Connector, connector assembly and assembly method

摘要

An object of the present invention is to prevent sealability from being impaired. Ribs 305, 306 are formed to project from the inner surface of a receptacle 301 of a second housing 300. A first housing 10 includes a housing main body 11 fittable into the receptacle 301, a seal ring 50 for sealing between the first and second housings 10, 300 is externally mounted on the housing main body 11 and a retaining member is mounted into the housing main body 11. The retaining member includes a pressing surface 67, 90 for preventing the detachment of the seal ring 50 and grooves 68, 86 into which the ribs 305, 306 are inserted when the first and second housings are connected. Reverse tapered surfaces 74, 91 inclined toward the housing main body 11 to approach the pressing surface 67, 90 are formed on the back surfaces of the grooves 68, 86 at a side facing and opposite to the pressing surface 67, 90 of the retaining member.