JPS6457474U - - Google Patents
Info
- Publication number
- JPS6457474U JPS6457474U JP15318187U JP15318187U JPS6457474U JP S6457474 U JPS6457474 U JP S6457474U JP 15318187 U JP15318187 U JP 15318187U JP 15318187 U JP15318187 U JP 15318187U JP S6457474 U JPS6457474 U JP S6457474U
- Authority
- JP
- Japan
- Prior art keywords
- pilot
- pressure
- spool
- pressure control
- hole
- 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
- 238000005192 partition Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims 4
- 239000012530 fluid Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
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、11……バルブ穴、1
1a……小径孔、11b……大径孔、15……隔
壁、16……パイロツトバルブ孔、17……メイ
ンバルブ孔、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、36……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、16
2……パイロツト圧力制御室、164……パイロ
ツトフイードバツク室、167……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, 11... Valve hole, 1
1a...Small diameter hole, 11b...Large diameter hole, 15...Partition wall, 16...Pilot valve hole, 17...Main valve hole, 20...Solenoid, 30...Pilot spool, 32...Spool side small diameter land , 33... Annular pressure receiving part, 36... Spool side large diameter land, 37... Step part (spool side), 40...
...Main spool, 44, 45...Pressure receiving surface, 16
2...Pilot pressure control chamber, 164...Pilot feedback chamber, 167...Body side large diameter land, 168...Body side small diameter land, 172
...Main pressure control room.
Claims (1)
に設けられ、パイロツト圧力制御室の液圧を増減
可能なパイロツトスプールと、バルブボデイのメ
インバルブ孔に摺動可能に設けられ、メイン圧力
制御室の液圧を増減可能なメインスプールとを備
え、前記パイロツトスプールは、増圧方向にソレ
ノイドの電磁力で、また、減圧方向にはパイロツ
ト圧力制御室のフイードバツク液圧をパイロツト
受圧部で受圧して摺動され、一方、前記メインス
プールは、増圧方向に前記パイロツト圧力制御室
の液圧を受圧して、また、減圧方向にはメイン圧
力制御室のフイードバツク液圧を受圧して摺動さ
れることで、ソレノイドの電磁力に比例してメイ
ン圧力制御室の液圧が制御される電磁比例式圧力
制御弁において、 前記バルブボデイに同一軸心の小径孔と大径孔
から成るバルブ孔を形成し、このバルブ孔の径差
による段差部に隔壁を設けて内部を区画して、小
径孔と大径孔のうちの一方をパイロツトバルブ孔
とすると共に、他方をメインバルブ穴とし、 前記パイロツトスプール及びそれに対応するパ
イロツトバルブ孔に、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、 該段差部を前記パイロツト圧力室のフイードバ
ツク液圧を導くパイロツトフイードバツク室を形
成し、 前記パイロツト受圧部を、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としたことを特徴と
する電磁比例式圧力制御弁。[Claims for Utility Model Registration] A pilot spool is slidably provided in the pilot valve hole of the valve body and is capable of increasing or decreasing the fluid pressure in the pilot pressure control chamber, and a pilot spool is slidably provided in the main valve hole of the valve body and is capable of increasing or decreasing the hydraulic pressure in the pilot pressure control chamber. The pilot spool is equipped with a main spool that can increase or decrease the hydraulic pressure in the pressure control chamber, and the pilot spool operates in the pressure increasing direction by the electromagnetic force of the solenoid, and in the pressure decreasing direction by applying the feedback hydraulic pressure in the pilot pressure control chamber to the pilot pressure receiving part. On the other hand, the main spool slides by receiving the hydraulic pressure of the pilot pressure control chamber in the pressure increasing direction, and by receiving the feedback hydraulic pressure of the main pressure control chamber in the pressure decreasing direction. In the electromagnetic proportional pressure control valve in which the hydraulic pressure in the main pressure control chamber is controlled in proportion to the electromagnetic force of the solenoid when the valve body is moved, the valve body has a valve hole consisting of a small diameter hole and a large diameter hole centered on the same axis. A partition wall is provided at the step part due to the diameter difference of the valve hole to partition the inside, and one of the small diameter hole and the large diameter hole is used as a pilot valve hole, and the other is used as a main valve hole, The pilot spool and the corresponding pilot valve hole are provided with a large diameter land and a small diameter land to form a stepped portion due to the difference in diameter, and the pilot feedback chamber is configured such that the stepped portion is used to guide the feedback liquid pressure of the pilot pressure chamber. The electromagnetic proportional pressure control valve is characterized in that the pilot pressure receiving portion is an annular pressure receiving portion having a diameter difference between the large diameter land of the pilot spool and the small diameter land formed on the outer periphery of the pilot spool.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15318187U JPH0743568Y2 (en) | 1987-10-06 | 1987-10-06 | Electromagnetic proportional pressure control valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15318187U JPH0743568Y2 (en) | 1987-10-06 | 1987-10-06 | Electromagnetic proportional pressure control valve |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6457474U true JPS6457474U (en) | 1989-04-10 |
JPH0743568Y2 JPH0743568Y2 (en) | 1995-10-09 |
Family
ID=31428787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15318187U Expired - Lifetime JPH0743568Y2 (en) | 1987-10-06 | 1987-10-06 | Electromagnetic proportional pressure control valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0743568Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6781646B2 (en) * | 2017-03-06 | 2020-11-04 | Kyb株式会社 | Fluid pressure control device equipped with an electromagnetic pressure reducing valve and an electromagnetic pressure reducing valve |
-
1987
- 1987-10-06 JP JP15318187U patent/JPH0743568Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0743568Y2 (en) | 1995-10-09 |
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