Abstract: In a filler pipe assembly, a holder member secured to an inner wall of a filler pipe is provided with an outer profile of a circular cross section substantially conforming to an inner peripheral wall of the filler pipe and an inner profile defining a bore of a circular cross section eccentric to the outer profile thereof. A relief valve is provided in a part of the holder member defined between the outer profile thereof and the bore owing to an eccentricity of the bore relative to the outer profile. Owing to the eccentric relationship between the outer profile and inner bore of the holder member, a space for a relief valve can be provided in the area where the distance between the inner wall of the bore and the outer profile is the greatest, and this allows the relief valve to be mounted without complicating the structure.

Abstract: An improved fuel tank is disclosed. In the fuel tank, a shock-absorbing member comprising a plurality of foam members is mounted to an in-tank functional component provided inside a resin fuel tank body. When the fuel inside the tank sloshes up and down, the fuel strikes the shock-absorbing member, causing the force of the waves to be dispersed, and reducing the fuel sloshing sound created by the sloshing of the fuel.

Abstract: A vaporized fuel processing device attached to a fuel tank, includes a casing for forming an outer shell of the vaporized fuel processing device, a diaphragm valve unit opened at the time of increasing the pressure in the fuel tank, and a vent passage communicating with atmospheric air. In the vaporized fuel processing device, the diaphragm valve unit is disposed in a space formed in the casing.

Abstract: A vehicle fuel supply device including a saddle-shaped fuel tank comprised of a main chamber and an auxiliary chamber. A reservoir is disposed within the main chamber. A main pump is provided within the reservoir. A sub-pump is detachably provided within the reservoir. The fuel in the reservoir is drawn up by an operation of the main pump to supply fuel to an engine. A portion of the drawn-up fuel is utilized to generate a negative pressure, the negative pressure is utilized to transfer the fuel in the auxiliary chamber to the reservoir, and the negative pressure is utilized to introduce the fuel in the main chamber into the reservoir.

Abstract: In an inner structure of a filler neck of a fuel filler tube, a nozzle support section for supporting a nozzle of a fuel filling gun at a gas station includes a pipe member having an inner diameter substantially equal to the outer diameter of the nozzle, and the nozzle is inserted in the pipe member when fueling. Fuel emitted from the nozzle is directed through the pipe member to an outlet end (distal end) of the nozzle support section, at which it starts flowing along an intermediate bent section of the filler tube. Thus, even when the fuel filling gun is not sufficiently inserted in the filler neck, i.e. inserted short of a standard inserted amount, the fuel is allowed to properly jet out in the bent section just as when the fuel filling gun is sufficiently inserted in the filler neck up to the standard inserted amount.

Abstract: A joint part includes a connection part weldable on the tank and a tube part including an inner circumferential face. An inner tube is fitted inside and in contact with the inner circumferential face. The tube and the inner tube include materials having different swelling rates when exposed to the fuel to be stored in the tank. An end of the tube, and an end of the inner tube corresponding in an axial direction with the end of tube, include slopes therearound in contact with each other. The slopes are inclined from the axial direction. When the tube and the inner tube swell due to being wet with the fuel, the slopes have a relative displacement in the axial direction and in a radial direction of the tube and the inner tube, with contact therebetween.

Abstract: A vehicle fuel supply device including a saddle-shaped fuel tank comprised of a main chamber and an auxiliary chamber. A reservoir is disposed within the main chamber. A main pump is provided within the reservoir. A sub-pump is detachably provided within the reservoir. The fuel in the reservoir is drawn up by an operation of the main pump to supply fuel to an engine. A portion of the drawn-up fuel is utilized to generate a negative pressure, the negative pressure is utilized to transfer the fuel in the auxiliary chamber to the reservoir, and the negative pressure is utilized to introduce the fuel in the main chamber into the reservoir.

Abstract: In a fuel tank including: a first fuel chamber receiving liquid fuel; a communication chamber communicated with the first fuel chamber and having a bottom higher than a bottom of the first fuel chamber; a second fuel chamber communicated with the communication chamber, having a bottom lower than the bottom of the communication chamber; and a sleeve member having a lower end opening toward the bottom of the communication chamber, fuel evaporative emissions are discharged while the liquid fuel is supplied to the first fuel chamber. The first fuel chamber, the communication chamber, and the second fuel chamber are molded integrally by resin blow molding. The communication chamber is provided with a protrusion which is convex when viewed from the inside of the communication chamber and a depression which is concave when viewed from the outside of the communication chamber, at a first fuel chamber side relative to the sleeve member in the communication chamber.

Abstract: A fuel tank in which at least a part of a fuel storing unit is formed of a flexible film is provided with a main chamber having a variable volume by deforming according to a storing amount of a fuel, a sub-chamber having a volume which is kept substantially constant, and a fuel pump housed inside the sub-chamber. The main chamber and the sub-chamber are integrally formed to form the fuel storing unit.

Abstract: In a filler pipe assembly, a holder member (13. 15) secured to an inner wall of a filler pipe (2) is provided with an outer profile of a circular cross section substantially conforming to an inner peripheral wall of the filler pipe and an inner profile defining a bore (17) of a circular cross section eccentric to the outer profile thereof. A relief valve (30) is provided in a part of the holder member defined between the outer profile thereof and the bore owing to an eccentricity of the bore relative to the outer profile. Owing to the eccentric relationship between the outer profile and inner bore of the holder member, a space for a relief valve can be provided in the area where the distance between the inner wall of the bore and the outer profile is the greatest, and this allows the relief valve to be mounted without complicating the structure.

Abstract: A portion of the plastic container T where an opening 7 is provided has a flange portion 7a, and provided are a recess provided annularly along a peripheral edge of the opening 7 at an outside of the plastic container body 2, with an annular member being embedded integrally in the recess, a cover 1 resting against the flange portion to close the opening 7, a seal 14 provided between the flange portion 7a and the cover 1 to prevent a leak, and an annular retainer 9 fastened to the annular member 8 while resting against an external surface of the cover 1. This allows the opening 7 provided in the plastic container T and the cover 1 to be fastened together firmly with excellent and stable hermetical sealing performance.

Abstract: A fuel tank in which at least a part of a fuel storing unit is formed of a flexible film is provided with a main chamber having a variable volume by deforming according to a storing amount of a fuel, a sub-chamber having a volume which is kept substantially constant, and a fuel pump housed inside the sub-chamber. The main chamber and the sub-chamber are integrally formed to form the fuel storing unit.

Abstract: A joint part includes a connection part weldable on the tank and a tube part including an inner circumferential face. An inner tube is fitted in the inner circumferential face and in contact with the inner circumferential face. The tube and the inner tube include materials having different swelling rates against a fuel to be stored in the tank. An end of the tube and a corresponding end of the inner tube in an axial direction of the tube and the inner tube include slopes therearound in contact with each other. The slopes are inclined from the axial direction. When the tube and the inner tube swell due to wet with the fuel, the slopes have relative displacement in the axial direction and a radial direction of the tube and the inner tube with contact therebetween.

Abstract: In order to solve the problem of a conventional attachment structure of a fuel tank made of resin, the present invention is an attachment structure of a component of a fuel tank made of resin where a connection portion with a tank main body made of resin is formed of a thermally depositable material, and which tank comprises a joint portion connected with the tank main body by a thermal deposition and an inner tubular member supported by the joint portion and housed in the tank main body, wherein a movement regulation mechanism for regulating a movement in an axial direction of the inner tubular member for the joint portion is provided at least at one of the joint portion and the inner tubular member, and the joint portion and the inner tubular member are formed by an integral molding.

Abstract: A grounding structure of a fuel tank equipped with a lid body closing an opening of the fuel tank made of resin is characterized by being equipped with a ring-shaped member made of metal fixed on the periphery of the opening, and a retainer made of metal fixing the lid body on the ring-shaped member, wherein an electrically grounded member in the vicinity of the lid body is electrically connected to at least one of the ring-shaped member and retainer, and grounding is performed through at least one of the ring-shaped member and retainer.

Abstract: An earthing structure of a fuel tank equipped with a lid body closing an opening of the fuel tank made of resin is characterized by being equipped with a ring-shaped member made of metal fixed on the periphery of the opening, and a retainer made of metal fixing the lid body on the ring-shaped member, wherein an electrically earthed member in the vicinity of the lid body is electrically connected to at least one of the ring-shaped member and retainer, and earthing is performed through at least one of the ring-shaped member and retainer.

Abstract: A vaporized fuel processing device attached to a fuel tank, includes a casing for forming an outer shell of the vaporized fuel processing device, adiaphragm valve unit opened at the time of increasing the pressure in the fuel tank, and a vent passage communicating with atmospheric air. In the vaporized fuel processing device, the diaphragm valve unit is disposed in a space formed in the casing.

Abstract: A fuel cylinder attaching structure in a motorcar can cope with a large expansive deformation of the fuel cylinder and fixedly support the fuel cylinder surely. The structure comprises a pair of front and rear supporting frame members fixed on a car-body; a fixing band fixed to the front and rear supporting frame members, wound round the fuel cylinder; and both ends of the fixing band connected to each other with a spring interposed, positioned on a vertical bisection of a line segment extending between the front and rear attach-supporting sections.