JPH031889U - - Google Patents
Info
- Publication number
- JPH031889U JPH031889U JP6233289U JP6233289U JPH031889U JP H031889 U JPH031889 U JP H031889U JP 6233289 U JP6233289 U JP 6233289U JP 6233289 U JP6233289 U JP 6233289U JP H031889 U JPH031889 U JP H031889U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- valve
- valve chamber
- power
- valve body
- 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
- 239000012530 fluid Substances 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Power Steering Mechanism (AREA)
Description
添付図面は本考案による動力舵取り装置の一実
施例を示し、第１図は全体の縦断面図、第２図は
第１図の−線に沿つた拡大断面図、第３図は
サーボ弁の横断面図、第４図は操舵トルクに対す
るアシスト力の特性図である。
符号の説明、２０…パワーシリンダ、２１…シ
リンダ部、２２…ピストン、２３ａ，２３ｂ…シ
リンダ室、２５…供給ポンプ、３０…サーボ弁、
５０…弁室、５１ａ，５１ｂ…連通孔、５２…弁
体、５３…突起部、５４…連通路、５６…スプリ
ング。
The accompanying drawings show an embodiment of the power steering device according to the present invention, in which Fig. 1 is a longitudinal cross-sectional view of the whole, Fig. 2 is an enlarged sectional view taken along the - line in Fig. 1, and Fig. 3 is a view of a servo valve. The cross-sectional view, FIG. 4, is a characteristic diagram of assist force with respect to steering torque. Explanation of symbols, 20... Power cylinder, 21... Cylinder part, 22... Piston, 23a, 23b... Cylinder chamber, 25... Supply pump, 30... Servo valve,
50...Valve chamber, 51a, 51b...Communication hole, 52...Valve body, 53...Protrusion, 54...Communication path, 56...Spring.
Claims (1)
離するピストンよりなり車輪を操向するアシスト
力を与えるパワーシリンダと、操舵ハンドルから
の操舵トルクに応じて作動し供給ポンプから前記
両シリンダ室に供給される作動流体の給排を制御
して前記パワーシリンダを作動させるサーボ弁を
備えてなる動力舵取り装置において、前記ピスト
ン内に形成された円筒状の弁室と、この弁室と同
軸的に前記ピストン内に形成され同弁室の両端部
をそれぞれ前記各シリンダ室に連通する一対の連
通孔と、前記弁室内に軸線方向に移動自在に設け
られて同弁室内を２つの作動室に分離する弁体と
、この弁体に一体的に形成されて軸線方向両外方
に突出し同弁体の軸線方向移動によりそれぞれ前
記各連通孔と前記弁室の間の連通を選択的に閉止
する一対の突起部と、前記弁体を前記各突起部が
いずれも前記各連通孔を閉止しない中立位置に弾
性的に保持するスプリングと、前記弁体両側の両
作動室を連通する連通路を備えたことを特徴とす
る動力舵取り装置。 A power cylinder consists of a piston that separates the cylinder part and its interior into two cylinder chambers, and provides an assist force for steering the wheels.The power cylinder operates in response to steering torque from the steering wheel and is supplied to both cylinder chambers from a supply pump. In the power steering device, the power steering device includes a servo valve that operates the power cylinder by controlling the supply and discharge of working fluid. a pair of communication holes formed within the valve chamber and communicating both ends of the valve chamber with the respective cylinder chambers, and a valve provided movably in the axial direction within the valve chamber and separating the valve chamber into two working chambers. a pair of protrusions that are integrally formed with the valve body and protrude outward in the axial direction to selectively close the communication between the respective communication holes and the valve chamber as the valve body moves in the axial direction; a spring that elastically holds the valve body in a neutral position in which neither of the protrusions closes the communication holes; and a communication passage that communicates between the working chambers on both sides of the valve body. Features a power steering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6233289U JPH031889U (en) | 1989-05-29 | 1989-05-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6233289U JPH031889U (en) | 1989-05-29 | 1989-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH031889U true JPH031889U (en) | 1991-01-10 |
Family
ID=31591381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6233289U Pending JPH031889U (en) | 1989-05-29 | 1989-05-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH031889U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003010145A (en) * | 2001-06-29 | 2003-01-14 | Ya Man Ltd | Low-frequency pulse device |
-
1989
- 1989-05-29 JP JP6233289U patent/JPH031889U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003010145A (en) * | 2001-06-29 | 2003-01-14 | Ya Man Ltd | Low-frequency pulse device |