JPH0439301U - - Google Patents
Info
- Publication number
- JPH0439301U JPH0439301U JP7958890U JP7958890U JPH0439301U JP H0439301 U JPH0439301 U JP H0439301U JP 7958890 U JP7958890 U JP 7958890U JP 7958890 U JP7958890 U JP 7958890U JP H0439301 U JPH0439301 U JP H0439301U
- Authority
- JP
- Japan
- Prior art keywords
- spool
- screw shaft
- tank chamber
- oil draining
- draining tank
- 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
- 230000008713 feedback mechanism Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
Landscapes
- Servomotors (AREA)
Description
第１図は本考案の１実施例による電油サーボア
クチユエータの縦断面図、第２図は従来の電油サ
ーボアクチユエータの縦断面図、第３図は他の従
来例を示す縦断面図、第４図は第２図のＧ部の部
分拡大断面図である。
２……ヘツド側カバー、３……シリンダ部、４
……ピストンロツド、５……ピストン、７……ボ
ールねじ軸、８……スプール、９……連結軸、１
０……サーボモータ、２０……給油室、２１……
圧力油室、２２……排油用タンク室、２３……空
間部、２５……排油タンクポート、２９……ボー
ルねじナツト、３０……タンクライン配管、３１
……背圧、３２……ドレン室、３４……スプール
カバー、Ｔ……排油タンク、Ｄ……ドレンタンク
。
Fig. 1 is a longitudinal sectional view of an electro-hydraulic servo actuator according to an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of a conventional electro-hydraulic servo actuator, and Fig. 3 is a longitudinal sectional view of another conventional example. The top view and FIG. 4 are partially enlarged sectional views of section G in FIG. 2. 2...Head side cover, 3...Cylinder part, 4
... Piston rod, 5 ... Piston, 7 ... Ball screw shaft, 8 ... Spool, 9 ... Connection shaft, 1
0... Servo motor, 20... Oil supply room, 21...
Pressure oil chamber, 22... Oil drain tank chamber, 23... Space, 25... Oil drain tank port, 29... Ball screw nut, 30... Tank line piping, 31
...Back pressure, 32...Drain chamber, 34...Spool cover, T...Drain tank, D...Drain tank.
Claims (1)
フイードバツク機構を有する電油サーボアクチユ
エータにおいて、前記スプール移動用のねじ軸を
回転させるサーボモータと、前記スプールまたは
前記ねじ軸が貫通しているヘツド側カバーと、該
ヘツド側カバーの内部に形成されかつ前記スプー
ルまたはねじ軸の周囲に配置された排油用タンク
室と、前記スプールまたはねじ軸の排油用タンク
室への貫通部で該スプールの外周に設けられかつ
該スプールを前記排油用タンク室の隔離するスプ
ールカバーを有することを特徴とする電油サーボ
アクチユエータ。 In an electro-hydraulic servo actuator having a mechanical feedback mechanism in which a piston moves to follow a spool, the servo motor rotates the screw shaft for moving the spool, and the head side through which the spool or the screw shaft passes through. a cover, an oil draining tank chamber formed inside the head side cover and arranged around the spool or screw shaft, and a penetrating portion of the spool or screw shaft to the oil draining tank chamber, An electro-hydraulic servo actuator characterized by having a spool cover provided on the outer periphery and isolating the spool from the oil draining tank chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990079588U JP2538434Y2 (en) | 1990-07-26 | 1990-07-26 | Electro-hydraulic servo actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990079588U JP2538434Y2 (en) | 1990-07-26 | 1990-07-26 | Electro-hydraulic servo actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0439301U true JPH0439301U (en) | 1992-04-03 |
| JP2538434Y2 JP2538434Y2 (en) | 1997-06-18 |
Family
ID=31623881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990079588U Expired - Lifetime JP2538434Y2 (en) | 1990-07-26 | 1990-07-26 | Electro-hydraulic servo actuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2538434Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07119165A (en) * | 1993-10-21 | 1995-05-09 | Kyokado Eng Co Ltd | Self-sustaining type cell structure |
| JPWO2008081803A1 (en) * | 2006-12-28 | 2010-04-30 | 株式会社小松製作所 | EGR valve device |
| JP2011503482A (en) * | 2007-11-15 | 2011-01-27 | ヘルビガー アウトマティジールングステヒニーク ホールディング ゲゼルシャフト ミット ベシュレンクテル ハフツング | Electric hydraulic booster |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59170512A (en) * | 1983-03-18 | 1984-09-26 | Toshiba Mach Co Ltd | Linear actuator |
| JPS6353001U (en) * | 1986-09-26 | 1988-04-09 |
-
1990
- 1990-07-26 JP JP1990079588U patent/JP2538434Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59170512A (en) * | 1983-03-18 | 1984-09-26 | Toshiba Mach Co Ltd | Linear actuator |
| JPS6353001U (en) * | 1986-09-26 | 1988-04-09 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07119165A (en) * | 1993-10-21 | 1995-05-09 | Kyokado Eng Co Ltd | Self-sustaining type cell structure |
| JPWO2008081803A1 (en) * | 2006-12-28 | 2010-04-30 | 株式会社小松製作所 | EGR valve device |
| JP2011503482A (en) * | 2007-11-15 | 2011-01-27 | ヘルビガー アウトマティジールングステヒニーク ホールディング ゲゼルシャフト ミット ベシュレンクテル ハフツング | Electric hydraulic booster |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2538434Y2 (en) | 1997-06-18 |