JPH0462367U

JPH0462367U -

Info

Publication number: JPH0462367U
Application number: JP10451390U
Authority: JP
Priority date: 1990-10-05
Filing date: 1990-10-05
Publication date: 1992-05-28

Description

[Brief explanation of the drawing]

第１図、第２図は本考案の実施例を示し、第１
図は弁板のポート端部正面図、第２図は弁板の切
欠溝部分斜視図、第３図はピストン式ポンプ・モ
ータの断面図、第４図・第５図は従来例の正面図
、横断面図である。１はケース、２は端板、３はハウジング、４は
シリンダーブロツク、６はシリンダー孔、７はピ
ストン、８はシリンダー室、１０はポート、１１
は弁板、１２はポート、１３は高圧ポート、１４
は低圧ポート、２１，２２は第１・第２切欠溝。 Figures 1 and 2 show embodiments of the present invention;
The figure is a front view of the port end of the valve plate, Figure 2 is a perspective view of the cutout groove part of the valve plate, Figure 3 is a sectional view of the piston type pump/motor, and Figures 4 and 5 are front views of the conventional example. , a cross-sectional view. 1 is a case, 2 is an end plate, 3 is a housing, 4 is a cylinder block, 6 is a cylinder hole, 7 is a piston, 8 is a cylinder chamber, 10 is a port, 11
is a valve plate, 12 is a port, 13 is a high pressure port, 14
is a low pressure port, and 21 and 22 are first and second notched grooves.

Claims

[Claims for Utility Model Registration] A cylinder block 4 is rotatably provided in a housing 3 consisting of a case 1 and an end plate 2, and a piston 7 is inserted into a cylinder hole 6 of the cylinder block 4 to form a cylinder chamber 8. This cylinder chamber 8 is connected to port 10 and port 12 of valve plate 11.
In the piston type pump/motor, the valve plate 11 has first and second notched grooves 20, which are continuous with the port 12, in the piston type pump motor which communicates alternately with the high pressure port 13 and the low pressure port 14 formed in the end plate 2 through the valve plate 11. 21, its first and second notch grooves 2
0 and 21 open to a port 10 at the same time, and center lines B and C intersect within the port 10.