JPS5783763A - Direct drive type servo valve - Google Patents
Direct drive type servo valveInfo
- Publication number
- JPS5783763A JPS5783763A JP15955380A JP15955380A JPS5783763A JP S5783763 A JPS5783763 A JP S5783763A JP 15955380 A JP15955380 A JP 15955380A JP 15955380 A JP15955380 A JP 15955380A JP S5783763 A JPS5783763 A JP S5783763A
- Authority
- JP
- Japan
- Prior art keywords
- diameter
- spool
- inside diameter
- stem
- air gap
- 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)
Abstract
PURPOSE: To improve the response of the valve by having a spool with the diameter ratio of its stem to land above 0.7 and making the spool hollow.
CONSTITUTION: A hollow spool has a land (diameter D) and a stem (diameter d) on its outside diameter and controls the hydraulic oil while its inside diameter consists of a through hole having an inside diameter d' and larger diameter holes at its both ends thereby reducing the weight of the spool, the ratio d/D being held above 0.7. A permanent magnet 2 has a annular yoke 1 on its one end and a center pole piece 3 on its another end, the outside diameter of said center piece 3 head being concentric to the inside diameter of the yoke 1 and fitted together with small distance air gap in between to form a magnetic circuit to form strong magnetic field radially in said air gap. A drive coil 5 receives the electro magnetic force in axial direction which is conveyed to a bobbin 4 to become a driving force of the spool 9 to deform a rubber member 6 compression or tension balancing it with its reaction force.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15955380A JPS5783763A (en) | 1980-11-14 | 1980-11-14 | Direct drive type servo valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15955380A JPS5783763A (en) | 1980-11-14 | 1980-11-14 | Direct drive type servo valve |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5783763A true JPS5783763A (en) | 1982-05-25 |
Family
ID=15696251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15955380A Pending JPS5783763A (en) | 1980-11-14 | 1980-11-14 | Direct drive type servo valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5783763A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106594321A (en) * | 2016-11-22 | 2017-04-26 | 浙江大学 | Proportional reversing valve combination valve element based on SLM technology and proportional reversing valve |
CN106704634A (en) * | 2016-11-22 | 2017-05-24 | 浙江大学 | SLM technology based proportional directional valve element and proportional directional valve |
US10247315B2 (en) | 2016-10-18 | 2019-04-02 | Caterpillar Inc. | Spool for hydraulic valve |
-
1980
- 1980-11-14 JP JP15955380A patent/JPS5783763A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10247315B2 (en) | 2016-10-18 | 2019-04-02 | Caterpillar Inc. | Spool for hydraulic valve |
CN106594321A (en) * | 2016-11-22 | 2017-04-26 | 浙江大学 | Proportional reversing valve combination valve element based on SLM technology and proportional reversing valve |
CN106704634A (en) * | 2016-11-22 | 2017-05-24 | 浙江大学 | SLM technology based proportional directional valve element and proportional directional valve |
CN106704634B (en) * | 2016-11-22 | 2019-02-19 | 浙江大学 | Proportional reversing valve spool and proportional reversing valve based on SLM technology |
CN106594321B (en) * | 2016-11-22 | 2019-08-02 | 浙江大学 | Proportional reversing valve combination valve core and proportional reversing valve based on SLM technology |
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