A connector includes an embodiment that is equipped with a lever configured to turn around a turning shaft portion provided on the outside of an outer shell portion of a housing of the connector. The lever is equipped with a cam shaft portion inserted through a window formed in the outer shell into a cam groove formed in a slider. The lever further includes a cam shaft portion having a base portion and a hook portion wherein the hook portion extends beyond and engages an edge of the window preventing the cam shaft from detaching from the cam groove.