Abstract: There is provided a fuel tank including: a fuel tank main body enclosed by a floor wall, side walls and an upper wall; and a separator including a strut, a first plate portion in which a first penetrating hole that penetrates in a plate thickness direction is formed, and a second plate portion in which a second penetrating hole that penetrates in a plate thickness direction is formed, the second plate portion sandwiching the strut with the first plate portion and extending in a diametric direction at an opposite side of the strut from a side thereof at which the first plate portion is disposed, wherein at least one of shapes, sizes or numbers of the first penetrating hole and the second penetrating hole is set to be different such that fluid resistances at the first plate portion and the second plate portion are different.

Abstract: A fuel tank includes a fuel tank main body portion, a first supporting pillar portion, and a second supporting pillar portion. The first supporting pillar portion is provided at a vehicle rear side of an inner side of the fuel tank main body portion. The second supporting pillar portion is provided at a vehicle front side of the first supporting pillar portion at the inner side of the fuel tank main body portion and is longer in the vehicle vertical direction than the first supporting pillar portion is in the vehicle vertical direction.

Abstract: There is provided a fuel tank including: a fuel tank main body enclosed by a floor wall, side walls and an upper wall; and a separator including a strut, a first plate portion in which a first penetrating hole that penetrates in a plate thickness direction is formed, and a second plate portion in which a second penetrating hole that penetrates in a plate thickness direction is formed, the second plate portion sandwiching the strut with the first plate portion and extending in a diametric direction at an opposite side of the strut from a side thereof at which the first plate portion is disposed, wherein at least one of shapes, sizes or numbers of the first penetrating hole and the second penetrating hole is set to be different such that fluid resistances at the first plate portion and the second plate portion are different.

Abstract: A structure for mounting a fuel tank to a vehicle, the structure includes: a fuel tank having a fuel tank body and a strut that interconnects, inside the fuel tank, a bottom wall and an upper wall of the fuel tank body; a tank band disposed at a lower side of the fuel tank and supporting the fuel tank; and a reinforcement member disposed at the lower side of the fuel tank. The strut is attached to the bottom wall at a strut attachment portion formed at the bottom wall, and at least one of the tank band and the reinforcement member is positioned at a vehicle lower side of the strut attachment portion and the at least one of the tank band and the reinforcement member overlaps at least part of the strut attachment portion.

Abstract: A fuel tank includes a fuel tank main body portion, a first supporting pillar portion, and a second supporting pillar portion. The first supporting pillar portion is provided at a vehicle rear side of an inner side of the fuel tank main body portion. The second supporting pillar portion is provided at a vehicle front side of the first supporting pillar portion at the inner side of the fuel tank main body portion and is longer in the vehicle vertical direction than the first supporting pillar portion is in the vehicle vertical direction.

Abstract: A vehicle fuel tank includes: a fuel tank body including a first wall and a second wall facing the first wall; and a support column member disposed in the inside of the fuel tank body and extending from the first wall to the second wall. The first wall includes a first projection projecting toward an inside of the fuel tank body. A first end of the support column member in a longitudinal direction of the support column member is welded to the first projection. A second end of the support column member in the longitudinal direction is welded to the second wall. The support column member includes a first deformation-start portion located at a position closer to the first projection than to a center of the support column member in the longitudinal direction.

Abstract: A blow molding device and method capable of forming a blow molded article having a built-in part with a good yield rate. The blow molding device has a die core, a blow mold, a parison holding unit and a built-in part holding unit. The parison holding unit has parison expanders and a parison outer holding plate. The built-in part holding unit has an airtight guide tube and a holding rod. After a lower end of a parison is expanded with a plurality of parison expanders, and an upper end of the airtight guide tube is inserted in the lower end of the parison, the lower end of the parison is held between the upper end of the airtight guide tube and the parison outer holding plate, and the pre-blowing is carried out. After the built-in part is positioned in an interior space of the parison, and the parison and built-in part are held between the slide cores, the blow mold is closed and blowing is carried out.

Abstract: A fuel tank for an automobile, which is formed by blow molding, in which a built-in part is mounted, and which has an outer wall composed of a synthetic resin, includes a plurality of mounting members adapted to mount the built-in part provided on the built-in part so as to be fusion-bonded to an inner surface of an outer wall of the fuel tank. An abutment portion is formed on each of the mounting members for abutting the inner surface of the outer wall of the fuel tank, and the abutment portion has an abutment surface and a plurality of abutment pins, each projecting from the abutment surface towards the inner surface of the outer wall of the fuel tank. A stress-absorbing part is provided in the abutment pins, the abutment surface or the outer wall of the fuel tank.

Abstract: A blow-molding mold to be used for forming a tank by blow-molding comprises an outer wall of the tank having two neighboring tank projection portions and a tank recessed portion formed between the two neighboring tank projection portions, the blow-molding mold including a first mold recessed portion formed inside surface side which forms a cavity and forming one of the two neighboring tank projection portions, a second mold recessed portion forming the other of the two neighboring tank projection portions and a mold projection portion provided between the first and the second mold recessed portions and forming the tank recessed portion, wherein a projection surface recessed portion or a projection surface projection portion is formed at an area of an outer surface of the mold projection portion with which a parison is brought into contact.

Abstract: A blow molding device and method capable of forming a blow molded article having a built-in part with a good yield rate. The blow molding device has a die core, a blow mold, a parison holding unit and a built-in part holding unit. The parison holding unit has parison expanders and a parison outer holding plate. The built-in part holding unit has an airtight guide tube and a holding rod. After a lower end of a parison is expanded with a plurality of parison expanders, and an upper end of the airtight guide tube is inserted in the lower end of the parison, the lower end of the parison is held between the upper end of the airtight guide tube and the parison outer holding plate, and the pre-blowing is carried out. After the built-in part is positioned in an interior space of the parison, and the parison and built-in part are held between the slide cores, the blow mold is closed and blowing is carried out.

Abstract: A blow molding device capable of forming a blow molded article having a built-in part with a good yield rate, and a blow molding method. The blow molding device has a blow mold, a parison holding unit and a built-in part holding unit. The parison holding unit has parison expanders and a parison outer holding plate. The built-in part holding unit has an airtight guide tube and a holding rod. After a lower end of a parison is expanded with a plurality of parison expanders, and an upper end of the airtight guide tube is inserted in the lower end of the parison, the lower end of the parison is held between the upper end of the airtight guide tube and the parison outer holding plate, and the preblowing is carried out. After the built-in part is positioned in an interior space of the parison, and the parison and built-in part are held with the slide cores, the holding rod is removed from the blow mold.

Abstract: A fuel tank capable of strongly fusion-bonding a built-in part to an inner surface of an outer wall thereof while protecting the outer wall even when an impact, etc. are applied thereto. In the fuel tank for a motor vehicle, which is formed by blow molding, in which the built-in part is mounted, and which has the outer wall composed of a synthetic resin, a plurality of mounting members adapted to mount the built-in part to the fuel tank are provided on the built-in part so as to be fusion-bonded to the inner surface of the outer wall of the fuel tank. An abutment portion is formed on each of the mounting members for contacting the inner surface of the outer wall of the fuel tank, and an abutment surface and a plurality of abutment pins, each projecting from the abutment surface, are formed in the abutment portion.

Abstract: A fuel tank capable of strongly fusion-bonding a built-in part to an inner surface of an outer wall thereof while protecting the outer wall even when an impact, etc. are applied thereto. In the fuel tank for a motor vehicle, which is formed by blow molding, in which the built-in part is mounted, and which has the outer wall composed of a synthetic resin, a plurality of mounting members adapted to mount the built-in part to the fuel tank are provided on the built-in part so as to be fusion-bonded to the inner surface of the outer wall of the fuel tank. An abutment portion is formed on each of the mounting members for contacting the inner surface of the outer wall of the fuel tank, and an abutment surface and a plurality of abutment pins, each projecting from the abutment surface, are formed in the abutment portion.