PROBLEM TO BE SOLVED: To provide a cleaning adapter which does not drop during cleaning and is easily mounted on the endoscope.SOLUTION: An adapter body 52 includes a roughly columnar support part 57, a connection cylinder part 58, and a supply cylinder part 60. The connection cylinder part 58 is attached to the support part 57 eccentrically to the center axis S2 of the support part 57. A holding cylinder 53 holds the adapter body 52 freely rotatably and freely movably in a center axis direction. A lock member 54 has an opening into which a mouth ring can be inserted toward the connection cylinder part 58. A coil spring 66 energizes the adapter body 52 to the holding cylinder 53 toward the side of the connection cylinder part 58. A locking part is provided on the opening of the lock member 54. By the relative rotation of the holding cylinder 53 and the adapter body 52, the locking part is displaced to a locking position where the locking part is locked to the flange part of the mouth ring and an unlocking position where the lock of the locking part is released. Since a part of the flange part is pressed by the locking part at the locking position, the washing adapter 2 does not drop from the mouth ring.COPYRIGHT: (C)2013,JPO&INPIT【課題】洗浄中に脱落することがなく、装着が簡単に行える洗浄アダプタを提供する。【解決手段】アダプタ本体52は、略円柱状の支持部57、接続筒部58、供給筒部60を有する。接続筒部58は支持部57の中心軸S2に対して偏心して取り付けられる。保持筒53は、アダプタ本体52を回転自在に且つ中心軸方向で移動自在に保持する。ロック部材54は、接続筒部58に向けて口金が挿入可能な開口を有する。コイルバネ66は、保持筒53に対してアダプタ本体52を接続筒部58側に向けて付勢する。係止部はロック部材54の開口に設けられる。係止部は、保持筒53とアダプタ本体52との相対回転により、口金のフランジ部に係止する係止位置と、係止を解除する係止解除位置とに変位する。係止位置では、フランジ部の一部が係止部により押さえられるため、口金から洗浄アダプタ2が脱落することがない。【選択図】図2
