Retainer mounting structure of connector

A connector and retainer mounting structure comprising:

• a connector mounted in a predetermined position to define an upper surface of said connector;
• at least one cavity formed in said connector for receiving a terminal in a longitudinal direction;
• a retainer mounting hole formed in the upper surface of said connector and extending inwardly from the upper surface in a direction normal to said longitudinal direction to communicate with said at least one cavity, said retainer mounting hole including an extension portion extending outwardly above said upper surface and defining extending peripheral sides having peripheral side surfaces, vertical inner walls, and an open end;
• a retainer for retaining said terminal against withdrawal, said retainer being fitted in said retainer mounting hole, said retainer including a flange that closes and seals the vertical inner walls of said retainer mounting hole by abutting against the open end of said extension portion.

A connector and retainer mounting structure comprising:

• a connector mounted in a predetermined to define an upper surface of said connector;
• at least one cavity formed in said connector for receiving a terminal in a longitudinal direction;
• a retainer mounting hole formed in the upper surface of said connector and extending inwardly from the upper surface in a direction normal to the longitudinal direction to communicate with said at least one cavity, said retainer mounting hole including an extension portion extending outwardly above said upper surface and defining extending peripheral sides having peripheral side surfaces, vertical inner walls, and an open end;
• a retainer for retaining said terminal against withdrawal, said retainer being fitted in said retainer mounting hole and defining a vertical gap between said vertical inner walls of said extension portion and said retainer, said retainer including a flange having peripheral dimensions that close and seal the vertical gap and abut said open end of said tubular extension portion and form a horizontal gap.