JPS56167969A - Fluid power reducing structure of spool valve - Google Patents
Fluid power reducing structure of spool valveInfo
- Publication number
- JPS56167969A JPS56167969A JP6972580A JP6972580A JPS56167969A JP S56167969 A JPS56167969 A JP S56167969A JP 6972580 A JP6972580 A JP 6972580A JP 6972580 A JP6972580 A JP 6972580A JP S56167969 A JPS56167969 A JP S56167969A
- Authority
- JP
- Japan
- Prior art keywords
- spool
- fluid power
- shaft
- spool valve
- notched part
- 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
Landscapes
- Multiple-Way Valves (AREA)
Abstract
PURPOSE: To reduce the fluid power which operates in the spool closing direction by forming a plurality of auxiliary passages which flow oil into a spool passage, at equal intervals in the circumferential direction of a spool, except on the sectional surface of the shaft during the time from opening to closing the spool valve.
CONSTITUTION: From the end surface 3 of the rand 2 of a spool 1, a notched part C is formed by forming cut parts in parallel, having the shaft line interposed, across the end surface 3. As the notched part C is formed except on the sectional surface of the shaft, the notched part C does not intersect with the nose part 8, and is deeply concaved for the opening on the rand peripheral surface side. Therefore, the effluence angle θ of the liquid for the spool shaft line can be increased, and the fluid power can be reduced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6972580A JPS56167969A (en) | 1980-05-26 | 1980-05-26 | Fluid power reducing structure of spool valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6972580A JPS56167969A (en) | 1980-05-26 | 1980-05-26 | Fluid power reducing structure of spool valve |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56167969A true JPS56167969A (en) | 1981-12-23 |
JPH0114469B2 JPH0114469B2 (en) | 1989-03-13 |
Family
ID=13411095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6972580A Granted JPS56167969A (en) | 1980-05-26 | 1980-05-26 | Fluid power reducing structure of spool valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56167969A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60125470A (en) * | 1983-12-08 | 1985-07-04 | Kayaba Ind Co Ltd | Fluid force reducing structure of spool valve |
JPH02288906A (en) * | 1990-04-12 | 1990-11-28 | Komatsu Ltd | Pilot valve for control of poppet valve |
DE112016000086B4 (en) | 2016-05-31 | 2018-12-27 | Komatsu Ltd. | SHIFT VALVE AND WORK VEHICLE |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5578867A (en) * | 1978-12-08 | 1980-06-13 | Diesel Kiki Co Ltd | Notch forming method for passage control valve |
-
1980
- 1980-05-26 JP JP6972580A patent/JPS56167969A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5578867A (en) * | 1978-12-08 | 1980-06-13 | Diesel Kiki Co Ltd | Notch forming method for passage control valve |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60125470A (en) * | 1983-12-08 | 1985-07-04 | Kayaba Ind Co Ltd | Fluid force reducing structure of spool valve |
JPH0364745B2 (en) * | 1983-12-08 | 1991-10-08 | Kayaba Industry Co Ltd | |
JPH02288906A (en) * | 1990-04-12 | 1990-11-28 | Komatsu Ltd | Pilot valve for control of poppet valve |
DE112016000086B4 (en) | 2016-05-31 | 2018-12-27 | Komatsu Ltd. | SHIFT VALVE AND WORK VEHICLE |
US10422437B2 (en) | 2016-05-31 | 2019-09-24 | Komatsu Ltd | Spool valve, operation device, and work vehicle |
Also Published As
Publication number | Publication date |
---|---|
JPH0114469B2 (en) | 1989-03-13 |
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