Mounting structure of fuel device

A fuel device assembly comprising a fuel shut-off valve and a baffle plate for suppressing waving of liquid fuel stored in a fuel tank, wherein

• the fuel shut-off valve comprises a plurality of components,
• one of the plurality of components of the fuel shut-off valve is integrally formed, as a mounting portion, with the baffle plate,
• remaining components of the plurality of components of the fuel shut-off valve are mounted, as a mounted portion, on the mounting portion of the baffle plate,
• the baffle plate includes
• a flat body wall for suppressing waving of the liquid fuel,
• the one of the plurality of components that is the mounting portion, and
• a connector for connecting the body wall to the one of the plurality of components that is the mounting portion,
• the one of the plurality of components that is the mounting portion is arranged at a location spaced from the body wall in a thickness direction of the body wall,
• the fuel shut-off valve includes a housing having a communication opening in communication with a canister and includes a float valve arranged within the housing and floating on the liquid fuel so as to open and close the communication opening by vertically moving in accordance with fluctuation of a liquid surface,
• the housing includes an inner housing member and an outer housing member,
• at least a part of the float valve is arranged within the inner housing member,
• at least a part of the inner housing member is arranged within the outer housing member,
• the outer housing member extends in a vertical direction and has a lower opening at a lower end,
• the outer housing member is integrally formed, as the mounting portion, with the baffle plate,
• the fuel shut-off valve detects that the fuel tank is filled with the liquid fuel when gas pressure in the fuel tank rises after the liquid surface of the liquid fuel in the fuel tank reaches the lower opening, and
• the fuel shut-off valve is configured such that, after the liquid surface of the liquid fuel in the fuel tank rises to the lower opening, a pressure difference is generated between a gaseous phase part of the fuel tank and a gaseous phase part in the inner housing member so that a liquid surface of the liquid fuel in the inner housing member rises and becomes higher than the liquid surface of the liquid fuel in the fuel tank, thereby moving the float valve to close the communication opening to allow a liquid level of the liquid fuel when the fuel tank is full to be substantially the same height position as the lower opening.