JPH0177104U - - Google Patents
Info
- Publication number
- JPH0177104U JPH0177104U JP1987172520U JP17252087U JPH0177104U JP H0177104 U JPH0177104 U JP H0177104U JP 1987172520 U JP1987172520 U JP 1987172520U JP 17252087 U JP17252087 U JP 17252087U JP H0177104 U JPH0177104 U JP H0177104U
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- signal output
- displacement
- signal input
- signal
- 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 5
- 239000000696 magnetic material Substances 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
Landscapes
- Servomotors (AREA)
Description
第１図は本考案の第１の実施例を示し、ノズル
フラツパ式の電油サーボバルブの断面構成図、第
２図は本考案の第２の実施例を示し、ノズルフラ
ツパ式の電油サーボバルブのフイードバツクマグ
ネツト部分の要部構成図、第３図は本考案の第３
の実施例を示し、ノズルフラツパ式の電油サーボ
バルブのフイードバツクマグネツト部分の、第２
図と類似の要部構成図、第４図は第３図の―
線に沿う部分断面図、第５図は本考案の第４の実
施例を示し、ノズルフラツパ式の電油サーボバル
ブのフイードバツクマグネツト部分の、第２図と
類似の要部構成図、第６図は従来のノズルフラツ
パ式の電油サーボバルブの断面構成図である。
１……トルクモータ、２……サーボバルブ本体
、６，６ａ〜６ｃ……フイードバツクマグネツト
、７，７ａ〜７ｃ……永久磁石、９ａ，９ｃ……
永久磁石、１５，１５ａ〜１５ｃ……フラツパ（
信号出力部材）、２０……第１増幅部、２０ａ，
２０ｂ……ノズル、３０……第２増幅部、３１…
…スプール（信号入力部材）。
Fig. 1 shows a first embodiment of the present invention, which is a sectional view of a nozzle flap type electro-hydraulic servo valve, and Fig. 2 shows a second embodiment of the present invention, which shows a nozzle flap type electro-hydraulic servo valve. The main part configuration diagram of the feedback magnet part, Figure 3 is the third part of the present invention.
The second embodiment of the feedback magnet part of the nozzle flap type electro-hydraulic servo valve is shown.
Figure 4 is a configuration diagram of the main parts similar to the figure shown in Figure 3.
FIG. 5, a partial cross-sectional view taken along a line, shows a fourth embodiment of the present invention, and a main part configuration diagram similar to FIG. FIG. 6 is a cross-sectional configuration diagram of a conventional nozzle flap type electro-hydraulic servo valve. 1... Torque motor, 2... Servo valve body, 6, 6a to 6c... Feedback magnet, 7, 7a to 7c... Permanent magnet, 9a, 9c...
Permanent magnet, 15, 15a to 15c...Flatspa (
signal output member), 20...first amplification section, 20a,
20b... Nozzle, 30... Second amplification section, 31...
...Spool (signal input member).
Claims (1)
械信号に変換するトルクモータと、前記信号出力
部材の中立位置からの変位量に応じたパイロツト
油圧を発生させる第１増幅部と、該パイロツト油
圧に応動して変位する信号入力部材を有し、該信
号入力部材の変位量に応じて作動油圧を発生させ
る第２増幅部とを備えるサーボバルブにおいて、
前記信号入力部材及び信号出力部材の少なくとも
一方に永久磁石を取り付け、該永久磁石の磁気力
により前記信号入力部材の変位量を前記信号出力
部材にフイードバツクさせることを特徴とする電
油サーボバルブ。 (2) 前記永久磁石は前記信号入力部材に固設さ
れ、前記信号出力部材は該永久磁石の変位に追随
する磁性材料からなる実用新案登録請求の範囲第
１項記載の電油サーボバルブ。 (3) 前記信号入力部材に固設された永久磁石に
対向して前記信号出力部材に永久磁石が固設され
ることを特徴とする実用新案登録請求の範囲第２
項記載の電油サーボバルブ。[Claims for Utility Model Registration] (1) A torque motor that converts an electric signal into a mechanical signal as the amount of displacement of a signal output member, and a motor that generates pilot oil pressure in accordance with the amount of displacement of the signal output member from a neutral position. A servo valve comprising a first amplifying section and a second amplifying section that has a signal input member that is displaced in response to the pilot hydraulic pressure and generates a working hydraulic pressure according to the amount of displacement of the signal input member,
An electro-hydraulic servo valve, characterized in that a permanent magnet is attached to at least one of the signal input member and the signal output member, and the displacement amount of the signal input member is fed back to the signal output member by the magnetic force of the permanent magnet. (2) The electro-hydraulic servo valve according to claim 1, wherein the permanent magnet is fixed to the signal input member, and the signal output member is made of a magnetic material that follows the displacement of the permanent magnet. (3) Utility model registration claim 2, characterized in that a permanent magnet is fixedly installed on the signal output member opposite to the permanent magnet fixedly installed on the signal input member.
Electro-hydraulic servo valve described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987172520U JPH0177104U (en) | 1987-11-11 | 1987-11-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987172520U JPH0177104U (en) | 1987-11-11 | 1987-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0177104U true JPH0177104U (en) | 1989-05-24 |
Family
ID=31464489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987172520U Pending JPH0177104U (en) | 1987-11-11 | 1987-11-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0177104U (en) |
-
1987
- 1987-11-11 JP JP1987172520U patent/JPH0177104U/ja active Pending
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