JPH0330107U - - Google Patents
Info
- Publication number
- JPH0330107U JPH0330107U JP7801889U JP7801889U JPH0330107U JP H0330107 U JPH0330107 U JP H0330107U JP 7801889 U JP7801889 U JP 7801889U JP 7801889 U JP7801889 U JP 7801889U JP H0330107 U JPH0330107 U JP H0330107U
- Authority
- JP
- Japan
- Prior art keywords
- oil chamber
- flapper
- main
- side oil
- sub
- 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
- Servomotors (AREA)
- Control Of Fluid Pressure (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…メインノズル、２５…零調整部
、２６…大面積側油室、２７ａ…第１のノズル・
フラツパ室、２７ｂ…第２のノズル・フラツパ室
、２８…比例ソレノイド、２９…可動鉄心、２９
ａ…プツシユロツド、３０…サブフラツパ、３３
…小面積側油室、３５…流入口、３６…流出口、
４０…フラツパピストン、４０ａ…サブノズル、
４０ｂ…メインフラツパ、４１…小面積側油室、
４２…大面積側油室、５１…第１のパイロツト油
路、５１ｂ…第１のオリフイス、５２…第２のパ
イロツト油路、５２ａ…第２のオリフイス。
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...Main nozzle, 25...Zero adjustment section, 26...Large area oil chamber, 27a...First nozzle.
Flutter chamber, 27b...Second nozzle flap chamber, 28...Proportional solenoid, 29...Movable iron core, 29
a... Push rod, 30... Sub flap, 33
...small area oil chamber, 35...inlet, 36...outlet,
40...Flappa piston, 40a...Sub nozzle,
40b...Main flapper, 41...Small area side oil chamber,
42... Large area side oil chamber, 51... First pilot oil passage, 51b... First orifice, 52... Second pilot oil passage, 52a... Second orifice.
Claims (1)
の流入口または流出口を開閉するメインスプール
を閉方向へ付勢して摺動可能に設け、該メインス
プールの先端部にメインノズルを突設すると共に
、前記比例ソレノイドのプツシユロツド先端部に
サブフラツパをその出力方向と反対方向へ付勢し
て固設した比例電磁式スプール弁において、 前記メインスプールのメインノズル側に有効圧
力作用面積の大きい大面積側油室を、反対側に有
効圧力作用面積の小さい小面積側油室を形成する
と共に、前記メインノズルとサブフラツパとの間
にフラツパピストンを摺動可能に介装し、該フラ
ツパピストンに、前記サブフラツパに対向するサ
ブノズルと、前記メインノズルに対向するメイン
フラツパとを突設し、そのそれぞれの側に有効圧
力作用面積の異なる大面積側油室と小面積側油室
とを形成し、前記メインスプールの小面積側油室
及び大面積側油室に、それぞれ第１のパイロツト
圧力を直接及び第１のオリフイスを介して供給し
、前記フラツパピストンの小面積側油室及び大画
面側油室に、それぞれ第２のパイロツト圧力を直
接及び第２のオリフイスを介して供給して、フラ
ツパピストンの前記両油室を前記サブノズルを介
してタンクに導く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 main spool for opening and closing an oil inlet or an oil outlet is provided in a body with a proportional solenoid fixed to one end so as to be slidable by biasing it in the closing direction. In a proportional electromagnetic spool valve, in which a main nozzle is protruded from the main nozzle, and a sub flapper is fixed to the tip of the push rod of the proportional solenoid by urging it in a direction opposite to its output direction, the proportional solenoid is effective on the main nozzle side of the main spool. A large-area side oil chamber with a large pressure acting area is formed on the opposite side, and a small-area side oil chamber with a small effective pressure acting area is formed on the opposite side, and a flapper piston is slidably interposed between the main nozzle and the sub flapper. The flapper piston is provided with a sub nozzle facing the sub flapper and a main flapper facing the main nozzle, and a large area side oil chamber and a small area side oil chamber having different effective pressure acting areas on each side. A first pilot pressure is supplied directly and through a first orifice to the small-area side oil chamber and the large-area side oil chamber of the main spool, respectively, and the small-area side oil chamber of the flapper piston is A second pilot pressure is supplied to the oil chamber and the large screen side oil chamber, respectively, directly and through a second orifice, so that both oil chambers of the flapper piston are guided to the tank via the sub-nozzle. A proportional solenoid spool valve characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7801889U JPH0716169Y2 (en) | 1989-06-30 | 1989-06-30 | Proportional solenoid spool valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7801889U JPH0716169Y2 (en) | 1989-06-30 | 1989-06-30 | Proportional solenoid spool valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0330107U true JPH0330107U (en) | 1991-03-25 |
| JPH0716169Y2 JPH0716169Y2 (en) | 1995-04-12 |
Family
ID=31620926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7801889U Expired - Fee Related JPH0716169Y2 (en) | 1989-06-30 | 1989-06-30 | Proportional solenoid spool valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716169Y2 (en) |
-
1989
- 1989-06-30 JP JP7801889U patent/JPH0716169Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0716169Y2 (en) | 1995-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0330107U (en) | ||
| JPS6185701U (en) | ||
| GB1501578A (en) | Fluid operated ram | |
| JPH0330108U (en) | ||
| JPS5926082Y2 (en) | Fluid operation valve device for work machine automatic control device | |
| JPH03104578U (en) | ||
| JPH0333275U (en) | ||
| JPH0229145U (en) | ||
| JPH0333276U (en) | ||
| JPS6241970U (en) | ||
| JPH0414801U (en) | ||
| JPH0312002U (en) | ||
| JPS6128543Y2 (en) | ||
| JPH01158802U (en) | ||
| JPH01164514U (en) | ||
| JPH0219802U (en) | ||
| JPS62176568U (en) | ||
| JPH0224104U (en) | ||
| JPH0326879U (en) | ||
| JPH0326881U (en) | ||
| JPS60118075U (en) | Proportional solenoid type spool valve | |
| JPH0241778U (en) | ||
| JPS63150177U (en) | ||
| JPS63101293U (en) | ||
| JPS6168161U (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |