Fuel tank opening-closing device

A fuel tank opening-closing device that opens and closes a fuel passage for supplying fuel discharged by a fueling nozzle to a fuel tank, the fuel tank opening-closing device comprising:

• a tank opening forming member that includes (i) the fuel passage and (ii) a first opening forming member, disposed in the fuel passage and having a first opening, and
• a first flap valve mechanism having (i) a first opening-closing member for opening and closing the first opening, and (ii) a first shaft rotatably supporting an end part of the first opening-closing member on the first opening forming member,
• wherein the first opening-closing member includes:
• a pressing part that has (i) a push face pressed by an end of the fueling nozzle and (ii) a restriction wall forming a restriction region that restricts so as to selectively allow insertion of a specific outer form of the fueling nozzle, the restriction wall being configured to be erected along an outer edge of the push face and to enclose at least a portion of the push face, and
• a guide member that is formed and inclined to broaden a nozzle guiding space from an upper part of the restriction wall toward an insertion direction of the fueling nozzle, the guide member being configured to guide the end of the fueling nozzle to the restriction region, and
• an opening and closing activation mechanism that includes (i) a nozzle detection member that is to be pressed by the end of the fueling nozzle and (ii) a locking member that works in conjunction with the nozzle detection member to have a locked position which locks the opening and closing operation of the first opening-closing member and an unlocked position which allows the opening and closing operation,
• wherein the nozzle detection member is disposed on the restriction wall, and switches the locking member from the locked position to the unlocked position by being pressed by the end of the fueling nozzle inserted in the restriction region.

A fuel tank opening-closing device that opens and closes a fuel passage for supplying fuel discharged by a fueling nozzle to a fuel tank, the fuel tank opening-closing device comprising:

• a tank opening forming member that includes (i) the fuel passage and (ii) a first opening forming member, disposed in the fuel passage and having a first opening, and
• a first flap valve mechanism having (i) a first opening-closing member for opening and closing the first opening, and (ii) a first shaft rotatably supporting an end part of the first opening-closing member on the first opening forming member,
• wherein the first opening-closing member includes:
• a pressing part that has (i) a push face pressed by an end of the fueling nozzle and (ii) a restriction wall forming a restriction region that restricts so as to selectively allow insertion of a specific outer form of the fueling nozzle, the restriction wall being configured to be erected along an outer edge of the push face and to enclose at least a portion of the push face, and
• a guide member that is formed and inclined to broaden a nozzle guiding space from an upper part of the restriction wall toward an insertion direction of the fueling nozzle, the guide member being configured to guide the end of the fueling nozzle to the restriction region, wherein
• the tank opening forming member has a second opening forming member having the second opening, and disposed inside the fuel passage and more to the fuel tank side than the first opening forming member, and
• further comprises a second flap valve mechanism that includes (i) a second opening-closing member for opening and closing the second opening and (ii) a second shaft rotatably supporting an end part of the second opening-closing member.