Method for attaching filler pipe and filler pipe attachment structure

Patent metadata

Field	Value
Publication number	US-2016109042-A1
Application number	US-201414893550-A
Country	US
Kind code	A1
Filing date	May 23, 2014
Priority date	May 29, 2013
Publication date	Apr 21, 2016
Grant date	—

Abstract

Provided is a method that is for attaching a filler pipe and that can reduce the amount of transmission of a hydrocarbon and can attach easily. The method for attaching a filler pipe attaches a filler pipe to the aperture of a fuel tank with an attachment member therebetween, and is characterized by containing: a fitting step for fitting the tubular attachment member to the inside of the aperture of the filler pipe; a contact step for contacting, to the surface at the periphery of the aperture of the fuel tank, a first flange protruding outwards in the radial direction from the outer peripheral surface of the attachment member, and a second flange protruding outwards in the radial direction from the outer peripheral surface of the filler pipe; and a welding step for welding the first flange and second flange to the surface.

First claim

1 . A filler-pipe attachment method for attaching a filler pipe to an opening of a fuel tank through an attachment member, comprising:
a fitting step of fitting the attachment member into an opening of the filler pipe, where the attachment member has a cylindrical shape; an abutting step of bringing a first flange and a second flange into contact with a face around the opening of the fuel tank, where the first flange radially protrudes outward from an outer circumferential surface of the attachment member, and the second flange radially protrudes outward from an outer circumferential surface of the filler pipe; and a welding step of welding the first flange and the second flange to the face.

2 . The filler-pipe attachment method according to claim 1 , wherein a first opposed face of the first flange which is opposed to the face and a second opposed face of the second flange which is opposed to the face are brought flush with each other in the fitting step.

3 . A filler-pipe attachment structure in which a filler pipe is attached to an opening of a fuel tank through an attachment member; wherein
the attachment member includes,
a main body portion having a cylindrical shape and being inserted through the opening of the fuel tank,
a protruding portion having a cylindrical shape, continuing to the main body portion, and protruding to outside of the opening of the fuel tank, and
a first flange radially protruding outward from an outer circumferential surface of the protruding portion;
the filler pipe includes,
a base portion which has a cylindrical shape and to which the protruding portion is fitted, and
a second flange which radially protrudes outward from an outer circumferential surface of the base portion; and
a first opposed face of the first flange which is opposed to a face around the opening of the fuel tank and a second opposed face of the second flange which is opposed to the face are flush with each other, and the first opposed face and the second opposed face are welded to the face around the opening of the fuel tank.

4 . The filler-pipe attachment structure according to claim 3 , wherein the first flange is formed to curve convexly to a direction going away from the opening of the fuel tank along an axial direction of the opening of the fuel tank.

Assignees

• Yachiyo Ind Co Ltd

Inventors

• Hirohara Takeshi
• Tsukahara Shunsuke

Classifications

• B60K2015/0346

  by welding · CPC title

• B60K2015/047

  Manufacturing of the fuel inlet or connecting elements to fuel inlet, e.g. pipes or venting tubes · CPC title

• F02M37/0017

  related to fuel pipes or their connections, e.g. joints or sealings (F02M55/004 takes precedence) · CPC title

• F16L23/00

  Flanged joints (F16L13/00, F16L17/00, F16L19/00 take precedence; adjustable joints F16L27/00; for hoses F16L33/00; couplings of the quick-acting type F16L37/00; for double-walled or multi-channel pipes, or pipe assemblies F16L39/00; connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics F16L47/00; specially adapted for pipes of brittle material F16L49/00) · CPC title

• F16L25/00

  Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00 (adjustable or allowing movement F16L27/00; with fluid cut-off means F16L29/00; quick-acting F16L37/00; for double-walled or multi-channel pipes F16L39/00; connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics F16L47/00; specially adapted for pipes of brittle material F16L49/00) · CPC title