Fuel supply device and method for producing same

A method for producing a fuel supply device that is configured to supply fuel, which is present in a fuel tank of a vehicle, to an outside of the fuel tank, the fuel supply device including:

• a sub-tank that stores the fuel;
• a suction filter that is placed along a bottom portion of the sub-tank and filters the fuel;
• a fuel pump that suctions the fuel, which is filtered through the suction filter;
• a pressure regulator that is placed at an outside of the sub-tank and regulates a pressure of the fuel of a pressure-regulation path discharged from the fuel pump and is fed toward the outside of the fuel tank;
• and
• a regulator holder that includes a fuel recovery passage portion, wherein the fuel recovery passage portion recovers excess fuel, which becomes excess at the pressure-regulation path, to the sub-tank, and the regulator holder holds the pressure regulator, wherein:
• the sub-tank has an opening that opens at a location, which is higher than the suction filter;
• and
• the fuel recovery passage portion has an excess fuel outlet that discharges the excess fuel at a location that is on an inner side of the opening where an inside of the sub-tank is placed, the method comprising:
• a holding step of holding the pressure regulator with the regulator holder by assembling the pressure regulator to the regulator holder;
• and
• an inserting step of inserting the fuel recovery passage portion through the opening such that a unit, which includes the regulator holder, is assembled to the sub-tank in a direction that coincides with an opening direction of the opening, so that the excess fuel outlet is inserted from the outside of the sub-tank into an inside of the sub-tank through the opening.

A fuel supply device configured to supply fuel, which is present in a fuel tank of a vehicle, to an outside of the fuel tank, the fuel supply device comprising:

• a sub-tank that stores the fuel;
• a suction filter that is placed along a bottom portion of the sub-tank and filters the fuel;
• a fuel pump that suctions the fuel, which is filtered through the suction filter;
• a pressure regulator that is placed at an outside of the sub-tank and regulates a pressure of the fuel of a pressure-regulation path, which is discharged from the fuel pump and is fed toward the outside of the fuel tank;
• and
• a fuel recovery passage portion that recovers excess fuel, which becomes excess at the pressure-regulation path, to the sub-tank, wherein:
• the sub-tank has an opening that opens to the outside of the sub-tank at a location that is higher than the suction filter;
• due to a state where the fuel recovery passage portion is inserted from the outside of the sub-tank into an inside of the sub-tank while a gap is interposed between the fuel recovery passage portion and the opening, the fuel recovery passage portion has an excess fuel outlet that discharges the excess fuel at a location that is on an inner side of the opening where the inside of the sub-tank is placed;
• and
• the fuel supply device further comprises a regulator holder that holds the pressure regulator, wherein the fuel recovery passage portion is formed as a part of the regulator holder.