JPH0269180U - - Google Patents
Info
- Publication number
- JPH0269180U JPH0269180U JP14897288U JP14897288U JPH0269180U JP H0269180 U JPH0269180 U JP H0269180U JP 14897288 U JP14897288 U JP 14897288U JP 14897288 U JP14897288 U JP 14897288U JP H0269180 U JPH0269180 U JP H0269180U
- Authority
- JP
- Japan
- Prior art keywords
- spool
- hole
- oil hole
- valve
- switching valve
- 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
- 230000004323 axial length Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
Landscapes
- Multiple-Way Valves (AREA)
Description
第１図は本考案の一実施例を示す縦断面図、第
２図は第１図の切換弁の作動要領を示す説明図、
第３図は第１図の変形例を示す同じく縦断面図で
ある。第４図は公知の舶用油圧舵取装置を示す全
体系統図、第５図は第４図のパイロツト油圧自動
切換弁を示す縦断面図で、同図Ａはスプールが一
端寄りにシフトした場合、同図Ｂはスプールが中
立位置にシフトした場合をそれぞれ示す。
１……スプール、２……軸方向油孔、３……半
径方向油孔、４……油溝、９……ソレノイド弁、
１３……オートアイソレーシヨンバルブ、Ａ，Ｂ
……入力ポート、Ｃ……出力ポート、Ｌ……スプ
ール孔の全長、ｌ……スプールの全長、ｌ′……
スプールの一端と半径方向油孔との距離。
FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the operating procedure of the switching valve shown in FIG. 1,
FIG. 3 is a longitudinal sectional view showing a modification of FIG. 1. FIG. 4 is an overall system diagram showing a known marine hydraulic steering system, and FIG. 5 is a vertical cross-sectional view showing the pilot hydraulic automatic switching valve of FIG. 4. FIG. Figure B shows the case where the spool is shifted to the neutral position. 1... Spool, 2... Axial oil hole, 3... Radial oil hole, 4... Oil groove, 9... Solenoid valve,
13...Auto isolation valve, A, B
...Input port, C...Output port, L...Total length of spool hole, l...Total length of spool, l'...
Distance between one end of the spool and the radial oil hole.
Claims (1)
内挿し、上記スプール孔の両端ポートにそれぞれ
導入される油圧の大小関係で、一方の油圧を上記
スプール孔の中央ポートより取出すようにしたフ
リーピストン型油圧自動切換弁において、上記ス
プールの一端に開口し他端が上記スプールの軸方
向長さの約１／２まで延びる軸方向油孔と、上記
軸方向油孔の他端を通つて半径方向に貫通する半
径方向油孔とを具えるとともに、上記半径方向油
孔の開口端とスプール端との距離を上記中央ポー
トの油溝の巾以下としたことを特徴とするフリー
ピストン型油圧自動切換弁。 A free piston type in which a spool is slidably inserted into the spool hole of the valve body, and one hydraulic pressure is taken out from the center port of the spool hole depending on the magnitude of the hydraulic pressure introduced to both end ports of the spool hole. In the hydraulic automatic switching valve, an axial oil hole opens at one end of the spool and the other end extends to approximately 1/2 of the axial length of the spool; A free piston type hydraulic automatic switching valve, characterized in that the valve has a radial oil hole passing through it, and the distance between the opening end of the radial oil hole and the spool end is equal to or less than the width of the oil groove of the central port. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14897288U JPH0269180U (en) | 1988-11-15 | 1988-11-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14897288U JPH0269180U (en) | 1988-11-15 | 1988-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0269180U true JPH0269180U (en) | 1990-05-25 |
Family
ID=31420771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14897288U Pending JPH0269180U (en) | 1988-11-15 | 1988-11-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0269180U (en) |
-
1988
- 1988-11-15 JP JP14897288U patent/JPH0269180U/ja active Pending
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