JPH03108874U

JPH03108874U -

Info

Publication number: JPH03108874U
Application number: JP1704190U
Authority: JP
Priority date: 1990-02-22
Filing date: 1990-02-22
Publication date: 1991-11-08

Description

[Brief explanation of drawings]

第１図は本考案斜板式アキシヤルピストンポン
プ、モーターの第１実施例を示し、同図ａは部分
側面図、同図ｂは部分縦断面図、第２図は第２実
施例のシリンダーの部分縦断面図、第３図は第３
実施例のシリンダーの部分縦断面図である。第４
図は公知の斜板式アキシヤルピストンポンプ、モ
ーターの縦断面図、第５図は同上におけるピスト
ンの作用力を示し、同図ａは部分側面図、同図ｂ
は部分縦断面図、第６図はピストンの作用力の線
図である。１……シリンダーブロツク、２……シリンダー
、３……ピストン、４……シリンダーブロツク端
面、５……分配弁、６……スプライン、７……軸
、８……シユー、９……斜板、１０……シリンダ
ーポート、１１……ポケツト、１２……流体路、
１２ａ……流体溝、１２ｂ……流体溝、１３……
開口部、１４……滑合面。 Fig. 1 shows the first embodiment of the swash plate type axial piston pump and motor of the present invention, Fig. 1a is a partial side view, Fig. 2b is a partial vertical sectional view, and Fig. 2 is a cylinder of the second embodiment. Partial longitudinal sectional view, Fig. 3
FIG. 3 is a partial longitudinal sectional view of the cylinder of the embodiment. Fourth
The figure is a vertical sectional view of a known swash plate type axial piston pump and motor, Figure 5 shows the acting force of the piston in the same as above, figure a is a partial side view, figure b
is a partial vertical sectional view, and FIG. 6 is a diagram of the acting force on the piston. 1... Cylinder block, 2... Cylinder, 3... Piston, 4... End face of cylinder block, 5... Distribution valve, 6... Spline, 7... Shaft, 8... Shu, 9... Swash plate, 10... Cylinder port, 11... Pocket, 12... Fluid path,
12a...Fluid groove, 12b...Fluid groove, 13...
Opening, 14...Sliding surface.

Claims

[Scope of utility model registration request]

A swash plate type axial piston pump has a pocket on the inner surface of the cylinder near the piston head, where the sliding conditions between the motor piston and the cylinder deteriorate, to guide the high-pressure working fluid in the cylinder, and to prevent the high-pressure working fluid from flowing into the pocket. A swash plate type axial piston pump and motor characterized in that a supply fluid path is opened and closed by the movement of a piston.