JPS6390092U

JPS6390092U -

Info

Publication number: JPS6390092U
Application number: JP18279386U
Authority: JP
Priority date: 1986-11-29
Filing date: 1986-11-29
Publication date: 1988-06-11
Anticipated expiration: 2001-11-29
Also published as: JPH0533755Y2

Description

[Brief explanation of the drawing]

第１図はこの考案のインタンク式燃料ポンプの
好適一実施例を示す概略縦断面図、第２図は第１
図の―線矢視断面図、第３図は第１図の―
線断面図、第４図は第２実施例を示す概略断面
図、第５図は第４図の要部詳細図、第６図は第５
図の―線断面図、第７図は第３実施例を示す
概略断面図、第８図乃至第１０図は従来例を示す
概略図、第１１図は従来のインタンク式燃料ポン
プの燃料圧力の変化を示す性能図、第１２図は関
連する従来のインタンク式燃料ポンプの従来例を
示す概略断面図である。図中、１はポンプハウジング、２は上部ケーシ
ング、３は下部ケーシング、６はケーシング部材
、８はポンプ室、９はインペラー、１３は固定軸
、１５は吸込口、１６はストレーナ、１７は送油
室、１８ａ，ｂは送油口、１９はリリーフバルブ
、２０はリークオフ通路、２１は吐出通路、２２
はチエツク弁、２４は積層鉄芯、２５はコイル、
２６は電動子、３０は継手部材、３１，３５は爪
部、３７は永久磁石、３８はブラシ、４１は冷却
通路、５０はポンプ部である。 FIG. 1 is a schematic vertical sectional view showing a preferred embodiment of the in-tank fuel pump of this invention, and FIG.
Figure 3 is a cross-sectional view of Figure 1.
4 is a schematic sectional view showing the second embodiment, FIG. 5 is a detailed view of the main part of FIG. 4, and FIG. 6 is a schematic sectional view showing the second embodiment.
Figure 7 is a schematic cross-sectional view showing the third embodiment, Figures 8 to 10 are schematic views showing the conventional example, and Figure 11 is the fuel pressure of the conventional in-tank fuel pump. 12 is a schematic sectional view showing a conventional example of a related conventional in-tank fuel pump. In the figure, 1 is a pump housing, 2 is an upper casing, 3 is a lower casing, 6 is a casing member, 8 is a pump chamber, 9 is an impeller, 13 is a fixed shaft, 15 is a suction port, 16 is a strainer, and 17 is an oil feed 18a and 18b are oil supply ports, 19 is a relief valve, 20 is a leak-off passage, 21 is a discharge passage, 22
is a check valve, 24 is a laminated iron core, 25 is a coil,
26 is a motor element, 30 is a joint member, 31 and 35 are claw parts, 37 is a permanent magnet, 38 is a brush, 41 is a cooling passage, and 50 is a pump part.

Claims

[Claims for Utility Model Registration] (1) A pump housing containing an electric element and a pump portion on a shaft that is immersed in oil stored in a fuel tank and passes through the pump housing; An in-tank fuel pump characterized by being equipped with a cooling passage that cools oil storage or the atmosphere inside the tank by convection using the heat raised in the housing. (2) The in-tank fuel pump according to claim 1, wherein the cooling passage is constituted by a hollow cylindrical body opened with both end portions of the shaft facing into the tank.