PROBLEM TO BE SOLVED: To provide a connector system capable of solving a problem in contamination of the end face of a connector without forming projecting and recessed parts such as a fixing mechanism on an outer peripheral surface of the connector.SOLUTION: A connector system includes: a connecting part connected to a tube an outer cylinder located on the other end side in an axial direction a passage forming member extending inside the outer cylinder from on end side in the axial direction to an opening of the outer cylinder and an annular valve body movable between a closing position on the other end side and a push-in position on one end side in the periphery of the passage forming member. The annular valve body seals the opening of the outer cylinder in the closing position, and the passage forming member includes: a connector which has a liquid passage for circulating a liquid between one end of the connecting part and a space on the other end side from the push-in position in the outer cylinder in the push-in position of the annular valve body and a connector lid for sealing the opening of the outer cylinder. The connector lid has an insertion part which enters the inside of the outer cylinder of the connector in a fitting state on one end side, and an inner peripheral surface of the outer cylinder and an outer peripheral surface of the insertion part are provided with engagement parts which engage with each other in the fitting state.COPYRIGHT: (C)2014,JPO&INPIT【課題】コネクタの外周面に固定機構などの凹部や凸部を形成することなく、コネクタの端面の汚染の問題を解決することが可能なコネクタシステムを提供する。【解決手段】チューブに接続される接続部と、軸線方向他端側に位置する外筒と、外筒の内側を軸線方向一端側から外筒開口部まで延びる流路形成部材と、流路形成部材の周囲に、他端側の閉止位置と一端側の押込位置との間を移動可能な環状弁体とを備え、環状弁体は、閉止位置で外筒開口部を密閉し、流路形成部材は、環状弁体の押込位置で、接続部の一端と外筒内の押込位置よりも他端側の空間との間で液体を流通可能とする液体通路を有する、コネクタと、外筒開口部を密閉するコネクタ用蓋と、を備え、コネクタ用蓋は、一端側に、嵌合状態でコネクタの外筒の内側に入り込む挿入部を有し、外筒の内周面および挿入部の外周面には、嵌合状態において互いに係合する係合部が設けられていることを特徴とする。【選択図】図1
