JPS643102U - - Google Patents
Info
- Publication number
- JPS643102U JPS643102U JP9775487U JP9775487U JPS643102U JP S643102 U JPS643102 U JP S643102U JP 9775487 U JP9775487 U JP 9775487U JP 9775487 U JP9775487 U JP 9775487U JP S643102 U JPS643102 U JP S643102U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic pressure
- pressure port
- pressure
- control pressure
- control
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Servomotors (AREA)
- Magnetically Actuated Valves (AREA)
Description
第１図は本考案一実施例の圧力制御弁示す断面
図、第２図は実施例制御弁の作動を示す断面図、
第３図は実施例制御弁を適用した装置のシステム
を示す全体図、第４図は従来のストローク量変化
に対する制御液圧変化を示すグラフである。
Ａ…圧力制御弁、１０…バルブボデイ、２０…
バルブスプール、２３…第１ランド、２４…第２
ランド、３０…第１ソレノイド、４０…第２ソレ
ノイド、６１…バルブ穴、６２…液圧導入穴、６
３…第１ドレン穴、６４…第２ドレン穴、６５…
第１制御圧ポート、６６…第２制御圧ポート、７
０…第１ピストン室、７１…第１パイロツトピス
トン、７２…第１フイードバツク液圧路、７３…
ピストン室フイルタ、８０…第２ピストン室、８
１…第２パイロツトピストン、８２…第２フイー
ドバツク液圧路、８３…ピストン室フイルタ。
FIG. 1 is a sectional view showing a pressure control valve according to an embodiment of the present invention, and FIG. 2 is a sectional view showing the operation of the embodiment control valve.
FIG. 3 is an overall diagram showing a system of an apparatus to which the embodiment control valve is applied, and FIG. 4 is a graph showing changes in control hydraulic pressure with respect to changes in conventional stroke amount. A...Pressure control valve, 10...Valve body, 20...
Valve spool, 23...first land, 24...second
Land, 30...first solenoid, 40...second solenoid, 61...valve hole, 62...hydraulic pressure introduction hole, 6
3...First drain hole, 64...Second drain hole, 65...
First control pressure port, 66...Second control pressure port, 7
0...first piston chamber, 71...first pilot piston, 72...first feedback hydraulic pressure path, 73...
Piston chamber filter, 80...Second piston chamber, 8
DESCRIPTION OF SYMBOLS 1...Second pilot piston, 82...Second feedback hydraulic pressure path, 83...Piston chamber filter.
Claims (1)
入穴及びドレン穴が形成されたバルブ穴を備えた
バルブボデイと、 前記バルブ穴に摺動可能に設けられ、前記液圧
導入穴に導かれた液圧を第１制御圧ポートと第２
制御圧ポートとに逆比例的に切り換えるランドが
形成されたバルブスプールと、 前記バルブスプールの両端側のバルブボデイに
それぞれ設けられ、電磁力に応じてプランジヤで
押圧し前記バルブスプールを第１制御圧ポート増
圧方向へ摺動させる第１ソレノイド及び、第２制
御圧ポート増圧方向へ摺動させる第２ソレノイド
と、 前記バルブスプールの一端部に形成され、前記
第２ソレノイドのプランジヤに当接状態で設けた
第１パイロツトピストンが摺動可能に挿入された
第１ピストン室及び、前記バルブスプールの他端
部に形成され、前記第１ソレノイドのプランジヤ
に当接状態で設けた第２パイロツトピストンが摺
動可能に挿入された第２ピストン室と、 前記第１ピストン室に第１制御圧ポートの液圧
を導入可能に形成された第１フイードバツク液圧
路及び、前記第２ピストン室に第２制御圧ポート
の液圧を導入可能に形成された第２フイードバツ
ク液圧路と、 両フイードバツク液圧路に設けられた緻密なフ
イルタと、 を備えていることを特徴とする圧力制御弁。[Claims for Utility Model Registration] A valve body having a valve hole in which a first control pressure port, a second control pressure port, a hydraulic pressure introduction hole, and a drain hole are formed; The hydraulic pressure introduced into the hydraulic pressure introduction hole is transferred to the first control pressure port and the second control pressure port.
a valve spool in which a land is formed to switch inversely proportionally to a control pressure port; and a valve body provided on each end side of the valve spool, and pressed by a plunger according to electromagnetic force to switch the valve spool to the first control pressure port. a first solenoid that slides in the pressure increasing direction; a second solenoid that slides in the pressure increasing direction of the second control pressure port; A first piston chamber into which a first pilot piston provided is slidably inserted, and a second pilot piston formed at the other end of the valve spool and provided in contact with the plunger of the first solenoid are slidably inserted. a second piston chamber movably inserted therein; a first feedback hydraulic pressure path formed to be able to introduce hydraulic pressure from a first control pressure port into the first piston chamber; and a second control pressure passage into the second piston chamber. A pressure control valve comprising: a second feedback hydraulic pressure path formed to be able to introduce hydraulic pressure of a pressure port; and a dense filter provided in both feedback hydraulic pressure paths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9775487U JPH0426723Y2 (en) | 1987-06-24 | 1987-06-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9775487U JPH0426723Y2 (en) | 1987-06-24 | 1987-06-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS643102U true JPS643102U (en) | 1989-01-10 |
| JPH0426723Y2 JPH0426723Y2 (en) | 1992-06-26 |
Family
ID=31323434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9775487U Expired JPH0426723Y2 (en) | 1987-06-24 | 1987-06-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0426723Y2 (en) |
-
1987
- 1987-06-24 JP JP9775487U patent/JPH0426723Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0426723Y2 (en) | 1992-06-26 |
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