JPH0284915U - - Google Patents
Info
- Publication number
- JPH0284915U JPH0284915U JP16232188U JP16232188U JPH0284915U JP H0284915 U JPH0284915 U JP H0284915U JP 16232188 U JP16232188 U JP 16232188U JP 16232188 U JP16232188 U JP 16232188U JP H0284915 U JPH0284915 U JP H0284915U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- port
- chamber
- valve
- primary
- 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
- 230000001105 regulatory effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 230000004043 responsiveness Effects 0.000 description 1
Landscapes
- Control Of Fluid Pressure (AREA)
Description
第1〜3図は本考案に係る液圧制御弁の一実施
例を示す図であり、第1図はその正面断面図、第
2図はそのスプールのストロークに対する各ポー
トの開口面積の変化を示す特性図、第3図はその
流量と差圧の関係を示す特性図、第4〜7図は従
来の液圧制御弁を示す図であり、第4図はその正
面断面図、第5図はその要部断面図、第6図はそ
のスプールのストロークに対する各ポートの開口
面積の変化を示すその特性図、第7図はシステム
の応答性を示すその特性図である。
21……バルブハウジング、22……バルブ室
、23……1次圧ポート、24……2次圧ポート
、25……ドレインポート、26……スプール、
27……調圧室、28……フイードバツク室、3
2……絞り部。
Figures 1 to 3 are diagrams showing an embodiment of the hydraulic control valve according to the present invention. Figure 1 is a front sectional view thereof, and Figure 2 shows changes in the opening area of each port with respect to the stroke of the spool. FIG. 3 is a characteristic diagram showing the relationship between flow rate and differential pressure, FIGS. 4 to 7 are diagrams showing a conventional hydraulic pressure control valve, FIG. 4 is a front sectional view thereof, and FIG. 6 is a sectional view of the main part thereof, FIG. 6 is a characteristic diagram showing changes in the opening area of each port with respect to the stroke of the spool, and FIG. 7 is a characteristic diagram showing the responsiveness of the system. 21... Valve housing, 22... Valve chamber, 23... Primary pressure port, 24... Secondary pressure port, 25... Drain port, 26... Spool,
27...Pressure control room, 28...Feedback room, 3
2... Aperture section.
Claims (1)
じて調圧し、2次圧として2次圧ポートから出力
する液圧制御弁であつて、前記一次圧ポートおよ
び2次圧ポートが開口したバルブ室と該バルブ室
に開口したドレインポートとが形成されたバルブ
ハウジングと、2次圧ポートに連通する調圧室お
よびフイードバツク室を画成するようバルブ室内
に摺動自在に収納され、前記指令圧を受けて調圧
室を1次圧ポートに連通させる一方、フイードバ
ツク室の圧力を受けて調圧室をドレインポートに
連通させることができるスプールと、を備えた液
圧制御弁において、前記スプールが、バルブ室内
を摺動して2次圧ポートの開度を可変とする絞り
部を有し、指令圧を受けて調圧室を1次圧ポート
に連通させるとともに該絞り部により2次圧ポー
トの開度を小さくすることを特徴とする液圧制御
弁。 A hydraulic control valve that regulates primary pressure input to a primary pressure port according to a command pressure and outputs it as secondary pressure from the secondary pressure port, the primary pressure port and the secondary pressure port being open. A valve housing is provided with a valve housing formed with a valve chamber and a drain port opening into the valve chamber, and is slidably housed in the valve chamber so as to define a pressure regulating chamber and a feedback chamber communicating with the secondary pressure port. A hydraulic control valve comprising: a spool capable of receiving pressure and communicating the pressure regulation chamber with the primary pressure port, and receiving pressure of the feedback chamber and communicating the pressure regulation chamber with the drain port; has a constriction part that slides inside the valve chamber to vary the opening degree of the secondary pressure port, and in response to command pressure, communicates the pressure regulating chamber with the primary pressure port, and also uses the constriction part to control the secondary pressure. A hydraulic control valve characterized by reducing the opening degree of a port.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16232188U JPH0284915U (en) | 1988-12-13 | 1988-12-13 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16232188U JPH0284915U (en) | 1988-12-13 | 1988-12-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0284915U true JPH0284915U (en) | 1990-07-03 |
Family
ID=31446039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16232188U Pending JPH0284915U (en) | 1988-12-13 | 1988-12-13 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0284915U (en) |
-
1988
- 1988-12-13 JP JP16232188U patent/JPH0284915U/ja active Pending