JPH0337510U - - Google Patents
Info
- Publication number
- JPH0337510U JPH0337510U JP9953689U JP9953689U JPH0337510U JP H0337510 U JPH0337510 U JP H0337510U JP 9953689 U JP9953689 U JP 9953689U JP 9953689 U JP9953689 U JP 9953689U JP H0337510 U JPH0337510 U JP H0337510U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- spool
- control valve
- port
- pilot
- 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 1
Landscapes
- Control Of Fluid Pressure (AREA)
- Safety Valves (AREA)
- Control Of Transmission Device (AREA)
Description
第１図はこの考案の一実施例を示す断面図、第
２図はその一方のランド部の斜視図、第３図はス
プールが途中まで移動した状態の断面図、第４図
は従来の圧力制御バルブの一例を示す断面図、第
５図はこの考案の圧力制御バルブによる二次圧の
変化を従来の圧力制御バルブによる二次圧の変化
と併せて示す線図である。
２２…スプール、２３，２４…ランド部、２５
…スプリング、２７…ポート、２８…入力ポート
、２９…出力ポート、３０…ドレンポート、３２
，３３…溝、３４…穴、３６…小孔、３７…油路
。
Fig. 1 is a sectional view showing an embodiment of this invention, Fig. 2 is a perspective view of one of the lands, Fig. 3 is a sectional view of the spool moved halfway, and Fig. 4 is a conventional pressure FIG. 5 is a sectional view showing an example of a control valve, and is a diagram showing changes in secondary pressure due to the pressure control valve of this invention together with changes in secondary pressure due to a conventional pressure control valve. 22... Spool, 23, 24... Land part, 25
...Spring, 27...Port, 28...Input port, 29...Output port, 30...Drain port, 32
, 33... Groove, 34... Hole, 36... Small hole, 37... Oil passage.
Claims (1)
るスプールを備え、供給された一次圧を調圧して
なる二次圧をパイロツト圧部にフイードバツクし
て印加し、そのパイロツト圧部のフエースにかか
る圧力を該圧力に対抗するようスプールに印加し
た荷重に釣り合わせることにより調圧するよう構
成した圧力制御バルブにおいて、 前記二次圧をフイードバツクして加えるポート
が前記スプールの外周側に開口するよう設けられ
るとともに、スプールにはその全往復動範囲内で
前記ポートの開口部に摺接する長さ以上の調圧用
ランド部が形成され、その調圧用ランド部に前記
ポートと前記パイロツト圧部とを連通させかつス
プールの位置によつて流路断面積が異なる連通路
が形成されていることを特徴とする圧力制御バル
ブ。[Claims for Utility Model Registration] A spool having a plurality of land parts and reciprocating in the axial direction is provided, and a secondary pressure obtained by regulating the supplied primary pressure is applied to the pilot pressure part by feedback, In the pressure control valve configured to regulate the pressure applied to the face of the pilot pressure section by balancing the pressure applied to the spool to counteract the pressure, a port for feeding back and applying the secondary pressure is provided on the spool. The spool is provided with an opening on the outer circumferential side, and the spool is formed with a pressure regulating land portion having a length longer than that which makes sliding contact with the opening of the port within the entire reciprocating range of the spool. A pressure control valve characterized in that a communication passage is formed that communicates with a pilot pressure section and has a flow passage cross-sectional area that varies depending on the position of the spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9953689U JPH0337510U (en) | 1989-08-25 | 1989-08-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9953689U JPH0337510U (en) | 1989-08-25 | 1989-08-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0337510U true JPH0337510U (en) | 1991-04-11 |
Family
ID=31648579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9953689U Pending JPH0337510U (en) | 1989-08-25 | 1989-08-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0337510U (en) |
-
1989
- 1989-08-25 JP JP9953689U patent/JPH0337510U/ja active Pending