JPS62114186U

JPS62114186U -

Info

Publication number: JPS62114186U
Application number: JP168386U
Authority: JP
Priority date: 1986-01-10
Filing date: 1986-01-10
Publication date: 1987-07-20

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す縦断面図、第
２図は第１図―線に沿う断面図、第３図は凹
溝外周縁と最大没入状態におけるベーン先端との
寸法位置関係の説明図、第４図はシール機構の他
の実施例を示す縦断面図、第５図は従来の圧縮機
（ベーン型流体ポンプ）を示す縦断面図、第６図
は第４図―線に沿う断面図である。２４……ポンプハウジング、２５……フロント
サイドブロツク、２６……リヤサイドブロツク、
２７……カムリング、２９……ロータ、３１……
ベーン、５０……凹所、５０ｄ……凹所の外周縁
、５３……シールプレート、５４，５５……Ｏリ
ング（弾性部材）、Ｄ_１……凹所の外周縁直径、
Ｄ_２……最大没入状態での該ベーン先端とロータ
中心との間の距離を半径とする直径、Ｏ……ロー
タの中心。 Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention, Fig. 2 is a sectional view along the line of Fig. 1, and Fig. 3 is the dimensional positional relationship between the outer periphery of the groove and the tip of the vane in the maximum retracted state. FIG. 4 is a longitudinal sectional view showing another embodiment of the seal mechanism, FIG. 5 is a longitudinal sectional view showing a conventional compressor (vane type fluid pump), and FIG. FIG. 24...Pump housing, 25...Front side block, 26...Rear side block,
27...cam ring, 29...rotor, 31...
Vane, 50... Recess, 50d... Outer periphery of the recess, 53... Seal plate, 54, 55... O ring (elastic member), D ₁ ... Outer periphery diameter of the recess,
_D2 ...Diameter whose radius is the distance between the tip of the vane and the center of the rotor in the maximum retracted state, O...The center of the rotor.

Claims

[Scope of utility model registration request]

A pump housing is formed by fixing a front side block to one end of a cam ring having a cam circumferential surface on its inner surface and a rear side block to the other end, and a rotor supported by a rotating shaft is provided within the pump housing. At the same time, a vane is slidably inserted in a plurality of vane grooves formed in the rotor along the radial direction so as to be able to protrude and retract from the outer peripheral surface of the rotor, and as the rotor rotates, the tip of the vane is brought into sliding contact with the cam ring. In a compressor that performs a pumping action, annular recesses are formed in the inner wall surfaces of the front side block and the rear side block, and the diameter of the outer peripheral edge of the recess is such that the tip of the vane is inward from the outer peripheral surface of the rotor. The distance between the tip of the vane and the center of the rotor in the maximum retracted state is set to a value slightly smaller than the diameter and as close as possible to the diameter, and an annular seal plate is installed in these recesses. A compressor characterized in that these seal plates are fitted together and are brought into airtight pressure contact with both end surfaces of the rotor by the elastic force of an elastic member.