JPS63125266U - - Google Patents
Info
- Publication number
- JPS63125266U JPS63125266U JP1689987U JP1689987U JPS63125266U JP S63125266 U JPS63125266 U JP S63125266U JP 1689987 U JP1689987 U JP 1689987U JP 1689987 U JP1689987 U JP 1689987U JP S63125266 U JPS63125266 U JP S63125266U
- Authority
- JP
- Japan
- Prior art keywords
- port
- hydraulic pressure
- input
- spool
- output
- 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 description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Safety Valves (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Description
第１図は本考案にかかる調圧弁の第１実施例の
調圧時の断面図、第２図はその切換時の断面図、
第３図は第１図の一部拡大図、第４図はデユーテ
イ比と第１出力油圧との関係図、第５図は第１出
力油圧の時間変化を示す図、第６図はデユーテイ
比と第２出力油圧との関係図、第７図は本考案の
第２実施例の一部拡大図、第８図は本考案の第３
実施例の調圧時の断面図である。
１，４……バルブボデー、２，５……スプール
、１１，４１……信号油圧ポート、１５，４４…
…ドレンポート、１６，４３……出力油圧ポート
、１７，４２……入力油圧ポート、１９，４５…
…出力油圧帰還ポート。
FIG. 1 is a cross-sectional view of the first embodiment of the pressure regulating valve according to the present invention during pressure regulation, and FIG. 2 is a cross-sectional view during switching.
Fig. 3 is a partially enlarged view of Fig. 1, Fig. 4 is a diagram showing the relationship between the duty ratio and the first output oil pressure, Fig. 5 is a diagram showing the change in the first output oil pressure over time, and Fig. 6 is the duty ratio. FIG. 7 is a partially enlarged view of the second embodiment of the present invention, and FIG. 8 is a diagram of the third embodiment of the present invention.
It is a sectional view at the time of pressure regulation of an example. 1, 4... Valve body, 2, 5... Spool, 11, 41... Signal hydraulic port, 15, 44...
...Drain port, 16,43...Output hydraulic port, 17,42...Input hydraulic port, 19,45...
…Output hydraulic return port.
Claims (1)
ポートとドレンポートとの中間に形成された出力
油圧ポートと、スプールを一方向に押す信号油圧
が入力される信号油圧ポートと、信号油圧と対向
する方向へスプールを押すべく出力油圧が帰還さ
れる出力油圧帰還ポートとを有し、出力油圧ポー
トが入力油圧ポートまたはドレンポートと選択的
に連通するようにした調圧弁において、入力油圧
ポートまたは出力油圧ポートを開閉するスプール
のランド部近傍に、該ランド部より僅かに小径な
段部またはテーパ部を形成したことを特徴とする
調圧弁。 An input hydraulic port, a drain port, an output hydraulic port formed between the input hydraulic port and the drain port, a signal hydraulic port into which a signal hydraulic pressure that pushes the spool in one direction is input, and a direction opposite to the signal hydraulic pressure. an output hydraulic pressure return port to which the output hydraulic pressure is returned to push the spool, and the output hydraulic pressure port selectively communicates with the input hydraulic pressure port or the drain port, the input hydraulic pressure port or the output hydraulic pressure port; 1. A pressure regulating valve characterized in that a step or taper portion having a diameter slightly smaller than the land portion is formed near the land portion of the spool that opens and closes the spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1689987U JPS63125266U (en) | 1987-02-07 | 1987-02-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1689987U JPS63125266U (en) | 1987-02-07 | 1987-02-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63125266U true JPS63125266U (en) | 1988-08-16 |
Family
ID=30809174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1689987U Pending JPS63125266U (en) | 1987-02-07 | 1987-02-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63125266U (en) |
-
1987
- 1987-02-07 JP JP1689987U patent/JPS63125266U/ja active Pending