JPH0234805U - - Google Patents
Info
- Publication number
- JPH0234805U JPH0234805U JP11283388U JP11283388U JPH0234805U JP H0234805 U JPH0234805 U JP H0234805U JP 11283388 U JP11283388 U JP 11283388U JP 11283388 U JP11283388 U JP 11283388U JP H0234805 U JPH0234805 U JP H0234805U
- Authority
- JP
- Japan
- Prior art keywords
- diameter piston
- small
- piston
- power cylinder
- 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
- 239000012530 fluid Substances 0.000 claims 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
Landscapes
- Actuator (AREA)
Description
第１図は本考案の一実施例の組立断面図、第２
図は従来の２重ピストン式アクチユエータの組立
断面図である。
２：ダンプ弁、３：弁座、４：パワーシリンダ
、６：圧縮コイルばね、７：ピストンロツド、８
：引張コイルばね、１０：ブツシユ、１１：小径
ピストン、１２：段付き軸、１３：大径ピストン
、Ａ：室、Ｂ：流路、Ｃ：室、Ｄ：ブツシユの端
面、Ｅ，Ｆ，Ｇ：隙間嵌め部、Ｓ：弁閉時の大径
ピストンと小径ピストンとの軸方向間隔。
Figure 1 is an assembled sectional view of one embodiment of the present invention;
The figure is an assembled sectional view of a conventional double piston type actuator. 2: Dump valve, 3: Valve seat, 4: Power cylinder, 6: Compression coil spring, 7: Piston rod, 8
: Tension coil spring, 10: Bush, 11: Small diameter piston, 12: Stepped shaft, 13: Large diameter piston, A: Chamber, B: Channel, C: Chamber, D: End face of bush, E, F, G : Clearance fitting part, S: Axial distance between the large diameter piston and the small diameter piston when the valve is closed.
Claims (1)
アクチユエータにおいて、パワーシリンダに嵌装
されたブツシユに内接して摺動する小径ピストン
と、前記小径ピストンと一体に形成された段付き
軸に隙間嵌めされ、かつ、段部によつて弁閉時に
前記小径ピストンとの間に軸方向に所定の間隔を
保持して前記パワーシリンダに内接して摺動する
大径ピストンとを具備したことを特徴とする２重
ピストン式アクチユエータ。 In an actuator for a control valve or a shutoff valve operated by fluid pressure, a small-diameter piston that slides inwardly on a bush fitted in a power cylinder is fitted with a clearance between a stepped shaft formed integrally with the small-diameter piston. and a large-diameter piston that slides inscribed in the power cylinder while maintaining a predetermined distance in the axial direction between the small-diameter piston and the small-diameter piston due to a stepped portion when the valve is closed. Double piston type actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11283388U JPH0234805U (en) | 1988-08-30 | 1988-08-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11283388U JPH0234805U (en) | 1988-08-30 | 1988-08-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0234805U true JPH0234805U (en) | 1990-03-06 |
Family
ID=31352128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11283388U Pending JPH0234805U (en) | 1988-08-30 | 1988-08-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0234805U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04131723A (en) * | 1990-09-21 | 1992-05-06 | Matsushita Electric Ind Co Ltd | Semiconductor pressure sensor |
-
1988
- 1988-08-30 JP JP11283388U patent/JPH0234805U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04131723A (en) * | 1990-09-21 | 1992-05-06 | Matsushita Electric Ind Co Ltd | Semiconductor pressure sensor |