JPS63137033U

JPS63137033U -

Info

Publication number: JPS63137033U
Application number: JP2828387U
Authority: JP
Priority date: 1987-02-27
Filing date: 1987-02-27
Publication date: 1988-09-08

Description

[Brief explanation of the drawing]

第１図は燃料タンク部分の概略図、第２図はこ
の考案の逆止弁の実施例を示す断面図、第３図は
この考案の第１の実施例の概略を示す断面図、第
４図は同じく第２の実施例の概略を示す断面図、
第５図は同じく第３の実施例の概略を示す断面図
、第６図は逆止弁の他の実施例を示す断面図であ
る。１…燃料タンク、２…給油パイプ、３…パイプ
の基端部、４…逆止弁、７…ボール、９…小孔、
１４…スプリング、１５…円板。 Fig. 1 is a schematic diagram of the fuel tank portion, Fig. 2 is a sectional view showing an embodiment of the check valve of this invention, Fig. 3 is a sectional view schematically showing the first embodiment of this invention, and Fig. 4 is a sectional view showing an outline of the first embodiment of the invention. The figure is also a sectional view schematically showing the second embodiment,
FIG. 5 is a sectional view schematically showing the third embodiment, and FIG. 6 is a sectional view showing another embodiment of the check valve. DESCRIPTION OF SYMBOLS 1... Fuel tank, 2... Fuel supply pipe, 3... Base end of pipe, 4... Check valve, 7... Ball, 9... Small hole,
14...Spring, 15...Disc.

Claims

[Claims for Utility Model Registration] 1. A float type check valve is provided at the base end of the fuel supply pipe of the fuel tank, and the check valve is closed when the internal pressure of the fuel supply pipe is lower than the internal pressure of the fuel tank. Refueling pipe of the fuel tank configured as follows. 2. The refueling pipe for a fuel tank as set forth in claim 1 of the utility model registration claim, wherein the valve body of the check valve is spherical or disk-shaped. 3. The check valve is installed at an upwardly sloping part of the oil supply pipe, and a valve body with a specific gravity larger than the fuel is installed above the valve seat formed in the oil supply pipe, and a valve body with a specific gravity larger than the fuel is installed below the valve seat of the oil supply pipe. A refueling pipe for a fuel tank according to claim 1 of the registered utility model claim, which is provided with a drain hole. 4. The check valve is installed in the horizontal part of the refueling pipe, and a valve element with a specific gravity equivalent to that of the fuel is attached to the fuel tank side of the valve seat formed inside the refueling pipe, and the valve element is attached to the valve seat by a spring. A refueling pipe for a fuel tank according to Claim 1 of the Utility Model Registration Claim, which is biased toward the side. 5. The fuel according to claim 1 of the utility model registration claim, in which the check valve is installed at a downwardly inclined part of the refueling pipe, and a valve body with a specific gravity smaller than that of the fuel is installed below the valve seat formed in the refueling pipe. Tank refueling pipe.