JPH046786U

JPH046786U -

Info

Publication number: JPH046786U
Application number: JP4629990U
Authority: JP
Priority date: 1990-04-27
Filing date: 1990-04-27
Publication date: 1992-01-22

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例のベーンポンプの
順方向側吸込ポートを示す、第３図の−断面
図、第２図は逆方向側吸込ポートを示す、第３図
の−断面図、第３図は第４図の−断面図
、第４図はベーンポンプの全体断面図、第５図は
第４図の−断面図、第６図は従来のベーンポ
ンプのリヤプレートを示す正面図、第７図は第６
図の−断面図である。２……カムリング、３……ロータ、４……ベー
ン、５……フロントプレート（サイド部材）、６
……リヤプレート（サイド部材）、７……導入流
路、７ａ……順方向側導入流路、８ａ……順方向
側吸込ポート、９，１０……吸入室、１３……案
内壁。 1 is a cross-sectional view of FIG. 3 showing a forward suction port of a vane pump according to an embodiment of the invention; FIG. 2 is a cross-sectional view of FIG. 3 showing a reverse suction port; 3 is a sectional view of FIG. 4, FIG. 4 is an overall sectional view of the vane pump, FIG. 5 is a sectional view of FIG. 4, FIG. 6 is a front view showing the rear plate of a conventional vane pump, and FIG. The figure is number 6
FIG. 2...Cam ring, 3...Rotor, 4...Vane, 5...Front plate (side member), 6
. . . rear plate (side member), 7 . . . introduction flow path, 7a . . . forward direction side introduction flow path, 8a .

Claims

[Scope of claim for utility model registration] A cam ring with a cam surface formed on its inner periphery, a rotor housed in this cam ring, a plurality of vanes that protrude from the outer periphery of the rotor and follow the cam surface, and the cam ring and rotor viewed from both sides. a pair of side members that are sandwiched between the cam surface of the cam ring and the rotor and define a plurality of suction chambers by means of vanes; A forward introduction channel is formed substantially perpendicular to the rotational axis and allows hydraulic oil to flow in substantially the same direction as the rotation of the rotor. In a vane pump equipped with a forward suction port recessed in a side member, hydraulic oil is sucked into the inner depth of the downstream end of the forward suction port to prevent air bubbles from accumulating due to cavitation. A vane pump characterized by being provided with a guide wall that guides the user into the chamber.