JPH0326871U - - Google Patents
Info
- Publication number
- JPH0326871U JPH0326871U JP8650289U JP8650289U JPH0326871U JP H0326871 U JPH0326871 U JP H0326871U JP 8650289 U JP8650289 U JP 8650289U JP 8650289 U JP8650289 U JP 8650289U JP H0326871 U JPH0326871 U JP H0326871U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- spool
- switching
- switching pressure
- valve
- 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
- 238000006073 displacement reaction Methods 0.000 claims description 3
Landscapes
- Fluid-Driven Valves (AREA)
- Multiple-Way Valves (AREA)
- Magnetically Actuated Valves (AREA)
Description
第１図は本考案に係る方向切換弁の断面図、第
２図は本考案の基礎となる先発明の方向切換弁を
示す。第３図は先発明方向切換弁における切換圧
Ｐｅとスプール変位の関係グラフ。第４図は従来
方式における方向切換弁の作動態様を示す。第５
図は先発明及び本考案における方向切換弁の作動
態様を示す。
図において；１……スプール、１ａ，１ｂ，１
ｃ，１ｄ……大径のランド部、１ｅ……ばね座、
２……スリーブ、３……弁孔、４……コイルばね
、５……調整ねじ、６……ケーシング、７……カ
バー、８……カバー、９……供給ポート、１０…
…Ｐｃの供給ポート、１１……Ｐ２の供給ポート
、１２……Ｐｓの供給ポート、１３……Ｐｔへ通
ずるポート、１４……Ｐｅの供給ポート、１５…
…スプール、１５ａ，１５ｂ，１５ｃ，１５ｄ…
…ランド部、１６……ソレノイド、１７……変位
センサー、１８……ボデイ、Ｐｅ……切換圧力、
Ｐｓ……供給圧力、Ｐ１，Ｐ２……圧力、Ｐｃ…
…コントロール圧力、ＰＴ……タンク。
FIG. 1 is a sectional view of the directional control valve according to the present invention, and FIG. 2 shows the directional control valve of the previous invention, which is the basis of the present invention. FIG. 3 is a graph showing the relationship between switching pressure Pe and spool displacement in the directional switching valve of the prior invention. FIG. 4 shows the operating mode of a conventional directional control valve. Fifth
The figure shows the operating mode of the directional control valve in the previous invention and the present invention. In the figure; 1...Spool, 1a, 1b, 1
c, 1d...Large diameter land portion, 1e...Spring seat,
2... Sleeve, 3... Valve hole, 4... Coil spring, 5... Adjustment screw, 6... Casing, 7... Cover, 8... Cover, 9... Supply port, 10...
...Pc supply port, 11... P2 supply port, 12...Ps supply port, 13...port leading to Pt, 14...Pe supply port, 15...
...Spool, 15a, 15b, 15c, 15d...
...Land portion, 16...Solenoid, 17...Displacement sensor, 18...Body, Pe...Switching pressure,
Ps...Supply pressure, P1 , P2 ...Pressure, Pc...
...control pressure, PT...tank.
Claims (1)
調整ねじによつてばね力を調整可能なばねを介し
てスプールを嵌挿し、該スプールに切換圧力の受
圧面積より大きな受圧面積を有するランド部を設
け、該ランド部を切換圧力に巾をもたせる圧力の
ポートに対応させ、前記スプールの面積差により
、オフセツト力がスプール変位の位置で働くよう
にし、切換圧力の方向によつて弁の開閉を行う圧
力値を変えることができるようにした弁において
、切換圧力対抗用の抵抗としての前記ばねに代え
ソレノイドを設けたことを特徴とする方向切換弁
。 A spool is inserted into the valve hole provided in the sleeve via a spring whose spring force can be adjusted by an adjustment screw that opposes the switching pressure, and a land portion having a pressure receiving area larger than the pressure receiving area of the switching pressure is provided on the spool. The land portion corresponds to a pressure port that has a width to the switching pressure, and the difference in area of the spool causes an offset force to act at the position of spool displacement, and the valve is opened and closed depending on the direction of the switching pressure. 1. A directional switching valve capable of changing a pressure value, characterized in that a solenoid is provided in place of the spring as a resistance for resisting switching pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8650289U JPH0326871U (en) | 1989-07-25 | 1989-07-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8650289U JPH0326871U (en) | 1989-07-25 | 1989-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0326871U true JPH0326871U (en) | 1991-03-19 |
Family
ID=31636054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8650289U Pending JPH0326871U (en) | 1989-07-25 | 1989-07-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0326871U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102297737B1 (en) * | 2021-01-15 | 2021-09-03 | (주)베스텍 | Gas spring with controllable return time |
-
1989
- 1989-07-25 JP JP8650289U patent/JPH0326871U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102297737B1 (en) * | 2021-01-15 | 2021-09-03 | (주)베스텍 | Gas spring with controllable return time |