JPS6153583U

JPS6153583U -

Info

Publication number: JPS6153583U
Application number: JP13667684U
Authority: JP
Priority date: 1984-09-11
Filing date: 1984-09-11
Publication date: 1986-04-10

Description

[Brief explanation of drawings]

第１図は本考案に係わるフユーエルポンプの一
実施例を示す要部縦断面図、第２図は同上のフユ
ーエルポンプの他の実施例を示す要部平面図、第
３図は従来のフユーエルポンプの一例を示す図で
、Ａは要部縦断面図、Ｂは要部平面図である。１３…ロータハウジング、１４，３１…ロータ
、１５，２９…ポンプリング、１６，３４…最小
隙間部、２０…隙間、２４，２７…スプリング、
２８…圧力室、３０…固定ポンプリング、３１…
可動ポンプリング。 Fig. 1 is a longitudinal cross-sectional view of the essential parts showing one embodiment of the fuel pump according to the present invention, Fig. 2 is a plan view of the main parts showing another embodiment of the same fuel pump, and Fig. 3 is the conventional fuel pump. It is a figure which shows an example of a fuel pump, A is a main part longitudinal cross-sectional view, B is a main part top view. 13... Rotor housing, 14, 31... Rotor, 15, 29... Pump ring, 16, 34... Minimum clearance portion, 20... Gap, 24, 27... Spring,
28...pressure chamber, 30...fixed pump ring, 31...
Movable pump ring.

Claims

[Claims for Utility Model Registration] (1) Due to the rotationally driven rotor, the volume of the pump chamber formed between the rotor and the inner wall of the rotor housing changes, and the fuel sucked from the suction side space is transferred to the discharge side space. In a fuel pump configured to discharge, a pump ring, which is one of the constituent members of the rotor housing and is arranged along the circumferential surface of the rotor, is connected to an outer circumferential surface of the rotor and an inner circumferential surface of the pump ring. The pump ring is provided so that it can freely slide in the radial direction through the minimum gap, while the pump ring is always positioned at a proper position, and when a foreign object gets caught in the minimum gap, the pump ring slides in the radial direction. A fuel pump characterized by being provided with a supporting pump ring support device. (2) The pump ring support device is a fuel according to claim 1, which is a utility model registration, and includes a pair of compression springs interposed at two positions opposite to each other in the sliding direction of the pump ring on the outer peripheral surface of the pump ring. pump. (3) The pump ring support device includes a compression spring interposed in one of two positions on the outer peripheral surface of the pump ring that are opposed to each other in the sliding direction of the pump ring, and a fuel discharge side space defined in the other. A fuel pump according to claim 1, which comprises a communicating pressure chamber.