JPS63134178U

JPS63134178U -

Info

Publication number: JPS63134178U
Application number: JP2656287U
Authority: JP
Priority date: 1987-02-25
Filing date: 1987-02-25
Publication date: 1988-09-02

Description

[Brief explanation of drawings]

第１図と第２図は第１実施例を示し、第１図は
第５図Ｂ―Ｂ線断面に相当するピストンシユーの
平面図であり、第２図は第１図のＣ―Ｃ線断面図
である。第３図は第２実施例を示すピストンシユ
ーの半部平面図である。第４図は第３実施例を示
すピストンシユーの半部平面図である。第５図は
ピストンポンプ／モータの従来構造を示す断面図
である。第６図は第５図の要部分解斜視図、第７
図は同Ａ―Ａ線半部断面図である。１……ケーシング、２……回転軸、３……トル
クプレート、４……シリンダブロツク、６……ピ
ストン、９ａ，９ｂ……圧力ポケツト、１０……
静圧ベアリング、１１……受圧面、１４……ピス
トンシユー、１５……受圧プレート、１８……連
結片、１９，１９ａ，１９ｂ……連結片、２０…
…スペーサ。 1 and 2 show the first embodiment, FIG. 1 is a plan view of the piston shoe corresponding to the cross section taken along line B--B in FIG. 5, and FIG. 2 is a cross-sectional view taken along line C--C in FIG. It is a diagram. FIG. 3 is a half plan view of a piston shoe showing a second embodiment. FIG. 4 is a half plan view of a piston shoe showing a third embodiment. FIG. 5 is a sectional view showing the conventional structure of a piston pump/motor. Figure 6 is an exploded perspective view of the main part of Figure 5;
The figure is a half sectional view taken along the line AA. DESCRIPTION OF SYMBOLS 1... Casing, 2... Rotating shaft, 3... Torque plate, 4... Cylinder block, 6... Piston, 9a, 9b... Pressure pocket, 10...
Hydrostatic bearing, 11...Pressure receiving surface, 14...Piston shoe, 15...Pressure receiving plate, 18...Connecting piece, 19, 19a, 19b...Connecting piece, 20...
…Spacer.

Claims

[Scope of utility model registration request]

A piston pump in which the torque plate is supported by the casing via a hydrostatic bearing.
In the motor, a plurality of pistons protruding from a cylinder block are connected to the torque plate, and a piston shoe is tiltably attached to the side opposite to the cylinder block at the connecting position of each piston via an O-ring and a back-up spring. A piston pump or motor, characterized in that the static pressure bearing is formed between the piston shoes and a pressure receiving surface on the casing side, and the piston shoes adjacent in the circumferential direction are engaged with each other so as not to rotate. .