Fuel feed apparatus having vibration damping structure

A fuel feed apparatus disposed in a fuel tank, the fuel feed apparatus comprising:

• a sub-tank that is received in the fuel tank;
• a pump module that is received in the sub-tank and includes:
• a fuel pump that pumps fuel, which is supplied from the fuel tank to the sub-tank;
• and
• a suction filter that is placed below the fuel pump in a vertical direction and is connected to the fuel pump and to a bottom inner wall of the sub-tank on an opposite side with respect to the fuel pump, wherein the suction filter removes debris from fuel to be supplied to the fuel pump;
• at least one supporting member that has resiliency and supports the fuel pump in cooperation with the sub-tank at a location, which is above the suction filter in the vertical direction;
• and
• an elastic member, which contacts the bottom inner wall of the sub-tank, wherein:
• a bottom section of the suction filter contacts the elastic member,
• a contact surface of the suction filter, which contacts the elastic member, has one of a concave surface section and a convex surface section,
• a contact surface section of the elastic member, which contacts the suction filter, has the other one of the concave surface section and the convex surface section, and
• the concave surface section has a decreasing inner diameter that linearly decreases toward a bottom of the concave surface section.

A fuel feed apparatus disposed in a fuel tank, the fuel feed apparatus comprising:

• a sub-tank that is received in the fuel tank;
• a pump module that is received in the sub-tank and includes:
• a fuel pump that pumps fuel, which is supplied from the fuel tank to the sub-tank;
• and
• a suction filter that is placed below the fuel pump in a vertical direction and is connected to the fuel pump and to a bottom inner wall of the sub-tank on an opposite side with respect to the fuel pump, wherein the suction filter removes debris from fuel to be supplied to the fuel pump;
• and
• at least one supporting member that has resiliency and supports the fuel pump in cooperation with the sub-tank at a location, which is above the suction filter in the vertical direction, wherein:
• the at least one supporting member connects with the sub-tank at a plurality of connecting positions, which are spaced from one another in a circumferential direction, the plurality of connecting positions of the at least one supporting member include at least three connecting positions, and a central axis of the pump module is located within an imaginary polygon, which has a plurality of vertexes, each of which is located in a corresponding one of the at least three connecting positions of the at least one supporting member.

A fuel feed apparatus disposed in a fuel tank, the fuel feed apparatus comprising:

• a sub-tank that is received in the fuel tank;
• a pump module that is received in the sub-tank and includes:
• a fuel pump that pumps fuel, which is supplied from the fuel tank to the sub-tank;
• and
• a suction filter that is placed below the fuel pump in a vertical direction and is connected to the fuel pump and to a bottom inner wall of the sub-tank on an opposite side with respect to the fuel pump, wherein the suction filter removes debris from fuel to be supplied to the fuel pump;
• and
• at least one supporting member that has resiliency and supports the fuel pump in cooperation with the sub-tank at a location, which is above the suction filter in the vertical direction,
• wherein:
• the at least one supporting member is snap fit to the sub-tank;
• each of the at least one supporting member includes a sub tank side connecting portion, which is snap fit to the sub-tank and includes an outer peripheral section and an inner peripheral section;
• and
• a peripheral wall of the sub-tank is held between the outer peripheral section and the inner peripheral section of each of the at least one supporting member.