JPH0455470U

JPH0455470U -

Info

Publication number: JPH0455470U
Application number: JP9838990U
Authority: JP
Priority date: 1990-09-19
Filing date: 1990-09-19
Publication date: 1992-05-12

Description

[Brief explanation of the drawing]

第１図は本考案に係る四輪操舵用後輪アクチユ
エータを適用した四輪操舵車の概略構成図、第２
図は第１図の矢線−に沿う断面図、第３図は
第２図の要部拡大斜視図、第４図は第１図のリン
ク機構の作動を示す図、第５図は第１図のシリン
ダ軸とリレーロツドのストロークとの関係を示す
特性図、第６図は従来の四輪操舵車の概略構成図
、第７図は第６図の油圧切換弁の特性図、第８図
は第６図のハンドル角とハンドル負荷との関係を
示す特性図である。１……前輪、２……後輪、３……パワーステア
リング装置、４……パワーシリンダ、５……油圧
切換弁、２０……後輪用アクチユエータ、２１…
…パワーシリンダ、２２……リンク機構、２４…
…リレーロツド、２５……スライドベアリング、
２６，２７……リンク、２８……円板。 Figure 1 is a schematic configuration diagram of a four-wheel steering vehicle to which the rear wheel actuator for four-wheel steering according to the present invention is applied;
The figure is a sectional view taken along the arrow line - in Figure 1, Figure 3 is an enlarged perspective view of the main part of Figure 2, Figure 4 is a diagram showing the operation of the link mechanism in Figure 1, and Figure 5 is a diagram showing the operation of the link mechanism in Figure 1. Figure 6 is a diagram showing the relationship between the cylinder axis and the stroke of the relay rod, Figure 6 is a schematic configuration diagram of a conventional four-wheel steering vehicle, Figure 7 is a diagram showing the characteristics of the hydraulic switching valve in Figure 6, Figure 8 is 7 is a characteristic diagram showing the relationship between the steering wheel angle and the steering wheel load shown in FIG. 6. FIG. DESCRIPTION OF SYMBOLS 1... Front wheel, 2... Rear wheel, 3... Power steering device, 4... Power cylinder, 5... Hydraulic switching valve, 20... Rear wheel actuator, 21...
...Power cylinder, 22...Link mechanism, 24...
...Relay rod, 25...Slide bearing,
26, 27...link, 28...disk.

Claims

[Scope of utility model registration request]

a first power cylinder that applies a steering angle to the rear wheels; a second power cylinder that is attached to one side of the cylinder shaft of the first power cylinder and has a smaller diameter than the first power cylinder; a relay rod that is connected to a rear wheel and provides a steering angle to the rear wheel;
a first link disposed orthogonally to the relay rod, a base end rotatable to the vehicle body, and connected at an appropriate point to one end of the cylinder shaft; a second link connected near the tip of the first link; a disc rotatably supported on the vehicle body and slidably supporting the second link in the axial direction at both diametrical ends; interposed between the relay rod and the second link;
A rear wheel actuator for four-wheel steering, comprising: a slide bearing that pushes a relay rod according to rotation of a link of the rear wheel actuator.