part and the seal member in the axial direction.SELECTED DRAWING: Figure 1 【課題】シール部材とパイプとの間の止水性を維持しつつ、パイプから内筒体が脱落し難くした管継手を提供する。【解決手段】管継手１は、内周面に収容凹部１０ｂが形成された筒状の継手本体１０と、収容凹部に収容され、継手本体の内側に配置されるパイプ１０１の外周面に接触するシール部材１５と、パイプを径方向の内側から支持する樹脂製の内筒体３５と、を備え、内筒体は、パイプの内側に配置される筒部３６と、筒部の端部の外周面に設けられ、パイプにおける継手本体の軸方向の端面に係止する鍔部３７と、筒部の外周面に設けられ、鍔部から軸方向に沿ってシール部材に向かって延びてパイプの内周面に接触する突起３８と、を有し、突起の軸方向の長さＬ１は、鍔部とシール部材との軸方向の距離Ｌ２よりも短い。【選択図】図１
Bibliography:Application Number: JP20190013640