JPS60161673U

JPS60161673U - Steering regulation device in rear wheel steering system

Info

Publication number: JPS60161673U
Application number: JP5019584U
Authority: JP
Inventors: 加瀬川　憲道
Original assignee: トヨタ自動車株式会社
Priority date: 1984-04-04
Filing date: 1984-04-04
Publication date: 1985-10-26
Also published as: JPH037267Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は本考案の一実施例を示す概略構成図、・第２図
は第１図に示した油圧シリンダの拡大断面図、第３図は
両浮動ピストンが作動した状態の油″″−二＝Ｔ行奇＝
＝＝勃１．ヶＩＪ　７９　−機構、１３・・・連結ロッ
ド、２０・・・油圧シリンダ、　　　　　２１・・・シ
リンダ本体、２２−・・ピストン、６１．６２・・・浮
動ピストン、６３・・・第１開閉弁、６４・・・第２開
閉弁、６５．６６・・・ポート、７０・・・制御袋　。置、ＦＷ・・・前輪、ＲＷ・・・後輪、Ｒ１，Ｒ２・・
・主油室、Ｒ３，Ｒ４・・・副油室、Ｐ・・・油圧ポン
プ、Ｔ・・・リザーバタンク。　−Fig. 1 is a schematic configuration diagram showing an embodiment of the present invention, Fig. 2 is an enlarged cross-sectional view of the hydraulic cylinder shown in Fig. 1, and Fig. 3 is an oil pressure cylinder with both floating pistons in operation. 2 = T row odd =
==Erection1. IJ 79 - Mechanism, 13... Connecting rod, 20... Hydraulic cylinder, 21... Cylinder body, 22-... Piston, 61.62... Floating piston, 63... First on-off valve , 64...Second on-off valve, 65.66...Port, 70...Control bag. position, FW...front wheel, RW...rear wheel, R1, R2...
・Main oil chamber, R3, R4...auxiliary oil chamber, P...hydraulic pump, T...reservoir tank. −

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

前輪の操舵状態に応じて制御され直進状態においてピス
トンがシリンダ本俸の略中央に位置する複動杉油圧シリ
ンダにより後輪用ステアリングリンク機構を作動させて
、後輪を前記前輪の操舵操作に連動して操舵するように
した前後輪操舵車において、前記シリンダ本体内の前記
ピストン両側にそれぞれ浮動ピストデを軸方向へ摺動可
能かつ液密的に配設して同浮動ピストンと前記シリンダ
本体により一対の副油室を形成し、これら両副油、　室
を第１開閉弁を介して油圧源に接続するとともに、゛前
記ピストンが前記シリンダ本体の略中央に□　　　位置
したとき同ピストンの両側近傍にて前記ピストンの両側
に形成仝れる各主油室にそれぞれ開口するポートを前記
シリンダ本体の中央部にそれぞれ形成し、これら両ポー
トを第２開閉弁を介してリザーバタンクに接続して、後
輪舵角が前記前輪の操舵操作に適正に連動しないとき前
記両開閉弁を開としかつ後輪舵角が前部前輪の操舵操作
に適正に連動するとき前記両開閉弁を閉とする制御装置
により前記開閉弁の作動を制御するようにした後輪の操
舵規制装置。The rear wheel steering link mechanism is operated by a double-acting cedar hydraulic cylinder that is controlled according to the steering state of the front wheels and whose piston is located approximately at the center of the cylinder main body in the straight-ahead state, and the rear wheels are linked to the steering operation of the front wheels. In a front and rear wheel steered vehicle, a floating piston is disposed on both sides of the piston in the cylinder body so as to be able to slide in the axial direction and in a fluid-tight manner, and the floating piston and the cylinder body form a pair of floating pistons. A sub-oil chamber is formed, and both of these sub-oil chambers are connected to a hydraulic power source via a first on-off valve. Ports that open into the main oil chambers formed on both sides of the piston are formed in the center of the cylinder body, and both ports are connected to a reservoir tank via a second on-off valve to connect the rear wheel steering. The control device opens both of the on-off valves when the steering angle of the rear wheels is not appropriately linked to the steering operation of the front wheels, and closes both of the on-off valves when the rear wheel steering angle is appropriately linked to the steering operation of the front wheels. A rear wheel steering control device that controls the operation of the on-off valve.