JPS6225267U - - Google Patents

Info

Publication number
JPS6225267U
JPS6225267U JP1985116445U JP11644585U JPS6225267U JP S6225267 U JPS6225267 U JP S6225267U JP 1985116445 U JP1985116445 U JP 1985116445U JP 11644585 U JP11644585 U JP 11644585U JP S6225267 U JPS6225267 U JP S6225267U
Authority
JP
Japan
Prior art keywords
pressure
oil
oil passage
reaction piston
output shaft
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
Application number
JP1985116445U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1985116445U priority Critical patent/JPS6225267U/ja
Priority to GB08617473A priority patent/GB2179900B/en
Priority to US06/888,436 priority patent/US4787469A/en
Priority to FR8610881A priority patent/FR2585660B1/en
Priority to DE19863625600 priority patent/DE3625600A1/en
Priority to KR1019860006299A priority patent/KR920002738B1/en
Publication of JPS6225267U publication Critical patent/JPS6225267U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本考案に係わるパワーステアリング装
置の一実施例の油圧回路図、第2図は油路切換弁
及び圧力制御バルブ部分の縦断一側面図、第3図
は同油路切換弁及び圧力制御バルブ部分の停車時
における縦断他側面図、第4図は同油路切換弁及
び圧力制御バルブ部分の走行時における縦断他側
面図、第5図は同圧力制御バルブ及び圧力ピスト
ン部分の横断平面図、第6図はインポートフイル
タの第7図矢視―線に沿う横断平面図、第7
図は同インポートフイルタの側面図、第8図は同
インポートフイルタの拡大斜視図、第9図は制御
ランドに設けたチヤンフアの縦断側面図、第10
図はインポート側オリフイスの一例を示す横断平
面図、第11図は同インポート側オリフイスの他
の例を示す横断平面図、第12図はリターン側オ
リフイスの各例を示す縦断側面図、第13図は同
リターン側オリフイスのさらに他の例を示す縦断
側面図、第14図は圧力制御バルブの差圧部の他
の例を示す縦断側面図、第15図は制御装置の系
統図、第16図は制御ランドに設けたチヤンフア
の角度により変わる油圧―入力特性説明図、第1
7図はインポートオリフイスの孔径により変わる
油圧―入力特性説明図、第18図は圧力制御バル
ブ上流側制御油路の油圧と圧力制御バルブ下流側
制御油路の油圧との関係を示す説明図、第19図
はソレノイドのプランジヤのストロークと軸力と
の関係を示す説明図、第20図は車速とソレノイ
ド電流との関係を示す説明図、第21図は入力ト
ルク―オイルポンプ吐出圧特性を示す説明図であ
る。 1…オイルポンプ、2…油路切換弁、2a…ス
テアリングホイール、3…パワーシリンダ、4…
オイルタンク、5…反力ピストン、7a…高圧油
路、7b,7c,7d,7e…制御油路、8a,
8b…低圧油路、11…圧力制御バルブ、12…
ソレノイド、13…リターン側オリフイス、20
a…ハルブハウジング、21…入力軸、22…ト
ーシヨンバー、24a…出力軸、42′または4
2″…インポート側オリフイス。
Fig. 1 is a hydraulic circuit diagram of an embodiment of the power steering device according to the present invention, Fig. 2 is a longitudinal cross-sectional side view of the oil passage switching valve and pressure control valve portion, and Fig. 3 is the oil passage switching valve and pressure control valve. Fig. 4 is a vertical sectional side view of the control valve section when the control valve is stopped, Fig. 4 is a longitudinal sectional side view of the oil passage switching valve and pressure control valve section when the valve is running, and Fig. 5 is a cross-sectional plane of the pressure control valve and pressure piston section. Figure 6 is a cross-sectional plan view of the import filter taken along the line shown in Figure 7.
The figure is a side view of the same import filter, Figure 8 is an enlarged perspective view of the same import filter, Figure 9 is a vertical side view of the channel provided on the control land, and Figure 10 is
The figure is a cross-sectional plan view showing an example of the import-side orifice, FIG. 11 is a cross-sectional plan view showing other examples of the same import-side orifice, FIG. 12 is a vertical cross-sectional side view showing each example of the return-side orifice, and FIG. 13 14 is a longitudinal side view showing another example of the return side orifice, FIG. 14 is a longitudinal side view showing another example of the differential pressure section of the pressure control valve, FIG. 15 is a system diagram of the control device, and FIG. 16 is an explanatory diagram of hydraulic pressure that changes depending on the angle of the channel installed on the control land - input characteristics, Part 1
Figure 7 is an explanatory diagram of oil pressure-input characteristics that vary depending on the hole diameter of the import orifice. Figure 19 is an explanatory diagram showing the relationship between the solenoid plunger stroke and axial force, Figure 20 is an explanatory diagram showing the relationship between vehicle speed and solenoid current, and Figure 21 is an explanatory diagram showing the input torque-oil pump discharge pressure characteristic. It is a diagram. 1... Oil pump, 2... Oil passage switching valve, 2a... Steering wheel, 3... Power cylinder, 4...
Oil tank, 5... Reaction piston, 7a... High pressure oil path, 7b, 7c, 7d, 7e... Control oil path, 8a,
8b...Low pressure oil path, 11...Pressure control valve, 12...
Solenoid, 13...Return side orifice, 20
a...Hulb housing, 21...Input shaft, 22...Torsion bar, 24a...Output shaft, 42' or 4
2″…Import side orifice.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ステアリングホイールに連結された入力軸と、
同入力軸の回転を出力軸に伝えるトーシヨンバー
と、同出力軸に連結されたパワーシリンダと、上
記入力軸と上記出力軸との回転角度差に応じて上
記パワーシリンダへの油路を切換える油路切換弁
と、オイルポンプから吐出される作動油を上記油
路切換弁を介して上記パワーシリンダへ供給する
高圧油路と、上記パワーシリンダから上記油路切
換弁を介してオイルタンクへ作動油を戻す低圧油
路と、上記入力軸と上記出力軸との間で規制力を
付与して同各軸の回転角度差を制限する反力ピス
トンと、上記高圧油路の途中から上記反力ピスト
ンへ延びた制御油路と、上記反力ピストンへ延び
た上記制御油路の油圧を所定の最高圧以下に制御
する圧力制御バルブと、同圧力制御バルブと上記
反力ピストンとの間の上記制御油路を上記低圧油
路に連通させるリターン側オリフイスと、車速に
応じて変わり且つ車速毎に略一定の軸力を発生す
るプランジヤを介して上記圧力制御バルブを作動
させるソレノイドとを具えているパワーステアリ
ング装置において、前記高圧油路から分かれた前
記制御油路の入口またはその付近にインポート側
オリフイスを設けたことを特徴とするパワーステ
アリング装置。
an input shaft connected to the steering wheel;
A torsion bar that transmits the rotation of the input shaft to the output shaft, a power cylinder connected to the output shaft, and an oil path that switches the oil path to the power cylinder according to the rotation angle difference between the input shaft and the output shaft. a switching valve; a high-pressure oil passage that supplies hydraulic oil discharged from the oil pump to the power cylinder via the oil passage switching valve; and a high-pressure oil passage that supplies hydraulic oil from the power cylinder to the oil tank via the oil passage switching valve. A low-pressure oil path to return, a reaction piston that applies a regulating force between the input shaft and the output shaft to limit the difference in rotation angle of each shaft, and a reaction piston from the middle of the high-pressure oil path to the reaction piston. an extended control oil passage; a pressure control valve that controls the oil pressure of the control oil passage extending to the reaction piston to a predetermined maximum pressure or less; and the control oil between the pressure control valve and the reaction piston. A power steering system comprising: a return-side orifice that communicates a passage with the low-pressure oil passage; and a solenoid that operates the pressure control valve via a plunger that generates an axial force that changes depending on vehicle speed and is approximately constant at each vehicle speed. A power steering device, characterized in that an import-side orifice is provided at or near an entrance of the control oil passage separated from the high-pressure oil passage.
JP1985116445U 1985-07-31 1985-07-31 Pending JPS6225267U (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP1985116445U JPS6225267U (en) 1985-07-31 1985-07-31
GB08617473A GB2179900B (en) 1985-07-31 1986-07-17 Power steering system
US06/888,436 US4787469A (en) 1985-07-31 1986-07-23 Power steering system
FR8610881A FR2585660B1 (en) 1985-07-31 1986-07-28 POWER STEERING SYSTEM FOR MOTOR VEHICLE
DE19863625600 DE3625600A1 (en) 1985-07-31 1986-07-29 SERVOLINE SYSTEM
KR1019860006299A KR920002738B1 (en) 1985-07-31 1986-07-31 Power steering system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985116445U JPS6225267U (en) 1985-07-31 1985-07-31

Publications (1)

Publication Number Publication Date
JPS6225267U true JPS6225267U (en) 1987-02-16

Family

ID=31001039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985116445U Pending JPS6225267U (en) 1985-07-31 1985-07-31

Country Status (1)

Country Link
JP (1) JPS6225267U (en)

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