JPS63174591U

JPS63174591U -

Info

Publication number: JPS63174591U
Application number: JP16877986U
Authority: JP
Priority date: 1986-11-01
Filing date: 1986-11-01
Publication date: 1988-11-11

Description

[Brief explanation of the drawing]

第１図ないし第４図はこの考案の実施例を示し
、第１図は電動燃料ポンプの要部縦断面図、第２
図は第１図のＡ―Ａ線断面図、第３図は別の実施
例の要部縦断面図、第４図は第３図のＢ―Ｂ線断
面図である。第５図は従来の電動燃料ポンプの縦
断面図を示す。４…モーター室、６…アーマチユア、７…マグ
ネツト、１４…羽根車、１５…羽根溝、２１…カ
バー、２２…ロワー・ボデー、２３…凹部、２４
…外周シール部、２５…内周シール部、ｌ_１…外
周シール部の直径、ｌ_２…羽根溝内周の直径。 Figures 1 to 4 show an embodiment of this invention, with Figure 1 being a longitudinal sectional view of the main parts of the electric fuel pump, and Figure 2
The figures are a cross-sectional view taken along the line AA in FIG. 1, FIG. 3 is a vertical cross-sectional view of a main part of another embodiment, and FIG. 4 is a cross-sectional view taken along the line B--B in FIG. FIG. 5 shows a longitudinal sectional view of a conventional electric fuel pump. 4... Motor chamber, 6... Armature, 7... Magnet, 14... Impeller, 15... Vane groove, 21... Cover, 22... Lower body, 23... Recess, 24
...Outer seal part, 25...Inner seal part, _l1 ...Diameter of outer seal part, _l2 ...Diameter of inner circumference of blade groove.

Claims

[Scope of utility model registration request]

An electric fuel pump that is equipped in a fuel tank and is comprised of a motor chamber equipped with a drive motor, and a pump chamber equipped with an impeller having a blade groove formed in its outer periphery and driven by the drive motor. ,
A recess is formed on each surface of the lower body and the cover where both surfaces of the impeller face each other, and an outer periphery and an inner periphery of the recess are defined by a linear seal portion that slides on the surface of the impeller, and An electric fuel pump characterized in that the diameter of the outer seal portion is slightly larger than the diameter of the inner circumference of the vane groove.