JPS61134590U

JPS61134590U -

Info

Publication number: JPS61134590U
Application number: JP1689385U
Authority: JP
Priority date: 1985-02-08
Filing date: 1985-02-08
Publication date: 1986-08-22

Description

[Brief explanation of the drawing]

第１図は本考案に係るベーンポンプの一実施例
を示す正面図、第２図は第１図の―線断面図
、第３図はロータ回転数と吐出量との関係を示す
図である。１ａ，２ａ……ポンプハウジング内側面、３…
…ポンプハウジング、４……流体吸入路、５……
流体吐出路、７……リング、７ｂ……リング内周
面、１０……ロータ、１０ｄ……ロータ半径方向
溝、１０ｅ……ロータ円周方向溝、１１……ベー
ン、１２……バツクアツプ流体通路、１２ａ……
流体入口端、１２ｂ……流体出口端、１３……ポ
ンプ室。 FIG. 1 is a front view showing an embodiment of a vane pump according to the present invention, FIG. 2 is a sectional view taken along the line -- in FIG. 1, and FIG. 3 is a diagram showing the relationship between rotor rotation speed and discharge amount. 1a, 2a...inner surface of pump housing, 3...
...Pump housing, 4...Fluid suction path, 5...
Fluid discharge passage, 7...Ring, 7b...Ring inner peripheral surface, 10...Rotor, 10d...Rotor radial groove, 10e...Rotor circumferential groove, 11...Vane, 12...Backup fluid passage , 12a...
Fluid inlet end, 12b...Fluid outlet end, 13...Pump chamber.

Claims

[Claims for Utility Model Registration] A pump housing having a fluid suction passage and a fluid discharge passage, a ring disposed within the pump housing, and the above-mentioned pump housing sandwiching the inner peripheral surface of the ring and the ring from both sides. a rotor disposed in a space defined by two opposing inner surfaces of the ring and driven to rotate around an axis eccentric to the center of the ring; a plurality of vanes that are freely provided and biased radially outward so that their radially outer end surfaces slide against the inner circumferential surface of the ring, the inner circumferential surface of the ring and the outer circumference of the rotor; A pump chamber is defined by the surface and the vane, and fluid is sucked into the pump chamber from the fluid suction path and discharged from the pump chamber into the fluid discharge path by rotation of the rotor. In the vane pump, a circumferential groove is formed in a side surface of the rotor, through which a backup fluid for urging the vane is guided through a backup fluid passage, and the backup fluid passage is connected from inside the ring to inside the housing. The fluid inlet end thereof is opened in an area of the inner circumferential surface of the ring facing the pump chamber at the discharge pressure, and the fluid outlet end thereof is bored in an area of the inner circumferential surface of the housing facing the circumferential groove of the rotor. A vane pump characterized by having an open opening.