JPH0170685U

JPH0170685U -

Info

Publication number: JPH0170685U
Application number: JP1987166552U
Authority: JP
Priority date: 1987-10-30
Filing date: 1987-10-30
Publication date: 1989-05-11

Description

[Brief explanation of the drawing]

第１図は本考案に係る四輪操舵車全体の操舵系
構成を示す概略構成図、第２図および第３図は本
考案を特徴づける転舵力伝達解除機構の一実施例
を示す要部断面図およびその―線断面図、第
４図および第５図はその解除状態を説明するため
の概略説明図、第６図は後輪転舵比可変機構の概
略断面図、第７図および第８図はその側面図およ
び底面図、第９図はそのセンタリングスプリング
機構を示す概略断面図、第１０図は本考案の別の
実施例を示す概略断面図である。１……前輪、４……前輪側ステアリング装置（
前輪側舵取り装置）、５……後輪、６……後輪側
舵取りリンク機構（後輪側舵取り装置）、７……
後輪側油圧式動力舵取装置、８……転舵力伝達ロ
ツド系、８ａ，８ｂ……前輪側および後輪側ロツ
ド、９ａ，９ｂ……伝達ロツド、１０……後輪転
舵装置、１１……後輪転舵比可変機構、１２……
ブラケツト、１３……回動本体、１４……入力ア
ーム、１５……出力レバー、１６……電動モータ
、２０……回転伝達系、２６ａ，２６ｂ……コン
トローラ、２８……車速センサ、２９ａ……操舵
角センサ、２９ｂ……後輪転舵比検出センサ、３
０……センタリングスプリング機構、３７……セ
ンタリングスプリング、５０……転舵力伝達解除
機構、５１……溝、５２……ボール、５３……
ピストン、５４……スリーブ本体。 FIG. 1 is a schematic configuration diagram showing the entire steering system configuration of a four-wheel steering vehicle according to the present invention, and FIGS. 2 and 3 are main parts showing an embodiment of the steering force transmission release mechanism that characterizes the present invention. 4 and 5 are schematic explanatory diagrams for explaining the released state, FIG. 6 is a schematic sectional view of the variable rear wheel steering ratio mechanism, and FIGS. 7 and 8. The figures are a side view and a bottom view, FIG. 9 is a schematic sectional view showing the centering spring mechanism, and FIG. 10 is a schematic sectional view showing another embodiment of the present invention. 1...Front wheel, 4...Front wheel side steering device (
front wheel side steering device), 5... rear wheel, 6... rear wheel side steering link mechanism (rear wheel side steering device), 7...
Rear wheel side hydraulic power steering device, 8...Steering force transmission rod system, 8a, 8b...Front wheel side and rear wheel side rods, 9a, 9b...Transmission rod, 10...Rear wheel steering device, 11 ...Rear wheel steering ratio variable mechanism, 12...
Bracket, 13...Rotating body, 14...Input arm, 15...Output lever, 16...Electric motor, 20...Rotation transmission system, 26a, 26b...Controller, 28...Vehicle speed sensor, 29a... Steering angle sensor, 29b... Rear wheel steering ratio detection sensor, 3
0... Centering spring mechanism, 37... Centering spring, 50... Steering force transmission release mechanism, 51... Groove, 52... Ball, 53...
Piston, 54...Sleeve body.

Claims

[Scope of utility model registration request]

The steering force transmission rod system is connected to a part of the steering device on the front wheel side and transmits the steering operation on the front wheel side to the steering device on the rear wheel side. 1. A rear wheel steering device for a four-wheel steered vehicle, characterized in that a steering force transmission release mechanism is provided in the front wheel section so that the front wheels can be steered by separating them from the rear wheels.