PROBLEM TO BE SOLVED: To provide a connection component which reduces the force required for engagement between a fitting member with a fitting portion provided therein and a discharge member having a duct and reliably establishes a tight engagement without liquid spill even with a weak force.SOLUTION: The connection component comprises: the fitting member with a fitting portion 12 provided therein, the fitting portion being cylindrically formed, having a fitting port at one end, and being formed in a female tapered shape in which the inner diameter of the cylinder hole gradually reduces from the fitting port toward the back and the discharge member having a duct 22 formed in a male tapered shape in which the outer diameter of the cylinder gradually reduces toward the tip. The female tapered portion of the fitting portion is fitted from the fitting port to the duct 22 such that a tip outer edge of the duct 22 abuts against and engages with the female tapered portion. Provided that the male tapered portion of the duct 22 is shaped with a taper ratio of N/100, the female tapered portion of the fitting portion 12 is shaped with a taper ratio of M/100 in M>N.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】嵌入部が設けられている嵌入部材と管を有する排出部材との取り付けに必要な力を低減し、弱い力であっても液漏れすることなく確実に取り付けることができる接続部材を提供することを目的とする。【解決手段】接続部材は、筒状に形成され、その一端が嵌入口になり、その筒孔の内径が嵌入口側から奥に向かうにつれ小さくなる雌型のテーパー形状に形成された嵌入部12が設けられた嵌入部材と筒の外径が先端に向かうにつれ小さくなる雄型のテーパー形状で形成された管22を有する排出部材とからなり、管22に嵌入口から嵌入部の雌型のテーパー形状が嵌め込まれて、管22の先端外縁が前記雌型のテーパー形状に当たって食い込むように用いられ、管22の雄型のテーパー形状が、N/100のテーパー率のときに嵌入部12の雌型のテーパー形状がM>NでM/100のテーパー率で形成されている。【選択図】図1