Fueling device and manufacturing method of a fueling device

A fueling device that supplies a fuel to a fuel tank, comprising:

• a fuel passage-forming member that includes a fuel passage connected with the fuel tank;
• and
• a flap valve mechanism that includes an opening-forming member attached to one end of the fuel passage-forming member, and an opening-closing mechanism attached to the opening-forming member to open and close a filler inlet of the opening-forming member, wherein
• the fuel passage-forming member includes a pipe body in a pipe shape made of a resin material, and a welding end formed at top of the pipe body,
• the opening-forming member includes a filler inlet-forming member containing the filler inlet, and a welded end formed in the filler inlet-forming member,
• the welded end is made of a resin material welded to the resin material of the welding end and is welded to the welding end, and
• the welding end is located below an end face of the fuel passage-forming member in an axial direction.

A manufacturing method of a fueling device that supplies a fuel to a fuel tank, comprising the steps of:

• providing a fuel passage-forming member that includes a fuel passage connected with the fuel tank, and a flap valve mechanism, wherein
• the flap valve mechanism includes an opening-forming member and an opening-closing mechanism configured to open and close a filler inlet of the opening-forming member,
• the fuel passage-forming member includes a pipe body in a pipe shape made of a resin material, and a welding end formed at top of the pipe body,
• the opening-forming member includes a filler inlet-forming member includes the filler inlet, and a welded end formed in the filler inlet-forming member, and
• the welded end is made of a resin material welded to the resin material of the welding end;
• forming a ring-shaped projection of a triangular cross section on either one of the welding end and the welded end;
• fixing the fuel passage-forming member and the flap valve mechanism, such that the welding end and the welded end are in contact with each other;
• and
• causing a laser beam to pass through the welding end or the welded end and irradiating the ring-shaped projection with the laser beam.