초록 ▼

An inner diameter of a filler tube is formed smaller than that of a filler neck of a tank main body. Hence, a clearance is thus difficult to be created between inner peripheral surface of the filler tube and the fuel stream which flows through the filler tube upon supply of fuel, and also leakage of

An inner diameter of a filler tube is formed smaller than that of a filler neck of a tank main body. Hence, a clearance is thus difficult to be created between inner peripheral surface of the filler tube and the fuel stream which flows through the filler tube upon supply of fuel, and also leakage of vapor fuel from a fuel filler port can be avoided. In addition, a cylindrical insert whose inner diameter is formed to be substantially equal to its of the filler tube is provided in a neck portion of the filler hose. Accordingly, there exists no portion where the inner diameter is largely changed in the filler neck portion, whereby generation of turbulent flow of the supplied fuel and reduction in a flow rate can be suppressed to their maximum and thus fuel supply performance can be enhanced.

대표청구항 ▼

[ What is claimed is:] [1.] A structure for connecting a filler tube to a fuel tank, comprising:a filler neck formed in a tubular shape, projected from an outer surface of a tank main body, connecting an inside of said tank main body to an outside thereof and having an inner diameter which is larger

[ What is claimed is:] [1.] A structure for connecting a filler tube to a fuel tank, comprising:a filler neck formed in a tubular shape, projected from an outer surface of a tank main body, connecting an inside of said tank main body to an outside thereof and having an inner diameter which is larger than an inner diameter of said filler tube;said filler tube including a connection portion unitary with one end of said filler tube fitted onto an outer peripheral surface of said filler neck; andan insert member disposed in said filler neck and including a fuel flow passage connecting said filler tube to said tank main body and having an inner diameter substantially identical to the inner diameter of said filler tube, one end of the insert member being located proximate an open-end of said filler neck.