PROBLEM TO BE SOLVED: To provide a highly-versatile connection structure between a first member and a second member that need to be connected fluid-tightly, the first member of one kind being adaptable to the second member of a plurality of different kinds.SOLUTION: A connection structure C includes a first member 1 having a first member side body 11 and a connection part 12, and a second member 2 having a second member side body 21 and a member 22 to be connected. In the first member 1, a first member side connection part 13 is provided to the first member side body 11, and the connection part 12 has a contact part 12c that comes in contact with the member 22 to be connected. The second member 2 is provided with a second member side connection part 23 and the member 22 to be connected has a region 22a to be contacted capable of contact with the contact part 12c. By adjusting the position of connection between the first member side connection part 13 and the second member side connection part 23, the contact part 12c and the region 22a to be contacted come in contact with each other at the position where they can contact each other fluid-tightly.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2017,JPO&INPIT【課題】流体密に接続する必要のある第1部材と第2部材との間の接続構造において、1つの種類の第1部材で、異なる複数種類の第2部材に対応可能な汎用性の高い接続構造の提供を目的とする。【解決手段】本発明の接続構造Cは、第1部材側本体11と接続部12とを有する第1部材1と、第2部材側本体21と被接続部22とを有する第2部材2とを備え、第1部材1には第1部材側本体11に第1部材側連結部13が設けられ、接続部12は被接続部22に接触する接触部12cとを有し、第2部材2には第2部材側連結部23が設けられ、被接続部22は、接触部12cと接触可能な被接触領域22aとを有し、第1部材側連結部13と、第2部材側連結部23との連結位置を調整することにより、接触部12cと被接触領域22aとが流体密に接触可能な位置で接触することを特徴とする。【選択図】図3
