IN-CORE FOR PIPE MEMBER AND PIPE JOINT

• Main Authors: UENO AKIRA, KONDO TOMOAKI
• Format: Patent
• Language: English; Japanese
• Published: 31.08.2020
• 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

To provide an in-core that is compatible at a high level of easy insertion into a pipe member and prevention of the pipe member from being scraped at the time of the insertion.SOLUTION: A pipe joint 1 includes: a first flow path member 2 having an outer cylinder part 6; a second flow path member 3 having an inner cylinder part 12 inserted into the outer cylinder part 6 and snap-engaged thereto; and an in-core 4 arranged to be inserted into the inner cylinder part 12 so as to strengthen the snap-engage. A plurality of recesses extending in the circumferential direction are formed at an end part of an inner peripheral surface of the inner cylinder part 12 located at the insertion side of the in-core 4, and a temporary holding part 23 is provided between the plurality of recesses. The temporary holding part 23 holds the in-core 4 when the in-core 4 is temporarily inserted into the inner cylinder part 12. In the in-core 4, a tapered surface 43b is formed on an outer peripheral surface of a second end part 43, which becomes smaller in diameter as it approaches an end surface 43a. A small diameter part 43c is provided on a section adjacent to the end surface 43a of the inner peripheral surface of the in-core 4.SELECTED DRAWING: Figure 4 【課題】配管部材への挿入を容易に行い得ることと、当該挿入時において配管部材が削られてしまうことの防止とを高次元で両立できるインコアを提供すること。【解決手段】配管用継手１は、外筒部６を有する第一流路部材２と、外筒部６に挿入されスナップ係合された内筒部１２を有する第二流路部材３と、内筒部１２に挿入配置され、スナップ係合を強固とするためのインコア４とを備えている。内筒部１２の内周面においてインコア４の挿入側に位置する端部には、周方向に延びる複数の凹所が形成され、複数の凹所の間にはそれぞれ仮保持部２３が設けられている。仮保持部２３は、インコア４を内筒部１２に仮挿入したときインコア４を保持する。インコア４において第二端部４３の外周面には、先端面４３ａに対して近づくに連れて小径となるテーパ面４３ｂが形成され、インコア４の内周面において先端面４３ａに隣接する部分には、小径部４３ｃが設けられる。【選択図】図４