It is to prevent unintentional loosening or out of the [problem] connector. Comprises a male connector and a female connector having A lure taper truncated conical of the cylindrical portion having a connection surface, respectively, the male connector is, times the base of the cylindrical portion of the male connector movably inserted through a nut having a female screw while being regulated axial movement by engagement with the base portion, the female connector, the distal end portion of the cylindrical portion of the female connector radially outward It has a projecting ridge, the fitting of the connection faces of the male connector and the female connector and by the female screw of the nut tightening the female connector tip portion of the nut and screw engaged in the ridge of in the locking luer taper connector so as to maintain the, at least one of the ridges of the female connector with the female screw of the nut, on the other hand and in threaded engagement with them female screw and the female connector of the ridges of the nut it is characterized in that it has a locking portion that closely or densely by engagement provides resistance to relative rotation between the female connector and the nut.FIELD 1【課題】コネクタの意図しない緩みや外れを防止することにある。【解決手段】ルアーテーパーの裁頭円錐状の接続面を持つ筒状部をそれぞれ有する雄コネクタおよび雌コネクタを具え、前記雄コネクタは、その雄コネクタの筒状部の基部に回動可能に挿通されてその基部との掛合により軸線方向移動を規制されるとともに雌ネジを持つナットを有し、前記雌コネクタは、その雌コネクタの筒状部の先端部から半径方向外方へ突出した突条を有し、前記ナットの雌ネジを前記雌コネクタの先端部の突条に螺合させてそのナットを締め込むことで前記雄コネクタと前記雌コネクタとの接続面同士の嵌合を維持するようにしたロック式ルアーテーパーコネクタにおいて、前記ナットの雌ネジと前記雌コネクタの突条との少なくとも一方が、それらナットの雌ネジと雌コネクタの突条との螺合状態で他方と密接もしくは密に掛合して前記ナットと前記雌コネクタとの相対回動に抵抗を与えるロック部を有することを特徴とするものである。【選択図】図1
