JPH0454990U

JPH0454990U -

Info

Publication number: JPH0454990U
Application number: JP9782990U
Authority: JP
Priority date: 1990-09-18
Filing date: 1990-09-18
Publication date: 1992-05-12

Description

[Brief explanation of the drawing]

第１図は本考案の中心をなすプツシユアツプリ
ングの通常状態（組付け前）を示す全体図であり
、第２図はロータを示す全体図であり、特にプツ
シユアツプリング突出部が収納されるためのリセ
スの内容を示すものであり、第３図は第２図に示
すロータのＡＡ断面図である。第４図はリヤハウ
ジングに設けられたプツシユアツプリング組付け
用の溝を示す図である。第５図、第６図はプツシ
ユアツプリング、リヤハウジング、ベーン、ロー
タ、カムリングの組み付け状態を示すベーンポン
プの全体図であり、特に第５図はベーンポンプの
全体縦断面図であり、第６図はその横断面図であ
る。１……プツシユアツプリング、２……リヤハウ
ジング、２１……溝、３……ベーン、４……ロー
タ、４１……リセス、イ……リセス外周、ロ……
リセス内周、５……カムリング、６……フロント
ハウジング、７……回転軸。 Fig. 1 is an overall view showing the normal state (before assembly) of the push-up spring, which is the center of the present invention, and Fig. 2 is an overall view showing the rotor. FIG. 3 is a sectional view taken along line AA of the rotor shown in FIG. 2. FIG. 4 is a diagram showing a groove for assembling a push spring provided in the rear housing. Figures 5 and 6 are overall views of the vane pump showing the assembled state of the push spring, rear housing, vanes, rotor, and cam ring; in particular, Figure 5 is a vertical sectional view of the entire vane pump; is its cross-sectional view. 1... Push-up spring, 2... Rear housing, 21... Groove, 3... Vane, 4... Rotor, 41... Recess, A... Recess outer periphery, B...
Recess inner circumference, 5...cam ring, 6...front housing, 7...rotating shaft.

Claims

[Scope of utility model registration request]

Each pump includes an annular cam ring, a rotor that rotates inside the cam ring, and vanes that fit into radial slits in the rotor and slide in the radial axis direction of the rotor, and partitioned between each vane as the rotor rotates. In a pressure-balanced vane pump that performs pumping action by expanding and contracting the volume of a chamber, it is usually a circular push-up spring made of an elastic material, and is inserted into an elliptical groove provided on the inner side surface of the housing. assembled,
As a result, the outer periphery of the protruding portion of the push-up spring, which has partially protruded from the groove, contacts the inner end of the vane, thereby connecting the outer end of the vane and the inner circumferential surface of the cam ring. A vane pump characterized in that the vane is always pushed out in the radial axis direction of the rotor so that the vane is always in close contact with the rotor.