JPH0439171U - - Google Patents
Info
- Publication number
- JPH0439171U JPH0439171U JP8194190U JP8194190U JPH0439171U JP H0439171 U JPH0439171 U JP H0439171U JP 8194190 U JP8194190 U JP 8194190U JP 8194190 U JP8194190 U JP 8194190U JP H0439171 U JPH0439171 U JP H0439171U
- Authority
- JP
- Japan
- Prior art keywords
- control valve
- hydraulic control
- valve
- bypass
- vehicle speed
- 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 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Steering Control In Accordance With Driving Conditions (AREA)
Description
第１図は本案装置の全体構成を示す模式図、第
２図は油圧制御弁及びバイパス弁の構成例を示す
縦断面図、第３図は油圧制御弁の要部拡大横断面
図、第４図は第３図の油圧制御弁の採用により得
られる操舵補助力の増加特性を示すグラフ、第５
図は本案装置における操舵補助力の増加特性を示
すグラフ、第６図は従来の油圧制御弁への送給油
量を加減する構成とした従来の動力舵取装置にお
ける操舵補助力の増加特性を示すグラフである。
１……舵輪、２……油圧制御弁、３……バイパ
ス弁、７……切欠部、２０……弁体、２１……ケ
ーシング、３０……比例ソレノイド、３１……車
速センサ、３２……制御部、３４……ケーシング
、３５……スプール、３８，３９……制御溝、Ｐ
……油圧ポンプ、Ｓ……油圧シリンダ、Ｔ……油
タンク。
Fig. 1 is a schematic diagram showing the overall configuration of the proposed device, Fig. 2 is a vertical sectional view showing an example of the configuration of the hydraulic control valve and bypass valve, Fig. 3 is an enlarged cross-sectional view of the main part of the hydraulic control valve, and Fig. 4 The figure is a graph showing the increasing characteristics of the steering assist force obtained by employing the hydraulic control valve shown in Fig. 3.
The figure is a graph showing the increasing characteristics of the steering assisting force in the proposed device. Figure 6 shows the increasing characteristic of the steering assisting force in a conventional power steering device configured to adjust the amount of oil supplied to the conventional hydraulic control valve. It is a graph. DESCRIPTION OF SYMBOLS 1... Steering wheel, 2... Hydraulic control valve, 3... Bypass valve, 7... Notch, 20... Valve body, 21... Casing, 30... Proportional solenoid, 31... Vehicle speed sensor, 32... Control part, 34...Casing, 35...Spool, 38, 39...Control groove, P
...Hydraulic pump, S...Hydraulic cylinder, T...Oil tank.
Claims (1)
に生じる相対変位により両者間に介在する絞り部
の開度を変化させ、操舵補助用の油圧アクチユエ
ータへの送給油圧を制御する油圧制御弁と、車速
の検出結果に基づいて開閉され前記油圧制御弁へ
の送給油の一部をバイパスするバイパス弁とを備
え、該バイパス弁によるバイパス油量を車速の高
低に応じて増減し、低速時に大きく、高速時に小
さい操舵補助力を得るようになした動力舵取装置
において、 前記油圧制御弁の絞り部は、前記相対変位に対
し、３通りに異なる開度変化率を示すようになし
てあることを特徴とする動力舵取装置。[Scope of Claim for Utility Model Registration] The relative displacement that occurs between the valve body and the casing in response to the operation of the steering wheel changes the opening degree of the throttle section interposed between the two, and supplies power to a hydraulic actuator for steering assistance. A hydraulic control valve that controls hydraulic pressure, and a bypass valve that is opened and closed based on the detection result of vehicle speed and bypasses a part of the oil supplied to the hydraulic control valve, and the amount of bypass oil by the bypass valve is adjusted to high or low vehicle speed. In the power steering device, the throttle portion of the hydraulic control valve has three different opening change rates with respect to the relative displacement. A power steering device characterized in that it is configured as shown in FIG.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8194190U JPH0439171U (en) | 1990-07-31 | 1990-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8194190U JPH0439171U (en) | 1990-07-31 | 1990-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0439171U true JPH0439171U (en) | 1992-04-02 |
Family
ID=31628318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8194190U Pending JPH0439171U (en) | 1990-07-31 | 1990-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0439171U (en) |
-
1990
- 1990-07-31 JP JP8194190U patent/JPH0439171U/ja active Pending