JPH0466367U - - Google Patents
Info
- Publication number
- JPH0466367U JPH0466367U JP10800290U JP10800290U JPH0466367U JP H0466367 U JPH0466367 U JP H0466367U JP 10800290 U JP10800290 U JP 10800290U JP 10800290 U JP10800290 U JP 10800290U JP H0466367 U JPH0466367 U JP H0466367U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- radius
- rocker cam
- arcuate
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
Description
図面は本考案の実施例を示し、第1図は可変式
ポンプ・モータの全体断面図、第2図はロツカー
カム支持部の分解斜視図、第3図は円弧状突起と
円弧状凹溝の形状説明図である。
1はケース、1aは底壁、4はシリンダーブロ
ツク、6は軸、11はシリンダー孔、12はピス
トン、13はシリンダー室、15は弁板、16は
ピストンシユー、17はシユーリテーナ、18は
ロツカーカム、31は前面、32は後面、33,
34は第1・第2ストツパ面、35は円弧状突起
、36は円弧状凹溝、36aは底部、36bは口
元部。
The drawings show an embodiment of the present invention; Fig. 1 is an overall sectional view of a variable pump/motor, Fig. 2 is an exploded perspective view of a rocker cam support, and Fig. 3 is a diagram showing the shapes of an arcuate protrusion and an arcuate groove. It is an explanatory diagram. 1 is a case, 1a is a bottom wall, 4 is a cylinder block, 6 is a shaft, 11 is a cylinder hole, 12 is a piston, 13 is a cylinder chamber, 15 is a valve plate, 16 is a piston shoe, 17 is a shoe retainer, 18 is a rocker cam, 31 is the front, 32 is the rear, 33,
34 is a first and second stopper surface, 35 is an arcuate projection, 36 is an arcuate groove, 36a is a bottom portion, and 36b is a mouth portion.
Claims (1)
もに回転自在に支承し、そのシリンダーブロツク
4のシリンダー孔11内にピストン12を嵌挿し
てシリンダー室13を構成し、そのシリンダー室
13を弁板15の高圧ポートと低圧ポートに順次
連通し、前記ピストン12に連結したピストンシ
ユー16をロツカーカム18の前面に沿つて摺動
自在にシユーリテーナ17で押し付けた可変式ポ
ンプ・モータにおいて、 前記ロツカーカム18の後面32に角度の異な
る複数のストツパ面と円弧状突起35を設け、前
記ケース1の底壁1aに円弧状凹溝36を形成し
てその底壁1aをストツパーとし、前記円弧状凹
溝36を半径R1の底部36aと半径R3の口元
部36bとで2段形状とし、かつその半径R1と
R3と円弧状突起35の半径R2との関係をR1
<R2<R3としたことを特徴とした可変式ポン
プ・モータのロツカーカム支持構造。[Claims for Utility Model Registration] A cylinder block 4 is rotatably supported together with a shaft 6 in a case 1, and a piston 12 is fitted into a cylinder hole 11 of the cylinder block 4 to form a cylinder chamber 13. In the variable pump motor, the chamber 13 is sequentially communicated with the high pressure port and the low pressure port of the valve plate 15, and the piston shoe 16 connected to the piston 12 is slidably pressed by the shoe retainer 17 along the front surface of the rocker cam 18. A plurality of stopper surfaces and arcuate protrusions 35 having different angles are provided on the rear surface 32 of the rocker cam 18, an arcuate groove 36 is formed in the bottom wall 1a of the case 1, and the bottom wall 1a is used as a stopper. The groove 36 has a two-step shape with a bottom portion 36a having a radius R1 and a mouth portion 36b having a radius R3 , and the relationship between the radii R1 and R3 and the radius R2 of the arcuate protrusion 35 is R1 .
A rocker cam support structure for a variable pump/motor characterized by <R 2 < R 3 .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10800290U JPH0466367U (en) | 1990-10-17 | 1990-10-17 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10800290U JPH0466367U (en) | 1990-10-17 | 1990-10-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0466367U true JPH0466367U (en) | 1992-06-11 |
Family
ID=31854763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10800290U Pending JPH0466367U (en) | 1990-10-17 | 1990-10-17 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0466367U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001132619A (en) * | 1999-11-09 | 2001-05-18 | Kanzaki Kokyukoki Mfg Co Ltd | Variable displacement type axial piston pump and variable displacement type axial piston motor |
JP2018112076A (en) * | 2017-01-07 | 2018-07-19 | 日立建機株式会社 | Variable displacement swash plate type hydraulic rotary machine |
-
1990
- 1990-10-17 JP JP10800290U patent/JPH0466367U/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001132619A (en) * | 1999-11-09 | 2001-05-18 | Kanzaki Kokyukoki Mfg Co Ltd | Variable displacement type axial piston pump and variable displacement type axial piston motor |
JP2018112076A (en) * | 2017-01-07 | 2018-07-19 | 日立建機株式会社 | Variable displacement swash plate type hydraulic rotary machine |