JPS6421877U - - Google Patents
Info
- Publication number
- JPS6421877U JPS6421877U JP11653287U JP11653287U JPS6421877U JP S6421877 U JPS6421877 U JP S6421877U JP 11653287 U JP11653287 U JP 11653287U JP 11653287 U JP11653287 U JP 11653287U JP S6421877 U JPS6421877 U JP S6421877U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- pilot
- pressure control
- spool
- control chamber
- 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
- 230000007423 decrease Effects 0.000 claims 2
- 239000012530 fluid Substances 0.000 claims 2
Landscapes
- Magnetically Actuated Valves (AREA)
Description
第１図は本考案一実施例の電磁比例式圧力制御
弁示す断面図、第２図は実施例制御弁の要部を示
す拡大断面図、第３図は実施例制御弁のソレノイ
ドの印加電流と制御液圧との関係を示すグラフで
ある。
１０……バルブボデイ、１６……パイロツトバ
ルブ穴、１７……メインバルブ穴、２０……ソレ
ノイド、３０……パイロツトスプール、３２……
スプール側小径ランド、３３……環状受圧部、３
６……スプール側大径ランド、３７……段差部（
スプール側）、４０……メインスプール、４４，
４５……受圧面、１６２……パイロツト圧力制御
室、１６４……パイロツトフイードバツク室、１
６７……ボデイ側大径ランド、１６８……ボデイ
側小径ランド、１７２……メイン圧力制御室。
Fig. 1 is a sectional view showing an electromagnetic proportional pressure control valve according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view showing the main parts of the embodiment control valve, and Fig. 3 is an applied current to the solenoid of the embodiment control valve. It is a graph which shows the relationship between and control hydraulic pressure. 10... Valve body, 16... Pilot valve hole, 17... Main valve hole, 20... Solenoid, 30... Pilot spool, 32...
Spool side small diameter land, 33...Annular pressure receiving part, 3
6...Large diameter land on spool side, 37...Step part (
spool side), 40...main spool, 44,
45...Pressure receiving surface, 162...Pilot pressure control chamber, 164...Pilot feedback chamber, 1
67...Large diameter land on the body side, 168...Small diameter land on the body side, 172...Main pressure control chamber.
Claims (1)
に設けられ、増圧方向にソレノイドに押圧される
と共に、パイロツトフイードバツク室にフイード
バツクされるパイロツト圧力制御室の液圧を減圧
方向にパイロツト受圧部で受圧して、パイロツト
圧力制御室の液圧を増減させるパイロツトスプー
ルと、 前記バルブボデイのメインバルブ穴に摺動可能
に設けられ、増圧方向に前記パイロツト圧力制御
室の液圧を受圧すると共に、減圧方向にフイード
バツク液圧を受圧して、メイン圧力制御室の液圧
を増減させるメインスプールと、 を備え、ソレノイドの電磁力に比例させてメイン
圧力制御室の液圧を制御するようにした電磁比例
式圧力制御弁において、 前記パイロツトスプール及びそれに対応するパ
イロツトバルブ穴に、大径ランドと小径ランドと
を設けて径差による段差部を形成し、 該段差部に前記パイロツトフイードバツク室を
形成し、 前記パイロツトスプールの大径ランドの外周部
に形成される小径ランドとの径差部分である環状
受圧部を前記パイロツト受圧部としたことを特徴
とする電磁比例式圧力制御弁。[Claim for Utility Model Registration] A fluid pressure control chamber that is slidably provided in a pilot valve hole of a valve body and is pressed by a solenoid in the pressure increasing direction, and also reduces fluid pressure in a pilot pressure control chamber that is fed back to a pilot feedback chamber. a pilot spool that increases or decreases the hydraulic pressure in the pilot pressure control chamber by receiving pressure in the pilot pressure receiving section in the direction of pressure increase; and a main spool that increases or decreases the hydraulic pressure in the main pressure control chamber by receiving feedback hydraulic pressure in the direction of pressure reduction, and controls the hydraulic pressure in the main pressure control chamber in proportion to the electromagnetic force of the solenoid. In the electromagnetic proportional pressure control valve, a large-diameter land and a small-diameter land are provided in the pilot spool and the corresponding pilot valve hole to form a stepped portion due to a diameter difference, and the pilot spool is disposed in the stepped portion. An electromagnetic proportional pressure control characterized in that the pilot pressure receiving portion is an annular pressure receiving portion that forms an yield back chamber and is a diameter difference portion between the large diameter land of the pilot spool and the small diameter land formed on the outer periphery of the pilot spool. valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11653287U JPS6421877U (en) | 1987-07-29 | 1987-07-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11653287U JPS6421877U (en) | 1987-07-29 | 1987-07-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6421877U true JPS6421877U (en) | 1989-02-03 |
Family
ID=31359151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11653287U Pending JPS6421877U (en) | 1987-07-29 | 1987-07-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6421877U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010007778A (en) * | 2008-06-27 | 2010-01-14 | Aisin Aw Co Ltd | Solenoid valve |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6111071B2 (en) * | 1977-08-26 | 1986-04-01 | Casio Computer Co Ltd |
-
1987
- 1987-07-29 JP JP11653287U patent/JPS6421877U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6111071B2 (en) * | 1977-08-26 | 1986-04-01 | Casio Computer Co Ltd |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010007778A (en) * | 2008-06-27 | 2010-01-14 | Aisin Aw Co Ltd | Solenoid valve |
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