PIPE JOINT

• Main Authors: LAI RAN SHIN, KAWADAKA TOSHIKI, MIYAMOTO SHOTA, CHIKAMOTO HIROAKI
• Format: Patent
• Language: English; Japanese
• Published: 03.04.2024
• 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 a pipe joint capable of achieving both tensile strength and tensile fatigue strength while an increase in insertion force of a pipe is suppressed by adjusting a ring width of a coming-off prevention ring and a spacer width.SOLUTION: A pipe joint includes: a joint body; an annular packing arranged on an inner peripheral surface of the joint body; an annular base 103b arranged on the inner peripheral surface of the joint body; an annular spacer 104c arranged on the inner peripheral surface of the joint body; a first coming-off prevention ring 104a arranged on the inner peripheral surface of the joint body; and a second coming-off prevention ring 104b arranged on the inner peripheral surface of the joint body. The first coming-off prevention ring 104a and the second coming-off prevention ring 104b have a plurality of crimping teeth on the inner periphery, and a proportion of width of the spacer 104c and widths of the first coming-off prevention ring 104a and the second coming-off prevention ring 104b is between 0.5 and 0.8.SELECTED DRAWING: Figure 4 【課題】抜け止めリングのリング幅とスペーサー幅を調整することで、パイプの挿入力の上昇を抑えつつ、引張強度及び引張疲労強度が両立可能な管継手を提供することを目的とする。【解決手段】継手本体と、前記継手本体の内周面に配置された環状のパッキンと、前記継手本体の内周面に配置された環状のベース１０３ｂと、前記継手本体の内周面に配置された環状のスペーサー１０４ｃと、前記継手本体の内周面に配置された第１の抜け止めリング１０４ａと、前記継手本体の内周面に配置された第２の抜け止めリング１０４ｂと、を備え、前記第１の抜け止めリング１０４ａおよび前記第２の抜け止めリング１０４ｂは、内周に複数の食い込み歯を有し、前記スペーサー１０４ｃの幅と、前記第１の抜け止めリング１０４ａおよび前記第２の抜け止めリング１０４ｂの幅との比が、０．５～０．８である管継手。【選択図】図４