JPH022576U - - Google Patents
Info
- Publication number
- JPH022576U JPH022576U JP8019688U JP8019688U JPH022576U JP H022576 U JPH022576 U JP H022576U JP 8019688 U JP8019688 U JP 8019688U JP 8019688 U JP8019688 U JP 8019688U JP H022576 U JPH022576 U JP H022576U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- piston
- control
- pressure
- balance piston
- 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
- Fluid-Driven Valves (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Description
第１図は一実施例を油圧回路と共に示す縦断面
図、第２図は同実施例の一部分を低油圧制御時の
一状態で示す縦断面図、第３図は同実施例を含む
油圧回路全体の回路図である。
１……バランスピストン、２……ソレノイド、
３……パイロツトバルブ、４……弁ばね、５……
制御ピストン、６……背圧室、８……逆止弁、９
……他のソレノイド、９ａ……プツシユピン、１
０……室、１１，１２……バルブケース、１３…
…ポンプポート、１４……クラツチポート、１５
……タンクポート、１６……油圧室、２１，２２
，２３……油通路。
Fig. 1 is a longitudinal sectional view showing an embodiment together with a hydraulic circuit, Fig. 2 is a longitudinal sectional view showing a part of the embodiment in one state during low oil pressure control, and Fig. 3 is a hydraulic circuit including the embodiment. It is an overall circuit diagram. 1...Balance piston, 2...Solenoid,
3... Pilot valve, 4... Valve spring, 5...
Control piston, 6... Back pressure chamber, 8... Check valve, 9
...Other solenoids, 9a... Push pin, 1
0... Chamber, 11, 12... Valve case, 13...
...Pump port, 14...Clutch port, 15
... Tank port, 16 ... Hydraulic chamber, 21, 22
, 23...Oil passage.
Claims (1)
イロツトバルブ３を備えるバランスピストン型の
電磁比例圧力制御弁において、先端でバランスピ
ストン１を移動附勢する弁ばね４の基端を受ける
制御ピストン５を設けて、パイロツトバルブ３の
一次側と連通する背圧室６をこの制御ピストン５
の背後に形成すると共に、該制御ピストン５の受
圧面積Ｓ１をバランスピストン１の受圧面積Ｓ２
よりも小さく設定する一方、パイロツトバルブ３
の二次側をタンクポート１５に連通させる油通路
中に、タンクポート方向への油流通を阻止する逆
止弁８であつて他のソレノイド９の励磁により開
放される逆止弁８を挿入設置し、バランスピスト
ン１と上記制御ピストン５間でバルブケース内に
形成される室１０を、上記逆止弁８の一次側に連
通させたことを特徴とする電磁比例圧力制御弁。 In a balance piston type electromagnetic proportional pressure control valve equipped with a pilot valve 3 that changes and controls the set oil pressure by a solenoid 2, a control piston 5 is provided that receives a base end of a valve spring 4 that moves and biases the balance piston 1 at its tip, This control piston 5 connects a back pressure chamber 6 communicating with the primary side of the pilot valve 3.
The pressure receiving area S1 of the control piston 5 is formed behind the balance piston 1, and the pressure receiving area S1 of the control piston 5 is the pressure receiving area S2 of the balance piston 1.
While setting the pilot valve 3 smaller than
A check valve 8 that prevents oil flow toward the tank port and is opened by energizing another solenoid 9 is inserted and installed in the oil passage that communicates the secondary side of the tank port 15 with the tank port 15. An electromagnetic proportional pressure control valve characterized in that a chamber 10 formed in the valve case between the balance piston 1 and the control piston 5 is communicated with the primary side of the check valve 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8019688U JPH0637248Y2 (en) | 1988-06-17 | 1988-06-17 | Solenoid proportional pressure control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8019688U JPH0637248Y2 (en) | 1988-06-17 | 1988-06-17 | Solenoid proportional pressure control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH022576U true JPH022576U (en) | 1990-01-09 |
| JPH0637248Y2 JPH0637248Y2 (en) | 1994-09-28 |
Family
ID=31305030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8019688U Expired - Lifetime JPH0637248Y2 (en) | 1988-06-17 | 1988-06-17 | Solenoid proportional pressure control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0637248Y2 (en) |
-
1988
- 1988-06-17 JP JP8019688U patent/JPH0637248Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0637248Y2 (en) | 1994-09-28 |
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