JPH0352281U - - Google Patents
Info
- Publication number
- JPH0352281U JPH0352281U JP11460989U JP11460989U JPH0352281U JP H0352281 U JPH0352281 U JP H0352281U JP 11460989 U JP11460989 U JP 11460989U JP 11460989 U JP11460989 U JP 11460989U JP H0352281 U JPH0352281 U JP H0352281U
- Authority
- JP
- Japan
- Prior art keywords
- control valve
- power cylinder
- oil
- discharge amount
- 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
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Steering Control In Accordance With Driving Conditions (AREA)
Description
第１図は本考案の一実施例としてのパワーステ
アリング用油量制御装置の要部構成図、第２図は
同上装置の吐出流量−ポンプ回転数特性線図、第
３図は従来のパワーステアリング用油量制御装置
が取付けられた油圧回路図、第４図は第３図の装
置の出力油圧−操舵力特性線図、第５図は第３図
の装置の吐出圧−ポンプ回転数特性線図をそれぞ
れ示している。
１……ラツク、２……ピニオン、４，５……パ
ワーシリンダ、８……油圧ポンプ、９……吐出量
制御弁、３２……流量制御弁、３３……吸込ポー
ト、３４……スプール弁、４２……摺動穴、４３
……貫通穴、４４……可変オリフイス、Ｐ１……
吐出圧、Ｐ２……出力油圧、Ｐ３……吸込ポート
圧、Ｑ……吐出油量、Ｎ……ポンプ回転数、Ａ…
…油圧回路摺動穴４２。
Fig. 1 is a diagram showing the main parts of a power steering oil flow control device as an embodiment of the present invention, Fig. 2 is a discharge flow rate-pump rotation speed characteristic diagram of the same device, and Fig. 3 is a diagram of a conventional power steering system. A hydraulic circuit diagram in which the oil quantity control device is installed, Fig. 4 is an output oil pressure-steering force characteristic line of the device shown in Fig. 3, and Fig. 5 is a discharge pressure-pump rotation speed characteristic line of the device shown in Fig. 3. Figures are shown respectively. 1... Rack, 2... Pinion, 4, 5... Power cylinder, 8... Hydraulic pump, 9... Discharge amount control valve, 32... Flow rate control valve, 33... Suction port, 34... Spool valve , 42...Sliding hole, 43
...Through hole, 44...Variable orifice, P1...
Discharge pressure, P2...Output oil pressure, P3...Suction port pressure, Q...Discharge oil amount, N...Pump rotation speed, A...
...Hydraulic circuit sliding hole 42.
Claims (1)
シリンダに油圧回路が接続され、かつ、上記油圧
回路内の油圧ポンプからのオイルが吐出量制御弁
で受けられると共にそのオイルの吐出量が所定値
以内に保たれて上記パワーシリンダ側に吐出され
るように構成されたパワーステアリング用油量制
御装置において、上記吐出量制御弁と上記パワー
シリンダとの間に流量制御弁が介装され、上記流
量制御弁の弁体は上記パワーシリンダ側に加わる
出力油圧と上記油圧回路内の不変動油圧との差圧
に応じて摺動穴内を摺動可能なスプール弁として
形成され、上記スプール弁に形成された貫通路の
開口と上記流量制御弁の吸込ポートとで可変オリ
フイスが構成され、上記可変オリフイスが上記オ
イル吐出量を増減調整することを特徴とするパワ
ーステアリング用流量制御装置。 A hydraulic circuit is connected to a power cylinder that assists the steering operation of the steering gear, and oil from a hydraulic pump in the hydraulic circuit is received by a discharge amount control valve, and the discharge amount of the oil is maintained within a predetermined value. In the power steering oil amount control device configured to discharge oil to the power cylinder side, a flow rate control valve is interposed between the discharge amount control valve and the power cylinder, and a valve of the flow rate control valve is disposed between the discharge amount control valve and the power cylinder. The body is formed as a spool valve that can slide within a sliding hole according to the differential pressure between the output hydraulic pressure applied to the power cylinder side and the constant hydraulic pressure in the hydraulic circuit, and the body is formed as a spool valve that can slide within a sliding hole according to the differential pressure between the output hydraulic pressure applied to the power cylinder side and the constant hydraulic pressure in the hydraulic circuit. A flow control device for power steering, characterized in that a variable orifice is constituted by an opening and a suction port of the flow control valve, and the variable orifice increases or decreases the amount of oil discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11460989U JPH0352281U (en) | 1989-09-29 | 1989-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11460989U JPH0352281U (en) | 1989-09-29 | 1989-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0352281U true JPH0352281U (en) | 1991-05-21 |
Family
ID=31662971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11460989U Pending JPH0352281U (en) | 1989-09-29 | 1989-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0352281U (en) |
-
1989
- 1989-09-29 JP JP11460989U patent/JPH0352281U/ja active Pending
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