Abstract: An opening-closing apparatus for a fuel tank comprises a fuel passage-forming portion configured to form a fuel passage that is arranged to introduce a supplied liquid fuel to the fuel tank; an insertion-side opening-closing mechanism configured to open and close the fuel passage; a tank-side opening-closing mechanism located on a fuel tank side of the insertion-side opening-closing mechanism and configured to open and close the fuel passage; a liquid discharge path configured to allow for communication of a portion of the fuel passage between the insertion-side opening-closing mechanism and the tank-side opening-closing mechanism to the outside of the opening-closing apparatus; and an open-close valve configured to open and close the liquid discharge path and to be opened toward the outside. This configuration of the opening-closing apparatus for the fuel tank reduces dust and the like invaded from the outside into the fuel passage which a liquid fuel passes through.

Abstract: There is provided a closing device for a filler port. This closing device for the filler port comprises a fuel passage forming portion configured to include a first engagement element; a first open-close mechanism configured to include a first cover that is opened toward an upstream side; and a second open-close mechanism configured to open and close a second opening and include a second cover that is opened toward the upstream side. The first open-close mechanism further comprises a disengagement portion located on the upstream side of a second engagement element when the second engagement element is engaged with the first engagement element, and configured to disengage the second engagement element from the first engagement element when receiving a force in a closing direction from the second cover.

Abstract: There is provided a closing device for a filler port. This closing device for the filler port comprises a fuel passage forming portion configured to include a first engagement element; a first open-close mechanism configured to include a first cover that is opened toward an upstream side; and a second open-close mechanism configured to open and close a second opening and include a second cover that is opened toward the upstream side. The first open-close mechanism further comprises a disengagement portion located on the upstream side of a second engagement element when the second engagement element is engaged with the first engagement element, and configured to disengage the second engagement element from the first engagement element when receiving a force in a closing direction from the second cover.

Abstract: There is provided an opening-closing apparatus for a fuel tank. The opening-closing apparatus for the fuel tank comprises a fuel passage-forming portion configured to form a fuel passage that is arranged to introduce a supplied liquid fuel to the fuel tank; an insertion-side opening-closing mechanism configured to open and close the fuel passage; a tank-side opening-closing mechanism located on a fuel tank side of the insertion-side opening-closing mechanism and configured to open and close the fuel passage; a liquid discharge path configured to allow for communication of a portion of the fuel passage between the insertion-side opening-closing mechanism and the tank-side opening-closing mechanism with outside of the opening-closing apparatus; and an open-close valve configured to open and close the liquid discharge path and to be opened toward the outside of the opening-closing apparatus.

Abstract: A fuel tank opening and closing device is equipped with a tank opening forming member equipped with an injection port forming member having an insertion path and a tank side path arranged outside and inside an injection port, an injection port opening and closing mechanism for opening and closing the injection port, an insertion path forming member, and a drainage mechanism having a drainage path that connects the insertion path and the outside, and exhausts to the outside fuel that has accumulated inside the insertion path, and barrier members arranged on the drainage path. The barrier members are arranged with a labyrinth as the drainage path so that the insertion path cannot be seen from outside.

Abstract: A fuel tank opening and closing device is equipped with a tank opening forming member equipped with an injection port forming member having an insertion path and a tank side path arranged outside and inside an injection port, an injection port opening and closing mechanism for opening and closing the injection port, an insertion path forming member, and a drainage mechanism having a drainage path that connects the insertion path and the outside, and exhausts to the outside fuel that has accumulated inside the insertion path, and barrier members arranged on the drainage path. The barrier members are arranged with a labyrinth as the drainage path so that the insertion path cannot be seen from outside.