Abstract: A fueling device includes a fuel passage-forming member and a flap valve mechanism. The flap valve mechanism includes an opening-forming member attached to one end of the fuel passage-forming member and an opening-closing mechanism to open and close a filler inlet of the opening-forming member. The fuel passage-forming member includes a pipe body containing a resin inner layer in a pipe shape made of a first resin material and a resin outer made of a second resin material, and a welding end formed on an opening end of the pipe body. The opening-forming member includes a cover member that covers the opening end of the pipe body and a welded end formed on an opening end of the cover member and welded to the welding end. The cover member is made of a third resin material welded to either one of the first resin material and the second resin material.

Abstract: A fueling device includes a fuel passage-forming member and a flap valve mechanism. The flap valve mechanism includes an opening-forming member attached to one end of the fuel passage-forming member and an opening-closing mechanism to open and close a filler inlet of the opening-forming member. The fuel passage-forming member includes a pipe body containing a resin inner layer in a pipe shape made of a first resin material and a resin outer made of a second resin material, and a welding end formed on an opening end of the pipe body. The opening-forming member includes a cover member that covers the opening end of the pipe body and a welded end formed on an opening end of the cover member and welded to the welding end. The cover member is made of a third resin material welded to either one of the first resin material and the second resin material.

Abstract: A fuel supply apparatus for supplying fuel to a fuel tank includes a passage forming member that has a fuel passage connected to the fuel tank, an injection port forming member that is disposed in the fuel passage and fixed to the passage forming member, the injection port forming member having an injection port forming a part of the fuel passage, and an injection port open and close mechanism that is mounted to the injection port forming member and has an open and close member for opening and closing the injection port. A reinforcing member of the passage forming member and a welded portion of the passage forming member and the injection port forming member are arranged in the vicinity of a common plane perpendicular to a center line of the fuel passage.

Abstract: A filler neck is equipped with a neck main body having a pipe shaped resin inner layer and resin outer layer, and a retainer made of metal mounted so as to cover the edge part of the neck main body. The resin inner layer and the resin outer layer are made of resin materials for which one layer has superior fuel permeability resistance to the other layer. The resin inner layer has a screw part for screwing into a screw part of a fuel cap on the inner wall of the resin inner layer. The retainer has a seal part for sealing between the gasket, and a round cylinder shaped outer circumference protector part. The lower end of the outer circumference protector part is on plane perpendicular to the center axis of the fuel path. The plane includes the screw part.

Abstract: A fueling device includes a fuel passage-forming member and a flap valve mechanism. The flap valve mechanism includes an opening-forming member attached to one end of the fuel passage-forming member and an opening-closing mechanism to open and close a filler inlet of the opening-forming member. The fuel passage-forming member includes a pipe body containing a resin inner layer in a pipe shape made of a first resin material and a resin outer made of a second resin material, and a welding end formed on an opening end of the pipe body. The opening-forming member includes a cover member that covers the opening end of the pipe body and a welded end formed on an opening end of the cover member and welded to the welding end. The cover member is made of a third resin material welded to either one of the first resin material and the second resin material.

Abstract: A filler neck is equipped with a neck main body having a pipe shaped resin inner layer and resin outer layer, and a retainer made of metal mounted so as to cover the edge part of the neck main body. The resin inner layer and the resin outer layer are made of resin materials for which one layer has superior fuel permeability resistance to the other layer. The resin inner layer has a screw part for screwing into a screw part of a fuel cap on the inner wall of the resin inner layer. The retainer has a seal part for sealing between the gasket, and a round cylinder shaped outer circumference protector part. The lower end of the outer circumference protector part is on plane perpendicular to the center axis of the fuel path. The plane includes the screw part.