Provided is a joint and a joint assembly capable of suppressing the leakage of fluid flowing inside a tube while suppressing damage to the tube and detachment of the tube. The ring 70 is located inside the nut 30 and outside the tube 90 and has a Young''s modulus higher than that of the tube 90. [ The ring 70 has at least a radially inner side in the radial direction of the ring 70 and a radially inner side of the ring 70 in the axial direction on the side of the body proper 20 and toward the axial main body 20 side And has an expanded curved surface portion 75. ? = H / r is 0.5 or more and 1.2 or less when the maximum thickness in the radial direction of the ring 70 is 2r and the length in the axial direction of the curved surface portion 75 of the ring 70 is h.
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机译：提供一种接头和接头组件，其能够抑制在管内部流动的流体的泄漏，同时抑制对管的损坏和管的分离。环70位于螺母30的内部并且在管90的外部，并且具有比管90的杨氏模量高的杨氏模量。[环70在环70的径向上至少具有径向内侧，并且环70的径向至少在径向内侧。环70的径向内侧在主体本体20侧上并且朝向轴向主体20侧在径向内侧，并且具有扩大的弯曲表面部分75。当环70的径向上的最大厚度为2r并且环70的曲面部分75的轴向上的长度为h时，＝ H / r为0.5以上且1.2以下。
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