JPH01169681U - - Google Patents
Info
- Publication number
- JPH01169681U JPH01169681U JP6671488U JP6671488U JPH01169681U JP H01169681 U JPH01169681 U JP H01169681U JP 6671488 U JP6671488 U JP 6671488U JP 6671488 U JP6671488 U JP 6671488U JP H01169681 U JPH01169681 U JP H01169681U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- pilot
- valve
- control
- spool
- 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
- 230000007423 decrease Effects 0.000 claims 3
- 239000012530 fluid Substances 0.000 claims 1
Description
第１図は本考案に係る圧力制御弁の一実施例を
示すその断面図、第２図は従来の圧力制御弁を示
すその断面図である。
２１…圧力制御弁、２２……パイロツトスプー
ル、２３……メインスプール、２４……バルブボ
デー、２５……ソレノイド（押圧手段）、３０…
…小径部（第１の付勢手段）、３２……圧力室、
４０……フイードバツク室（第２の付勢手段）。
FIG. 1 is a sectional view showing an embodiment of the pressure control valve according to the present invention, and FIG. 2 is a sectional view showing a conventional pressure control valve. 21...Pressure control valve, 22...Pilot spool, 23...Main spool, 24...Valve body, 25...Solenoid (pressing means), 30...
... Small diameter portion (first urging means), 32 ... Pressure chamber,
40...Feedback chamber (second biasing means).
Claims (1)
に設けられ、増圧方向へ制御手段により押圧制御
されると共に、減圧方向へ第１の付勢手段により
押圧付勢され、制御手段の押圧力に応じて、パイ
ロツト圧を増減させるパイロツトスプールと、 バルブボデイのメインバルブ穴に摺動可能に設
けられ、制御液圧増圧方向へパイロツト圧により
押圧付勢され、パイロツト圧に応じて、制御圧ポ
ートの液圧を増減させるメインスプールと、を備
え、 制御手段の押圧力に比例させて、制御圧ポート
の液圧を制御するようにした圧力制御弁において
、 パイロツトバルブ穴とメインバルブ穴とを同軸
に配置するとともに、両バルブ穴の底部をパイロ
ツトバルブ穴より小径の穴で連通させ、パイロツ
トスプールの一端部に小径部を設けて上記小径穴
に嵌合させると共に、小径部内に設けた通路を介
してパイロツト圧をメインスプールに加えるよう
にしたことを特徴とする圧力制御弁。[Claims for Utility Model Registration] The pulp body is slidably provided in the pilot valve hole of the pulp body, and is pressed and controlled in the pressure increasing direction by the control means, and is pressed and biased in the pressure reducing direction by the first urging means. A pilot spool that increases or decreases pilot pressure according to the pressing force of the means, and a pilot spool that is slidably provided in the main valve hole of the valve body and is biased by the pilot pressure in the direction of increasing control fluid pressure, and increases or decreases the pilot pressure according to the pilot pressure. , a main spool that increases or decreases the hydraulic pressure in the control pressure port, and a pressure control valve that controls the hydraulic pressure in the control pressure port in proportion to the pressing force of the control means, the pilot valve hole and the main valve The valve holes are arranged coaxially with each other, and the bottoms of both valve holes are communicated with each other through a hole with a smaller diameter than the pilot valve hole.A small diameter part is provided at one end of the pilot spool to fit into the small diameter hole, and a small diameter part is provided in the small diameter part. A pressure control valve characterized in that pilot pressure is applied to a main spool through a passageway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6671488U JPH0631257Y2 (en) | 1988-05-20 | 1988-05-20 | Pressure control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6671488U JPH0631257Y2 (en) | 1988-05-20 | 1988-05-20 | Pressure control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01169681U true JPH01169681U (en) | 1989-11-30 |
| JPH0631257Y2 JPH0631257Y2 (en) | 1994-08-22 |
Family
ID=31292110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6671488U Expired - Lifetime JPH0631257Y2 (en) | 1988-05-20 | 1988-05-20 | Pressure control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0631257Y2 (en) |
-
1988
- 1988-05-20 JP JP6671488U patent/JPH0631257Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0631257Y2 (en) | 1994-08-22 |