Tank opening-closing device

A tank opening-closing device for opening and closing an inlet for supplying fuel to a fuel tank, the tank opening-closing device comprising:

• a tank opening forming member having the inlet, and a fuel path for leading the fuel to the fuel tank through the inlet,
• a valve opening-closing mechanism having (i) an opening-closing member including a pivot at the tank opening forming member, the opening-closing member pivoting about the pivot and closing the inlet with an air-tight sealing, and (ii) a spring for biasing the opening-closing member in a closing direction, and
• an opening-closing activation mechanism having (i) an operating member including a pivot at one end thereof, and (ii) a pressing member for pressing the opening-closing member in an opening direction;
• the operating member including a plate-shaped operating member main body, the pressing member formed on the operating member and protruding from a bottom of the plate-shaped operating member main body, wherein the bottom of the plate-shaped operating member main body faces the opening-closing member,
• wherein the opening-closing member has a pressing position arranged toward an end thereof opposite the pivot and the pressing position extends in a radial direction from a center of the opening-closing member, the opening-closing activation mechanism and the pressing member work together and are configured to pivot open the opening-closing member and open the inlet by the pressing member pressing a surface of the pressing position of the opening-closing member in the opening direction and the pressing member sliding along the surface of the pressing position of the opening-closing member.