JPH0175668U - - Google Patents
Info
- Publication number
- JPH0175668U JPH0175668U JP1987170481U JP17048187U JPH0175668U JP H0175668 U JPH0175668 U JP H0175668U JP 1987170481 U JP1987170481 U JP 1987170481U JP 17048187 U JP17048187 U JP 17048187U JP H0175668 U JPH0175668 U JP H0175668U
- Authority
- JP
- Japan
- Prior art keywords
- flow path
- side flow
- spool
- actuator
- actuator side
- 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
Landscapes
- Multiple-Way Valves (AREA)
Description
第１図及び第２図は本考案の一実施例を示す方
向制御弁の概略を示す縦断面図である。
１：ケーシング、２：スプール、３：油圧ポン
プ、４：下流側制御弁、５：アクチユエータ、６
，７：油圧源側流路、８，９：アクチユエータ側
流路、１０，１１：オリフイス、１２，１３：油
路、１４：低圧側流路、１４ａ，１４ｂ：分岐流
路、１４ｃ：本流路。
FIGS. 1 and 2 are vertical sectional views schematically showing a directional control valve according to an embodiment of the present invention. 1: Casing, 2: Spool, 3: Hydraulic pump, 4: Downstream control valve, 5: Actuator, 6
, 7: Hydraulic source side flow path, 8, 9: Actuator side flow path, 10, 11: Orifice, 12, 13: Oil path, 14: Low pressure side flow path, 14a, 14b: Branch flow path, 14c: Main flow path .
Claims (1)
アクチユエータに連通するアクチユエータ側流路
を備え、前記スプールの移動によつて前記一次側
流路とアクチユエータ側流路とを遮断する方向制
御弁において、前記スプールの移動空間に連通す
る３本の流路を持つて外部に開放する低圧側流路
を形成し、前記一次側流路からアクチユエータ側
流路とを遮断するようにスプールが位置するとき
、前記低圧側流路を前記アクチユエータ側流路に
連通可能とし、更に一次側流路とアクチユエータ
側流路とが連通するようにスプールが位置すると
き、低圧側流路を前記スプールによつて閉塞可能
としたことを特徴とする方向制御弁。 A directional control valve that includes a built-in spool and has an actuator side flow path communicating with a hydraulic power source side primary side flow path and an actuator side flow path, and shuts off the primary side flow path and the actuator side flow path by movement of the spool. , when the spool is positioned so as to form a low-pressure side flow path that is open to the outside and has three flow paths communicating with the movement space of the spool, and to cut off the actuator side flow path from the primary side flow path. , when the spool is positioned so that the low pressure side flow path can communicate with the actuator side flow path, and the primary side flow path and the actuator side flow path are in communication, the low pressure side flow path is blocked by the spool. A directional control valve characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987170481U JPH0175668U (en) | 1987-11-06 | 1987-11-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987170481U JPH0175668U (en) | 1987-11-06 | 1987-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0175668U true JPH0175668U (en) | 1989-05-23 |
Family
ID=31461467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987170481U Pending JPH0175668U (en) | 1987-11-06 | 1987-11-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0175668U (en) |
-
1987
- 1987-11-06 JP JP1987170481U patent/JPH0175668U/ja active Pending