JPH0469286U - - Google Patents
Info
- Publication number
- JPH0469286U JPH0469286U JP11149690U JP11149690U JPH0469286U JP H0469286 U JPH0469286 U JP H0469286U JP 11149690 U JP11149690 U JP 11149690U JP 11149690 U JP11149690 U JP 11149690U JP H0469286 U JPH0469286 U JP H0469286U
- Authority
- JP
- Japan
- Prior art keywords
- reaction
- pressure
- diameter portion
- inlet side
- communicates
- 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
- 238000011144 upstream manufacturing Methods 0.000 claims 2
Landscapes
- Steering Control In Accordance With Driving Conditions (AREA)
Description
第１図は本考案の一実施例に係る反力圧制御弁
の断面図、第２図は第１図の要部を拡大して示す
要部拡大断面図、第３図は車輌速度における動力
舵取装置の供給油入口圧と反力圧との関係を示す
グラフ、第４図は本考案に係る反力圧制御弁と従
来の反力圧制御弁との油圧特性の比較を示すグラ
フ、第５図、第６図はそれぞれ従来の反力圧制御
弁を示す断面図である。
２８……室（供給油入口側）、５０……環状溝
（開口部）、６０……反力プランジヤ、６０ｂ…
…大径部、６１……連通孔、６３……環状溝（縮
径部）、６５……面取り部、６６……バイパス通
路、７０……第１の可変オリフイス、７１……第
２の可変オリフイス。
Fig. 1 is a sectional view of a reaction pressure control valve according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main part of Fig. 1, and Fig. 3 is a power at vehicle speed. A graph showing the relationship between the supply oil inlet pressure of the steering device and the reaction pressure; FIG. 4 is a graph showing a comparison of hydraulic characteristics between the reaction pressure control valve according to the present invention and a conventional reaction pressure control valve; FIGS. 5 and 6 are cross-sectional views showing conventional reaction pressure control valves, respectively. 28... Chamber (supplied oil inlet side), 50... Annular groove (opening), 60... Reaction force plunger, 60b...
... Large diameter part, 61 ... Communication hole, 63 ... Annular groove (reduced diameter part), 65 ... Chamfered part, 66 ... Bypass passage, 70 ... First variable orifice, 71 ... Second variable Orifice.
Claims (1)
を連通する流路に開口するとともに動力舵取装置
の供給油入口側に連通するバルブ孔を形成し、こ
のバルブ孔内に外面に縮径部を有しこれに連通す
る連通孔の穿設された反力プランジヤを摺動可能
に嵌合し、該縮径部と上記開口部とにより形成さ
れたオリフイス上流側の圧油を反力室に導入し、
動力舵取装置への供給油入口側の圧力に応じて該
反力プランジヤを進退動して圧油の一部を上記連
通孔を介してタンクへ還流させる反力圧制御弁に
おいて、上記反力プランジヤ外径部の上記縮径部
より供給油入口側に上記開口部と連通可能な面取
り部を形成し、この開口部と該面取り部とにより
形成された可変オリフイスを介して上記連通孔に
連通するバイパス通路を穿設し、上記供給油入口
側圧の増大時上記オリフイス上流側の圧油の一部
をタンクへ還流させることを特徴とする反力圧制
御弁。 A valve hole is formed that opens into a flow path that communicates the discharge port of the pump and the hydraulic reaction chamber of the power steering device, and also communicates with the supply oil inlet side of the power steering device, and a valve hole is formed in the valve hole that contracts on the outer surface. A reaction force plunger having a diameter portion and a communication hole communicating therewith is slidably fitted, and the pressure oil on the upstream side of the orifice formed by the reduced diameter portion and the opening is applied as a reaction force. introduced into the room,
The reaction pressure control valve moves the reaction plunger forward and backward in accordance with the pressure on the inlet side of oil supplied to the power steering device to return a part of the pressure oil to the tank via the communication hole. A chamfered portion that can communicate with the opening is formed on the supply oil inlet side of the reduced diameter portion of the outer diameter portion of the plunger, and communicates with the communication hole through a variable orifice formed by this opening and the chamfered portion. 1. A reaction pressure control valve, characterized in that a bypass passage is bored therein, and a part of the pressure oil on the upstream side of the orifice is returned to the tank when the supply oil inlet side pressure increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11149690U JP2547860Y2 (en) | 1990-10-24 | 1990-10-24 | Reaction pressure control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11149690U JP2547860Y2 (en) | 1990-10-24 | 1990-10-24 | Reaction pressure control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0469286U true JPH0469286U (en) | 1992-06-18 |
| JP2547860Y2 JP2547860Y2 (en) | 1997-09-17 |
Family
ID=31858958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11149690U Expired - Lifetime JP2547860Y2 (en) | 1990-10-24 | 1990-10-24 | Reaction pressure control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2547860Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230297299A1 (en) * | 2022-03-17 | 2023-09-21 | Xerox Corporation | Multi-function device communities for troubleshooting and maintenance |
-
1990
- 1990-10-24 JP JP11149690U patent/JP2547860Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230297299A1 (en) * | 2022-03-17 | 2023-09-21 | Xerox Corporation | Multi-function device communities for troubleshooting and maintenance |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2547860Y2 (en) | 1997-09-17 |
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