초록 ▼

A check valve attached to an inner wall of a main body of a fuel tank ensures a sufficient seal of the main body from outside, without increasing the required number of parts. The check valve communicates with a fuel conduit of a fuel inlet pipe and functions to prevent liquid fuel and fuel vapor in

A check valve attached to an inner wall of a main body of a fuel tank ensures a sufficient seal of the main body from outside, without increasing the required number of parts. The check valve communicates with a fuel conduit of a fuel inlet pipe and functions to prevent liquid fuel and fuel vapor in the main body from flowing through the fuel inlet pipe and being released to the outside. The check valve is opened by a flow of fuel in the fuel inlet pipe and allows the flow of fuel to be introduced into the main body. The check valve includes a casing with a fuel outlet, a valve disc, and a fixation plate. The valve disc is movable between an open position and a closed position to open and close the fuel outlet of the casing. The fixation plate has one end inserted in an end of the casing and the other end welded to the main body. This arrangement enables the main body to be securely sealed from the outside.

대표청구항 ▼

[ What is claimed is:] [1.]1. A check valve attached to an inner wall of a main body of a fuel tank, in which fuel is kept, and arranged proximate to a fuel outlet of a fuel inlet pipe, through which a supply of fuel is ejected into said main body, said check valve comprising:a fixation member havin

[ What is claimed is:] [1.]1. A check valve attached to an inner wall of a main body of a fuel tank, in which fuel is kept, and arranged proximate to a fuel outlet of a fuel inlet pipe, through which a supply of fuel is ejected into said main body, said check valve comprising:a fixation member having a seat designed to surround said fuel outlet and formed to attach said check valve to said inner wall of said fuel tank; anda valve plate attached to said fixation member and movable between an open position and a closed position to open and close said fuel outlet,wherein said valve plate comprisesa valve element seated on said seat in a closed position and removed from said seat in an open position to close and open said fuel outlet;an arm linked with said valve element; andan attachment connected with said arm and formed to attach said valve plate to said casing,wherein said valve element, said arm, and said attachment are integrally formed from a thin plate having elasticity, and said arm to presses said valve element against said seat to cause said valve element to be seated on said seat in said closed position, said arm causing said valve element to be removed from said seat and thereby setting said valve element in said open position when said valve element receives a pressure of a flow of fuel applied thereto during fueling.