JPH0462486U - - Google Patents
Info
- Publication number
- JPH0462486U JPH0462486U JP10278490U JP10278490U JPH0462486U JP H0462486 U JPH0462486 U JP H0462486U JP 10278490 U JP10278490 U JP 10278490U JP 10278490 U JP10278490 U JP 10278490U JP H0462486 U JPH0462486 U JP H0462486U
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- spool
- cylinder
- pressure
- pilot
- 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
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例による圧力制御弁の
構成図、第２図は従来の圧力制御弁の構成図であ
る。
１……シリンダ、３……スプール、５……フイ
ードバツク室、７……室、９，１１……圧縮コイ
ルスプリング、１３……パイロツト室、１５……
弁機構、１７……ソレノイド、２５……油圧ポン
プ（油圧供給源）、Ａ１……フイードバツク室側
のスプリングの受圧面積、Ａ２……室側のスプー
ルの受圧面積。
FIG. 1 is a block diagram of a pressure control valve according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional pressure control valve. 1... Cylinder, 3... Spool, 5... Feedback chamber, 7... Chamber, 9, 11... Compression coil spring, 13... Pilot chamber, 15...
Valve mechanism, 17...Solenoid, 25...Hydraulic pump (hydraulic supply source), A1 ...Pressure receiving area of the spring on the feedback chamber side, A2 ...Pressure receiving area of the spool on the chamber side.
Claims (1)
されたスプールと、上記スプールの一端側のシリ
ンダ内に形成された室と、上記スプールの他端側
のシリンダ内に形成されたフイードバツク室と、
上記室及びフイードバツク室内にそれぞれ装着さ
れた圧縮コイルスプリングと、上記室に連設され
たパイロツト室と、上記パイロツト室に連設され
パイロツト室との間に弁機構を構成するソレノイ
ドと、を具備し、上記パイロツト室に圧油供給源
からの圧油を作用させるとともにソレノイドによ
り弁機構を絞り、パイロツト室ひいては室内の圧
力を上昇させてスプールを他端側に移動させ、ス
プールの他端側への移動により圧油供給源からの
圧油をシリンダを介してフイードバツク室に作用
させ、スプールを一端側に移動させて中立位置に
戻すように作用する圧力制御弁において、上記フ
イードバツク室におけるスプールの受圧面積をＡ
１とし、上記室におけるスプールの受圧面積をＡ
２とした場合、Ａ１＞Ａ２としたことを特徴とす
る圧力制御弁。 a cylinder, a spool slidably housed in the cylinder, a chamber formed in the cylinder at one end of the spool, and a feedback chamber formed in the cylinder at the other end of the spool;
Compression coil springs are installed in the chamber and the feedback chamber, a pilot chamber is connected to the chamber, and a solenoid is connected to the pilot chamber and forms a valve mechanism between the pilot chamber and the pilot chamber. Pressure oil from the pressure oil supply source is applied to the pilot chamber, and the valve mechanism is throttled by the solenoid, increasing the pressure in the pilot chamber and the interior of the chamber to move the spool to the other end. In a pressure control valve that acts to move pressure oil from a pressure oil supply source to a feedback chamber through a cylinder and move the spool to one end side and return it to a neutral position, the pressure receiving area of the spool in the feedback chamber is A
1 , and the pressure receiving area of the spool in the above chamber is A.
2 , a pressure control valve characterized in that A 1 >A 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10278490U JPH0462486U (en) | 1990-09-29 | 1990-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10278490U JPH0462486U (en) | 1990-09-29 | 1990-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0462486U true JPH0462486U (en) | 1992-05-28 |
Family
ID=31847330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10278490U Pending JPH0462486U (en) | 1990-09-29 | 1990-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0462486U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7588160B2 (en) | 2004-01-14 | 2009-09-15 | Highland Champ Corporation | Combined storage apparatus |
| JP2017180641A (en) * | 2016-03-30 | 2017-10-05 | 日立建機株式会社 | Pressure reduction valve unit |
-
1990
- 1990-09-29 JP JP10278490U patent/JPH0462486U/ja active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7588160B2 (en) | 2004-01-14 | 2009-09-15 | Highland Champ Corporation | Combined storage apparatus |
| JP2017180641A (en) * | 2016-03-30 | 2017-10-05 | 日立建機株式会社 | Pressure reduction valve unit |
| WO2017168956A1 (en) * | 2016-03-30 | 2017-10-05 | 日立建機株式会社 | Pressure reducing valve unit |
| CN107923550A (en) * | 2016-03-30 | 2018-04-17 | 日立建机株式会社 | Depressurize valve cell |
| CN107923550B (en) * | 2016-03-30 | 2019-09-27 | 日立建机株式会社 | Depressurize valve cell |
| US10443746B2 (en) | 2016-03-30 | 2019-10-15 | Hitachi Construction Machinery Co., Ltd. | Pressure reducing valve unit |
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