JPH0330108U - - Google Patents
Info
- Publication number
- JPH0330108U JPH0330108U JP7801989U JP7801989U JPH0330108U JP H0330108 U JPH0330108 U JP H0330108U JP 7801989 U JP7801989 U JP 7801989U JP 7801989 U JP7801989 U JP 7801989U JP H0330108 U JPH0330108 U JP H0330108U
- Authority
- JP
- Japan
- Prior art keywords
- oil chamber
- nozzle
- spool
- side oil
- area 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.)
- Granted
Links
Landscapes
- Control Of Fluid Pressure (AREA)
- Servomotors (AREA)
Description
第１図はこの考案の一実施例を示す縦断面図、
第２図は従来の比例電磁式スプール弁を例示する
縦断面図である。
２１…ボデイ、２２…摺動孔、２３…メインス
プール、２３ｆ…ノズル、２５…小面積側油室、
２６…大面積側油室、２７…ノズル・フラツパ室
、３１…トルクモータ、３２…パイロツトスプー
ル、３３…フイードバツクスプリング、４０…フ
ラツパピストン、４１…小面積側油室、４２…大
面積側油室、６１…減圧弁。
FIG. 1 is a longitudinal sectional view showing an embodiment of this invention.
FIG. 2 is a longitudinal sectional view illustrating a conventional proportional electromagnetic spool valve. 21...Body, 22...Sliding hole, 23...Main spool, 23f...Nozzle, 25...Small area side oil chamber,
26...Large area side oil chamber, 27...Nozzle/flutter chamber, 31...Torque motor, 32...Pilot spool, 33...Feedback spring, 40...Flapper piston, 41...Small area side oil chamber, 42...Large area Side oil chamber, 61...pressure reducing valve.
Claims (1)
ードバツク方式により位置決めする比例電磁式ス
プール弁において、 ボデイ内に摺動可能に設けたメインスプールに
突設したノズルと、前記トルクモータのアクチユ
エータに装着したパイロツトスプールとの間にフ
ラツパピストンを摺動可能に介装し、該フラツパ
ピストンと前記ノズルとの間にギヤツプを形成す
ると共に前記パイロツトスプールとの間にフイー
ドバツクスプリングを係着し、前記メインスプー
ルの前記ノズル側及びその反対側にそれぞれ受圧
面積の大きい大面積側油室及び受圧面積の小さい
小面積側油室を設け、これらの小面積側油室及び
大面積側油室にパイロツト圧力を直接及びオリフ
イスを介してそれぞれ供給すると共に、これら両
油室を前記ノズルを介してタンクに連通させるよ
うにしたことを特徴とする比例電磁式スプール弁
。[Scope of Claim for Utility Model Registration] A proportional electromagnetic spool valve in which a three-way spool valve is positioned by a torque motor using a cuff feed back method, comprising: a nozzle protruding from a main spool slidably provided in a body; A flapper piston is slidably interposed between a pilot spool attached to an actuator, a gap is formed between the flapper piston and the nozzle, and a feedback spring is provided between the flapper piston and the pilot spool. A large-area side oil chamber with a large pressure-receiving area and a small-area side oil chamber with a small pressure-receiving area are provided on the nozzle side and the opposite side of the main spool, respectively, and these small-area side oil chamber and large-area side oil chamber A proportional electromagnetic spool valve, characterized in that pilot pressure is supplied to the oil chamber directly and through an orifice, and both oil chambers are communicated with a tank via the nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7801989U JPH0716170Y2 (en) | 1989-06-30 | 1989-06-30 | Proportional solenoid spool valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7801989U JPH0716170Y2 (en) | 1989-06-30 | 1989-06-30 | Proportional solenoid spool valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0330108U true JPH0330108U (en) | 1991-03-25 |
| JPH0716170Y2 JPH0716170Y2 (en) | 1995-04-12 |
Family
ID=31620928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7801989U Expired - Fee Related JPH0716170Y2 (en) | 1989-06-30 | 1989-06-30 | Proportional solenoid spool valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716170Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015219580A (en) * | 2014-05-14 | 2015-12-07 | 株式会社不二越 | Pressure reducing valve |
-
1989
- 1989-06-30 JP JP7801989U patent/JPH0716170Y2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015219580A (en) * | 2014-05-14 | 2015-12-07 | 株式会社不二越 | Pressure reducing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0716170Y2 (en) | 1995-04-12 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |