Refueling portion structure of fuel tank

A refueling portion structure of a fuel tank, comprising:

• a refueling pipe that has a refueling port into which a refueling nozzle is to be inserted, that is connected to a fuel tank, and that sends liquid fuel, supplied from the refueling nozzle, to the fuel tank;
• an opening/closing valve that is provided on a flow path within the refueling pipe and closes the flow path, and that, when pushed by the refueling nozzle, opens the flow path;
• an accommodating portion that is provided at an outer side of the refueling pipe, that accommodates at an interior thereof an adsorbing material that adsorbs vapor fuel that has formed due to the liquid fuel evaporating, that communicates with the flow path further toward the refueling port side than the opening/closing valve, and into which the liquid fuel can flow;
• an atmospheric air passage, by which the accommodating portion communicates with atmospheric air;
• and
• a vapor movement passage, by which the accommodating portion communicates with an engine, and that is for moving vapor that is within the accommodating portion to the engine due to negative pressure from the engine,
• wherein:
• an absorbent material that absorbs the liquid fuel is accommodated at the interior of the accommodating portion,
• the interior of the accommodating portion is partitioned, by a partitioning member in which are provided openings of a size that restricts passage of the adsorbing material and the absorbent material, into an adsorbing material accommodating space in which the adsorbing material is accommodated, and an absorbent material accommodating space in which the absorbent material is accommodated,
• the adsorbing material accommodating space communicates with the atmospheric air passage, and
• the absorbent material accommodating space communicates with the flow path further toward the refueling port side than the opening/closing valve.