<p>A lever jig (2) and connector device (1) are provided with: an opening/closing door (7) that displaces between an open position for allowing a connector (20) to be mounted and a closed position for blocking removal of the connector (20) in the mounted position; a door holder (9) for holding the opening/closing door (7) in the open position; and an automatic door opener (DA) for moving the opening/closing door (7) in the closed position to the open position against the holding force of the door holder (9) upon completion of an operation from a fitting-operation start position to a fitting-operation end position.</p>
