JPH0250717U - - Google Patents
Info
- Publication number
- JPH0250717U JPH0250717U JP12792088U JP12792088U JPH0250717U JP H0250717 U JPH0250717 U JP H0250717U JP 12792088 U JP12792088 U JP 12792088U JP 12792088 U JP12792088 U JP 12792088U JP H0250717 U JPH0250717 U JP H0250717U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- control valve
- output port
- pressure control
- feedback
- 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
- 239000010720 hydraulic oil Substances 0.000 claims 2
Landscapes
- Control Of Fluid Pressure (AREA)
- Magnetically Actuated Valves (AREA)
Description
第１図は本考案の一実施例を示す比例減圧弁及
びクラツチパツクの概略断面図、第２図は第１図
の比例減圧弁の指令電流―出力圧特性を示すグラ
フ、第３図は、第１図の実施例の応答遅れを示す
グラフ、第４図は従来例の応答例を示すグラフで
ある。
図中、１は比例減圧弁、２は比例ソレノイド、
３はバルブ部、１０は供給ポート、１１はドレン
ポート、１２は出力ポート、１５は配管、１６は
クラツチパツク、１７はスプール、２１はフイー
ドバツク室、２２はフイードバツク流路、２３は
チヨーク絞り、２６はアキユムレータ、３５はア
キユムレータとしてのピストンである。
Fig. 1 is a schematic sectional view of a proportional pressure reducing valve and a clutch pack showing an embodiment of the present invention, Fig. 2 is a graph showing the command current vs. output pressure characteristic of the proportional pressure reducing valve of Fig. FIG. 1 is a graph showing the response delay of the embodiment, and FIG. 4 is a graph showing a response example of the conventional example. In the figure, 1 is a proportional pressure reducing valve, 2 is a proportional solenoid,
3 is a valve part, 10 is a supply port, 11 is a drain port, 12 is an output port, 15 is a pipe, 16 is a clutch pack, 17 is a spool, 21 is a feedback chamber, 22 is a feedback passage, 23 is a choke throttle, 26 is a The accumulator 35 is a piston serving as an accumulator.
Claims (1)
ノイドを備えるとともに、一端側のフイードバツ
ク室に出力ポート側からフイードバツク通路を介
して帰還させた作動油の圧力及び他端側に作用さ
せた前記比例ソレノイドの推力に基づく押圧力の
釣り合いにより位置決めされるスプールと、この
スプールの位置により前記出力ポートとの連通具
合が制御される供給ポート及びドレンポートとを
有したバルブ部を備え、前記出力ポートには、該
出力ポートから出力される油圧に付勢され所望の
駆動を行うアクチユエータを含む負荷を接続する
ようにした圧力制御弁において、 前記フイードバツク通路に設けられ且つ該通路
を流通する作動油の粘度に応じた流動抵抗を有す
るチヨーク絞りと、前記フイードバツク室に連通
した位置に設けられ且つ該フイードバツク室の圧
力が大気圧からの立ち上がる際、該圧力上昇を遅
延させるアキユムレータとを具備したことを特徴
とする圧力制御弁。[Scope of Claim for Utility Model Registration] A proportional solenoid that generates a thrust proportional to the command current value is provided, and the pressure of hydraulic oil is returned from the output port side to the feedback chamber on one end side via the feedback passage, and on the other end side. A valve part having a spool whose position is determined by the balance of the pressing force based on the thrust of the proportional solenoid applied to the valve, and a supply port and a drain port whose communication with the output port is controlled by the position of the spool. The pressure control valve is provided with a load including an actuator that is energized by hydraulic pressure output from the output port and performs a desired drive, and is connected to the output port, the pressure control valve being provided in the feedback passage and connecting the passage with the pressure control valve. A choke throttle having a flow resistance according to the viscosity of the circulating hydraulic oil, and an accumulator provided in a position communicating with the feedback chamber and delaying the pressure increase when the pressure in the feedback chamber rises from atmospheric pressure. A pressure control valve characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12792088U JPH0250717U (en) | 1988-09-29 | 1988-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12792088U JPH0250717U (en) | 1988-09-29 | 1988-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0250717U true JPH0250717U (en) | 1990-04-10 |
Family
ID=31380786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12792088U Pending JPH0250717U (en) | 1988-09-29 | 1988-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0250717U (en) |
-
1988
- 1988-09-29 JP JP12792088U patent/JPH0250717U/ja active Pending
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