JPH0317291U

JPH0317291U -

Info

Publication number: JPH0317291U
Application number: JP7795289U
Authority: JP
Priority date: 1989-06-30
Filing date: 1989-06-30
Publication date: 1991-02-20

Description

[Brief explanation of drawings]

第１図は本考案に従つたラジアルピストンポン
プの一実施例を示す縦断側面図、第２図は第１図
のＡ−Ａ断面図、第３図は第１図のＢ−Ｂ断面図
、第４図は第１図における吐出弁Ｖの拡大断面図
である。１０……ハウジング、１０ａ……内孔、１０ｂ
……取付孔、１１……シリンダ、１２……ピスト
ン、１２ａ……底壁、１２ｂ……連通孔、１２ｃ
……外周側開口、１３……カム軸、１４……スプ
リング、１９……吐出ポート、２２……プラグ、
２２ａ……貫通孔、２３……弁座部材、２４……
弁部材、２５……スプリング、２６……絞り通路
、Ｒ１……吸入室、Ｒ２……圧力室、Ｖ……吐出
弁。 FIG. 1 is a vertical sectional side view showing an embodiment of a radial piston pump according to the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is a sectional view taken along line BB in FIG. 1. FIG. 4 is an enlarged sectional view of the discharge valve V in FIG. 1. 10...Housing, 10a...Inner hole, 10b
...Mounting hole, 11...Cylinder, 12...Piston, 12a...Bottom wall, 12b...Communication hole, 12c
...Outer opening, 13...Camshaft, 14...Spring, 19...Discharge port, 22...Plug,
22a...through hole, 23...valve seat member, 24...
Valve member, 25... Spring, 26... Throttle passage, R1... Suction chamber, R2... Pressure chamber, V... Discharge valve.

Claims

[Scope of utility model registration request]

A housing having an inner hole, a plurality of cylinders radially provided through the inner hole, and a piston fitted in a reciprocating manner to form a working chamber in each cylinder; A camshaft is rotatably housed and capable of pushing each piston outward in a radial direction, and a spring biases each piston toward the camshaft, and rotation of the camshaft causes the piston to reciprocate. The radial radial is configured such that the volume of the working chamber is increased or decreased by moving, fluid is sucked into the working chamber from a suction port via a suction valve mechanism, and fluid is discharged to a discharge port via a discharge valve mechanism. A radial piston pump characterized in that a pressure chamber communicating with each of the discharge valve mechanisms and communicating with the discharge port is provided in an extra wall portion between each of the cylinders of the housing.