JPH0476962U

JPH0476962U -

Info

Publication number: JPH0476962U
Application number: JP11972390U
Authority: JP
Priority date: 1990-11-15
Filing date: 1990-11-15
Publication date: 1992-07-06
Anticipated expiration: 2005-11-15
Also published as: JP2504173Y2

Description

[Brief explanation of the drawing]

第１図は第１の実施例を示し、アウタパイプの
先端側に嵌着した防塵キヤツプの縦断面図、第２
図および第３図は第２の実施例を示し、第２図は
アウタパイプに嵌着した防塵キヤツプの縦断面図
、第３図は第２図中の矢示−方向の断面図、
第４図および第５図は従来技術を示し、第４図は
燃料タンクに設けた燃料ポンプ装置の縦断面図、
第５図は吐出ポート内に設けたチエツク弁の縦断
面図である。２……燃料ポンプ、２Ａ……燃料ポンプ本体、
２Ｂ……モータ部、２Ｃ……ポンプ部、２Ｅ……
吐出ポート、４……チエツク弁、５……アウタパ
イプ、５Ａ……拡径部、５Ｂ……接続部、１１，
２１……防塵キヤツプ、１１Ｂ……通気孔、１２
……圧力逃し弁、１２Ａ……弁体、１２Ｃ……弁
ばね、１２Ｄ……抜け止め部、２１Ｃ……係合突
起、２１Ｄ……エア抜き溝、２２……エア通路。 FIG. 1 shows the first embodiment, a vertical sectional view of the dustproof cap fitted on the tip side of the outer pipe, and a second embodiment.
2 and 3 show the second embodiment, FIG. 2 is a longitudinal cross-sectional view of the dustproof cap fitted on the outer pipe, FIG. 3 is a cross-sectional view in the direction indicated by the arrow in FIG.
4 and 5 show the prior art, and FIG. 4 is a vertical sectional view of a fuel pump device installed in a fuel tank;
FIG. 5 is a longitudinal sectional view of the check valve provided in the discharge port. 2...Fuel pump, 2A...Fuel pump body,
2B...Motor part, 2C...Pump part, 2E...
Discharge port, 4... Check valve, 5... Outer pipe, 5A... Expanded diameter part, 5B... Connection part, 11,
21...Dust-proof cap, 11B...Vent hole, 12
. . . Pressure relief valve, 12A .

Claims

[Claims for Utility Model Registration] (1) A discharge port having a residual pressure holding valve on one end side is provided, and is connected to a fuel pump body having a built-in motor part and a pump part, and the discharge port of the fuel pump body, A fuel pump device comprising an outer pipe that discharges fuel discharged from the discharge port to the outside of the fuel tank, and a dustproof cap that is fitted on the tip side of the outer pipe and prevents foreign matter from entering the outer pipe. . A fuel pump device, wherein the dustproof cap is provided with a pressure relief valve that allows air in the outer pipe to flow outward and prevents air from flowing in the opposite direction. (2) A fuel pump body that is provided with a discharge port having a residual pressure holding valve on one end side and has a built-in motor part and a pump part, and a fuel pump body that is connected to the discharge port of the fuel pump body and that is discharged from the discharge port. In a fuel pump device comprising an outer pipe for discharging fuel to the outside of the fuel tank, and a dust-proof cap fitted on the tip side of the outer pipe to prevent foreign matter from entering the outer pipe, the inner peripheral side of the dust-proof cap is A small air passage is formed between a plurality of engagement protrusions that are removably engaged with the outer periphery of the distal end of the outer pipe and the outer periphery of the outer pipe that is located between the engagement protrusions. A fuel pump device characterized by being provided with an air vent groove.