Abstract: A fuel tank includes a built-in component having a head portion, a neck portion, and a shoulder portion, the built-in component being anchored to a tank body by blowing air from outside a parison to cause the parison wrap around the neck portion during molding of the tank body. A slit extending in one direction only is formed on a surface of the shoulder portion as an air vent path.

Abstract: A fuel tank includes a tank body and a built-in component, which has a head portion, a neck portion, and a shoulder portion, the built-in component being anchored to the tank body with a parison wrapped around the neck portion during molding of the tank body. The head portion and the neck portion are formed with at least one hollowed portion, which is open to an end surface of the head portion, and a cap member is provided to seal an opening of the at least one hollowed portion.

Abstract: A fuel tank includes a tank body and a built-in component, which has a head portion, a neck portion, and a shoulder portion, the built-in component being anchored to the tank body with a parison wrapped around the neck portion during molding of the tank body. The head portion and the neck portion are formed with at least one hollowed portion, which is open to an end surface of the head portion, and a cap member is provided to seal an opening of the at least one hollowed portion.

Abstract: A fuel tank includes a built-in component having a head portion, a neck portion, and a shoulder portion, the built-in component being anchored to a tank body by blowing air from outside a parison to cause the parison wrap around the neck portion during molding of the tank body. A slit extending in one direction only is formed on a surface of the shoulder portion as an air vent path.

Abstract: The present invention provides a mounting structure for an integrated component to be mounted by snap-fitting on a fuel tank so that it is possible to suppress looseness. This mounting structure for an integrated component of a fuel tank includes: a weld clip which has a tip part having an engaging portion and a base end part to be welded to an inner surface of the fuel tank; an engagement base which is provided to the integrated component to be integrated into the fuel tank, and has a snap-fitting arm to be engaged with the engaging portion by elastic restoring force; and a lock member which is attached to the engagement base so as to be capable of switching from a temporary holding position to a lock position, the temporary holding position allowing an elastic deformation of the snap-fitting arm in a direction to release the engagement with the engaging portion, the lock position preventing the elastic deformation.

Abstract: The present invention provides a mounting structure for an integrated component to be mounted by snap-fitting on a fuel tank so that it is possible to suppress looseness. This mounting structure for an integrated component of a fuel tank includes: a weld clip which has a tip part having an engaging portion and a base end part to be welded to an inner surface of the fuel tank; an engagement base which is provided to the integrated component to be integrated into the fuel tank, and has a snap-fitting arm to be engaged with the engaging portion by elastic restoring force; and a lock member which is attached to the engagement base so as to be capable of switching from a temporary holding position to a lock position, the temporary holding position allowing an elastic deformation of the snap-fitting arm in a direction to release the engagement with the engaging portion, the lock position preventing the elastic deformation.