Abstract: A resin filler tube includes: a tubular body; a flange having a diameter greater than an outer diameter of the tubular body, a thickness greater than a thickness of the tubular body, and a predetermined width in an axial direction, and having a first axial end face forming a weld surface to be welded to an outer circumferential edge of an opening hole of a fuel tank; and a base-end-side reverse tapered portion which connects between an end of the tubular body on the fuel tank side and an end of an outer circumferential surface of the flange on a side opposite to the fuel tank side, and which is reversely tapered so as to increase a diameter toward the flange. The base-end-side reverse tapered portion has an inner diameter that is not less than an inner diameter of the tubular body over an entire range in the axial direction.

Abstract: Provided are a resin filler tube capable of facilitating manufacture and ensuring rigidity in a bent tube portion, and a manufacturing method thereof. A resin filler tube connects an oil filling port and a fuel tank and includes straight tube portions and bent tube portions. The bent tube portions include a bellows-shaped bent inner portion in which hill portions and valley portions are continuous, and a bent outer portion which is formed by a non-bellows-shaped smooth surface. The valley portion of the bent inner portion has a linear outer peripheral surface parallel to a center line of the bent tube portions in a state in which the bent tube portions are in a straight tubular shape, and the linear outer peripheral surface of the valley portions is formed in an entire circumferential range in which the hill portions are formed.

Abstract: A refueling port is provided and includes: a refueling port main body made of resin; an inlet fitting formed in a tubular shape and arranged at an inlet opening of the refueling port main body; a resin cover formed in a tubular shape, molded separately from the inlet fitting, mounted on the outer peripheral side of the inlet fitting, and fitted to the refueling port main body; and a ground fitting formed in a long shape and connected to the inlet fitting. The ground fitting includes: an exposed portion arranged to face the outer peripheral surface of the cover; and an insertion portion formed by folding back from a first end of the exposed portion on the inlet side, sandwiched between the outer peripheral surface of the inlet fitting and the inner peripheral surface of the cover, and coming into contact with the outer peripheral surface of the inlet fitting.

Abstract: Provided is a refueling port which can be manufactured at low cost. A refueling port includes: a refueling port main body made of resin; an inlet fitting formed in a tubular shape, arranged at an inlet opening of the refueling port main body, and having a groove on the outer peripheral surface; and a resin cover formed in a tubular shape, arranged on the outer peripheral side of the inlet fitting, having internal protrusions that engage with the groove of the inlet fitting in a tubular axial direction of the inlet fitting, and fitted to the inner peripheral surface of the inlet opening of the refueling port main body.

Abstract: A resin filler tube includes: a tubular body; a flange having a diameter greater than an outer diameter of the tubular body, a thickness greater than a thickness of the tubular body, and a predetermined width in an axial direction, and having a first axial end face forming a weld surface to be welded to an outer circumferential edge of an opening hole of a fuel tank; and a base-end-side reverse tapered portion which connects between an end of the tubular body on the fuel tank side and an end of an outer circumferential surface of the flange on a side opposite to the fuel tank side, and which is reversely tapered so as to increase a diameter toward the flange. The base-end-side reverse tapered portion has an inner diameter that is not less than an inner diameter of the tubular body over an entire range in the axial direction.

Abstract: A resin filler tube includes: a tubular body; a flange that protrudes radially outward from an end of the tubular body on a fuel tank side, over an entire circumference, has a plurality of layers that are of same kinds as those of the tubular body, has outer faces all of which are formed of an outermost layer material, and has a first end face, in an axial direction, forming a weld surface to be welded to an outer circumferential edge of an opening hole of the fuel tank; and a leading end tubular portion extending from a radially inner portion of the flange toward a leading end of the filler tube, and having an annular recessed groove formed at a portion of an outer circumferential surface on the flange side, over an entire circumference, for storing a melt burr generated in welding of the first end face.

Abstract: A manufacturing process for filler tube includes: a workpiece arrangement step of arranging a workpiece onto an outer peripheral mold not only to axially lock a to-be-locked portion with respect to a locking portion but also so as to make the outer peripheral mold, which is set at a predetermined temperature, support a cylinder-shaped body of the workpiece on the outer peripheral face; and a flare-molding step of flare molding a flange by inserting an inner peripheral mold, which is set at a higher temperature than the predetermined temperature of the outer peripheral mold, into a to-be-molded portion on the inner peripheral side, and by relatively moving the outer peripheral mold and the inner peripheral mold in the axial direction to make a counter-welding-face forming portion and a welding-face forming portion clamp the to-be-molded portion between them in the axial direction.

Abstract: The resinous filler port includes: a filler-port body including a nozzle insertion port through which a filler nozzle is insertable, a fuel supply port supplying a fuel supplied from the filler nozzle to a fuel tank by way of a filler tube, and a vapor inlet port letting flow in vapors arising from the fuel and passing through a breather tube from a side of the fuel tank; a joint formed to penetrate through from one of opposite ends thereof to another one of the opposite ends, fitted undetachably into and around the vapor inlet port at the one of the opposite ends, and connected with the breather tube at the other one of the opposite ends; and a flow control valve accommodated inside the joint, and controlling a flow volume of the vapors flowing into the filler-port body from the breather tube.

Abstract: A filler tube, which is capable of satisfying required functions suitably in compliance with the bellows and non-bellows cylindrical base while securing weld strength and fuel-permeation resistance property in the weld face, is provided. A filler tube includes a non-bellows cylindrical base with a total thickness of from 2 to 4 mm, a bellows with a total thickness of from 0.5 to 3 mm, and a flange having a total thickness of from 3.5 to 5 mm, and including an end face to be welded to a fuel tank. The non-bellows cylindrical base, the bellows, and the flange include inner layers formed so as to have a thickness accounting for from 40 to 60% of the total thicknesses, and formed of high-density polyethylene (or HDPE) serving as the major constituent, intermediate layers exhibiting fuel-permeation resistance property, and outer layers protecting the intermediate layers.

Abstract: A filler tube including a cylindrical body and flange is manufactured using a cylindrical workpiece. A material forms an outermost layer in the cylindrical body and flange of the cylindrical workpiece. Dividable molds move at a first speed upon adhering the cylindrical workpiece onto the site for forming the cylindrical body, thereby giving the cylindrical body a predetermined diametrical thickness; and then move at a second speed being slower than the first speed upon adhering the cylindrical workpiece onto the other site for forming the flange, thereby filling up the flange with the material and other materials for forming the flange over a diametrical range to be welded onto the fuel tank while making the diametrical thickness of the flange greater than that of the cylindrical body.

Abstract: A fueling apparatus includes a filler tube including: a fitable cylindrical portion fitted around an outer peripheral face on a filler neck's outlet side; a tapered cylindrical portion formed to have a major diameter on one of the opposite sides adjacent to the fitable cylindrical portion, and formed to have a minor diameter on the other opposite side across from the fitable cylindrical portion; and a minor-diameter cylindrical portion connected to the tapered cylindrical portion on the minor-diameter side, formed to have a minor diameter being smaller than that of the fitable cylindrical portion, and formed to have a predetermined inside diameter being set up based on a fuel distribution condition from the filler neck to the fuel tank. The filler neck is formed to have an outlet inside diameter being larger than the predetermined inside diameter in the minor-diameter cylindrical portion of the filler tube.

Abstract: A manufacturing process for filler tube includes: a workpiece arrangement step of arranging a workpiece onto an outer peripheral mold not only to axially lock a to-be-locked portion with respect to a locking portion but also so as to make the outer peripheral mold, which is set at a predetermined temperature, support a cylinder-shaped body of the workpiece on the outer peripheral face; and a flare-molding step of flare molding a flange by inserting an inner peripheral mold, which is set at a higher temperature than the predetermined temperature of the outer peripheral mold, into a to-be-molded portion on the inner peripheral side, and by relatively moving the outer peripheral mold and the inner peripheral mold in the axial direction to make a counter-welding-face forming portion and a welding-face forming portion clamp the to-be-molded portion between them in the axial direction.

Abstract: A filler tube, which is capable of satisfying required functions suitably in compliance with the bellows and non-bellows cylindrical base while securing weld strength and fuel-permeation resistance property in the weld face, is provided. A filler tube includes a non-bellows cylindrical base with a total thickness of from 2 to 4 mm, a bellows with a total thickness of from 0.5 to 3 mm, and a flange having a total thickness of from 3.5 to 5 mm, and including an end face to be welded to a fuel tank. The non-bellows cylindrical base, the bellows, and the flange include inner layers formed so as to have a thickness accounting for from 40 to 60% of the total thicknesses, and formed of high-density polyethylene (or HDPE) serving as the major constituent, intermediate layers exhibiting fuel-permeation resistance property, and outer layers protecting the intermediate layers.

Abstract: The resinous filler port includes: a filler-port body including a nozzle insertion port through which a filler nozzle is insertable, a fuel supply port supplying a fuel supplied from the filler nozzle to a fuel tank by way of a filler tube, and a vapor inlet port letting flow in vapors arising from the fuel and passing through a breather tube from a side of the fuel tank; a joint formed to penetrate through from one of opposite ends thereof to another one of the opposite ends, fitted undetachably into and around the vapor inlet port at the one of the opposite ends, and connected with the breather tube at the other one of the opposite ends; and a flow control valve accommodated inside the joint, and controlling a flow volume of the vapors flowing into the filler-port body from the breather tube.

Abstract: A weld joint has a weld portion for being welded and bonded to a rim portion around an opening of a resin fuel tank. The weld portion is made of a resin alloy material that is obtained by alloying EVOH or PA with a modified HDPE. A highly-weldable layer is provided in an extremity portion of the weld portion throughout an entire circumference of the weld portion. The highly-weldable layer is made of HDPE and/or a modified HDPE having good weldability to the resin fuel tank. An extremity end surface of the highly-weldable layer serves as a weld surface for welding the weld portion to the resin fuel tank.

Abstract: Retainer assembly has a pair of retainers that are disposed on diametrically opposite sides of a passage way of an annular engaging projection of a pipe, and release arms that are provided on the retainers, respectively. Each of the retainers has a fixing end portion integrally connected to and supported by a pipe retainer portion, and a free end including an engaging portion for snap-engaging with the annular engaging projection. Each of the release arms has a cross-sectional shape for allowing a pressure on the release arm in a longitudinal direction, when being pressed radially inwardly from outside.

Abstract: A rubber composition for an automotive non-water liquid delivery hose, which has good adhesion, comprises (A) chloroprene rubber, and (B) ethylene-propylene-diene terpoylymer containing 3% to 11% by weight of ethylidene norbornene and having a Mooney viscosity (ML1+4 at 100° C.) in the range of 20 to 150, wherein the mixture ratio by weight of the component (A) and the component (B) is set in the range of (A)/(B)=97/3 to 75/25.

Abstract: A piping member is mounted in a mounting hole of one panel by a first holder and in a mounting hole of the other panel by a second holder, respectively. Each of the first and the second holders has a through-hole for receiving the piping member therethrough, and a fit-in projecting portion that is fitted in the mounting hole so as to be positioned. Each of the first and the second holders also has a resilient lug and a collar portion for cooperatively clamping the panel with its inner and outer surfaces therebetween. The first holder holds the piping member relatively movably axially with respect to the first holder therethrough, while the second holder securely fixes the piping member axially with respect to the second holder therethrough.

Abstract: A rubber composition for an automotive non-water liquid delivery hose, which has good adhesion, comprises (A) chloroprene rubber, and (B) ethylene-propylene-diene terpoylymer containing 3% to 11% by weight of ethylidene norbornene and having a Mooney viscosity (ML1+4 at 100° C.) in the range of 20 to 150, wherein the mixture ratio by weight of the component (A) and the component (B) is set in the range of (A)/(B)=97/3 to 75/25.

Abstract: A resin fuel tank has an annular welded portion around an opening formed in the fuel tank. A resin weld joint has an annular weld portion. The weld joint is mounted to the fuel tank by bonding the weld portion of the weld joint to the annular welded portion of the fuel tank through application of heat-welding under pressure. The fuel tank is provided with reinforcing ribs arranged radially around the annular welded portion.