JPH0256884U

JPH0256884U -

Info

Publication number: JPH0256884U
Application number: JP13600188U
Authority: JP
Priority date: 1988-10-18
Filing date: 1988-10-18
Publication date: 1990-04-24

Description

[Brief explanation of drawings]

第１図および第２図は本考案の実施例を示し、
第１図はカムリング、ポンプロータおよびローラ
等を示す一部破断の斜視図、第２図はローラの縦
断面図、第３図ないし第６図は従来技術を示し、
第３図は第４図中の―線に沿つた燃料ポンプ
の縦断面図、第４図は第３図中の―矢示方向
断面図、第５図はローラの縦断面図、第６図はポ
ンプハウジング、ポンプロータ等の分解斜視図で
ある。１……ケーシング、２……上カバー、４……ポ
ンプハウジング、５……下側ハウジング、５Ａ…
…吸込口、６……上側ハウジング、６Ａ……吐出
口、７……ポンプ室、７Ａ……密閉空間、８……
カムリング、１０……固定シヤフト、１１……電
動モータ、１８……ポンプロータ、１８Ａ……ロ
ーラ溝、３１……ローラ、３１Ａ……ローラ本体
、３１Ｂ，３１Ｃ……中ぐり部、３１Ｄ……補強
隔壁、３２……油膜。 1 and 2 show an embodiment of the present invention,
FIG. 1 is a partially cutaway perspective view showing a cam ring, pump rotor, roller, etc., FIG. 2 is a longitudinal cross-sectional view of the roller, and FIGS. 3 to 6 show the prior art.
Fig. 3 is a longitudinal sectional view of the fuel pump along the line - in Fig. 4, Fig. 4 is a sectional view in the direction of the - arrow in Fig. 3, Fig. 5 is a longitudinal sectional view of the roller, and Fig. 6. FIG. 2 is an exploded perspective view of the pump housing, pump rotor, etc. 1... Casing, 2... Upper cover, 4... Pump housing, 5... Lower housing, 5A...
...Suction port, 6... Upper housing, 6A... Discharge port, 7... Pump chamber, 7A... Sealed space, 8...
Cam ring, 10... Fixed shaft, 11... Electric motor, 18... Pump rotor, 18A... Roller groove, 31... Roller, 31A... Roller body, 31B, 31C... Boring section, 31D... Reinforcement Bulkhead, 32...Oil film.

Claims

[Scope of utility model registration request]

A casing, an upper cover provided at one end of the casing, a pump housing provided at the other end of the casing and having a fuel inlet and outlet, and between the pump housing and the upper cover. an electric motor located in the casing, a pump rotor located in the pump housing and rotated by the electric motor, and having a plurality of roller grooves formed on an outer circumferential side; A roller vane type fuel pump comprising a plurality of rollers disposed in each roller groove of the pump rotor and slidingly in contact with the inner circumferential surface of the pump housing when the pump rotor rotates, causing fuel sucked in from the suction port to be discharged from the discharge port. In the roller vane type fuel pump, each of the rollers is formed into a cylindrical shape using a sintered metal material.