JPS62179381U

JPS62179381U -

Info

Publication number: JPS62179381U
Application number: JP6729886U
Authority: JP
Priority date: 1986-05-02
Filing date: 1986-05-02
Publication date: 1987-11-14

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例であるベーンポンプ
を示す拡大断面図、第２図はその分解斜視図、第
３図はそのベーンポンプが使用されている燃料ポ
ンプを示す縦断面図である。１……燃料ポンプ、２……ベーンポンプ、３…
…モータ、４……ヨーク、５……回転軸、６……
アーマチユア、７……コンミユテータ、８……ブ
ラシ、９……マグネツト、１０……送出口、１１
……ポンプケーシング、１２……ポンププレート
、１３……ポンプリング、１４……ポンプヘツド
、１５……ポンプ室、１６……ロータ、１７……
ベーン溝、１８……ローラ（ベーン）、１９……
圧力室、２０……吐出口、２１……連絡路、２２
……圧縮行程側の高圧導入部、２３……連絡部、
２４……吸込口、２５……インレツトパイプ、２
６……凹部、２７……吸込行程側の高圧導入溝部
。 FIG. 1 is an enlarged sectional view showing a vane pump as an embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a longitudinal sectional view showing a fuel pump in which the vane pump is used. 1... Fuel pump, 2... Vane pump, 3...
...Motor, 4...Yoke, 5...Rotating shaft, 6...
Armature, 7...Commutator, 8...Brush, 9...Magnet, 10...Outlet port, 11
... Pump casing, 12 ... Pump plate, 13 ... Pump ring, 14 ... Pump head, 15 ... Pump chamber, 16 ... Rotor, 17 ...
Vane groove, 18...Roller (vane), 19...
Pressure chamber, 20...Discharge port, 21...Communication path, 22
...High pressure introduction part on the compression stroke side, 23... Communication part,
24... Suction port, 25... Inlet pipe, 2
6... recess, 27... high pressure introduction groove on the suction stroke side.

Claims

[Scope of utility model registration request]

A pump chamber, a rotor rotatably disposed in the pump chamber, a plurality of grooves provided on the outer periphery of the rotor, vanes fitted into these grooves so as to be able to move forward and backward, and spaces between adjacent vanes. , a pressure chamber formed by the pump chamber and the rotor, whose volume increases or decreases as the rotor rotates, and a suction port communicating with the pressure chamber whose volume gradually increases;
In a vane pump equipped with a discharge port communicating with a pressure chamber whose volume is reduced, any of the vanes is behind a vane located at the suction port in a phase of the rotor located at the discharge port. A vane pump characterized in that a high pressure introduction groove is formed in the pump chamber to introduce high pressure into the groove of the vane so that pressure is applied.