JPS5812682U

JPS5812682U - Hydraulic pump/motor valve plate

Info

Publication number: JPS5812682U
Application number: JP10534481U
Authority: JP
Inventors: 哲夫川崎
Original assignee: 三菱重工業株式会社
Priority date: 1981-07-17
Filing date: 1981-07-17
Publication date: 1983-01-26

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は液圧ポンプ・モータの従来例の縦断面図、第２
図は同じく他の従来例の縦断面図、第３Ａ図は第１図、
第２図の弁板の拡大正面図、第３Ｂ図は第３Ａ図のＡ−
Ａ線断面図、第４Ａ図は本案の弁板の一実施例を示す正
面図、第４Ｂ図は第４Ａ図のＢ−Ｂ線断面図である。イ：吸入ポート、ロ：吐出ポート、ｃ、　ｃ’　　：シ
ール面、Ｅ、　Ｆ：油溜凹部、５ニジリンダブロツク、
５２：フローティングプレート、２６．２６′　二弁板
、２７：ケースドレン。Figure 1 is a vertical cross-sectional view of a conventional example of a hydraulic pump/motor;
The figure is also a vertical cross-sectional view of another conventional example, Figure 3A is Figure 1,
Figure 2 is an enlarged front view of the valve plate, Figure 3B is A- in Figure 3A.
FIG. 4A is a front view showing an embodiment of the valve plate of the present invention, and FIG. 4B is a sectional view taken along line B--B of FIG. 4A. A: Suction port, B: Discharge port, c, c': Seal surface, E, F: Oil sump recess, 5 cylinder cylinder block,
52: Floating plate, 26.26' double valve plate, 27: Case drain.

Claims

[Scope of utility model registration request]

In a hydraulic pump/motor equipped with a valve plate having a suction port and a discharge port, the sealing surface of which comes into contact with the end face of a cylinder block or the end face of a floating plate attached to the cylinder block, radially on both sides of the suction port. A hydraulic system characterized by a configuration in which an oil sump recess is provided on a seal surface provided in the seal surface so as not to cross the seal surface in the radial direction, and the oil sump recess is communicated with a case drain, suction port, or discharge port. Pump motor valve plate.