JPH0324478U

JPH0324478U -

Info

Publication number: JPH0324478U
Application number: JP8259089U
Authority: JP
Priority date: 1989-07-13
Filing date: 1989-07-13
Publication date: 1991-03-13
Anticipated expiration: 2004-07-13
Also published as: JP2506291Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る後輪操舵装置
内に設けたレバーの揺動中心の調整機構部を示す
拡大断面図、第２図は第１図の−線に沿つて
見た端面図、第３図は前記後輪操舵装置を備えた
前後輪操舵車の全体概略図、第４図は前記後輪操
舵装置の縦断面図、第５図は第４図の−線に
沿つて見た断面図、第６図は第４図のバルブスプ
ールと連結シヤフトの連結機構部を示す拡大平面
図である。符号の説明、Ａ……前輪操舵装置、Ｂ……後輪
操舵装置、ＦＷ１，ＦＷ２……前輪、ＲＷ１，Ｒ
Ｗ２……後輪、１１……ラツクバー、１４……操
舵ハンドル、３１……リレーロツド、３２，４１
……ハウジング、３５……パワーシリンダ、４２
……スプールバルブ、４３……レバー、４４……
ピン、４４ａ……ねじ部、４４ｂ……突起部、４
４ｃ……半月部、４４ｃ１，４４ｃ２……張出部
、５１，５２……ねじピン、５７……連結ロツド
、５８……カムプレート、７１，７２……ケーブ
ル。 FIG. 1 is an enlarged sectional view showing a mechanism for adjusting the center of swing of a lever provided in a rear wheel steering device according to an embodiment of the present invention, and FIG. 2 is a view taken along the - line in FIG. 1. 3 is an overall schematic diagram of a front and rear wheel steered vehicle equipped with the rear wheel steering device, FIG. 4 is a longitudinal sectional view of the rear wheel steering device, and FIG. 5 is a view taken along the line - in FIG. 4. FIG. 6 is an enlarged plan view showing the connection mechanism between the valve spool and the connection shaft shown in FIG. 4. Explanation of symbols, A...Front wheel steering device, B...Rear wheel steering device, FW1, FW2...Front wheel, RW1, R
W2... Rear wheel, 11... Rack bar, 14... Steering handle, 31... Relay rod, 32, 41
...Housing, 35 ...Power cylinder, 42
...Spool valve, 43...Lever, 44...
Pin, 44a...Threaded part, 44b...Protrusion, 4
4c... Half moon part, 44c1, 44c2... Overhanging part, 51, 52... Screw pin, 57... Connection rod, 58... Cam plate, 71, 72... Cable.

Claims

[Scope of utility model registration request]

a relay rod that is supported by the housing so as to be displaceable in the axial direction and that connects each rear wheel at both ends so as to be steerable, and that steers the rear wheels in accordance with the displacement in the axial direction; A power cylinder that drives the relay rod in the axial direction in response to supply and discharge, and first and second valve members that are respectively displaceably assembled to the housing. a copying valve that controls the supply and discharge of hydraulic oil to and from the relay rod;
a lever that is engaged with the valve member at different points from the fulcrum and swings about the fulcrum in response to displacement of the relay rod and the second valve member; and a pin that extends perpendicularly and is screwed to the lever and rotatably supports the lever at the fulcrum, and drives and controls the first valve member of the copying valve to steer the rear wheels by hydraulic copying action. In the rear wheel steering device for a front and rear wheel steered vehicle, a protrusion is provided on the tip end surface of the pin and is eccentric with respect to the axis of the pin and rotatably supports the lever at the fulcrum, and
The front and rear parts are characterized in that an integral projecting portion is provided on both sides of the outer circumferential surface of the intermediate portion of the pin, and a pair of screws are screwed into the housing such that their tips abut against both the projecting portions, respectively. Rear wheel steering device for wheel steering vehicles.