JPH02115074U

JPH02115074U -

Info

Publication number: JPH02115074U
Application number: JP2414389U
Authority: JP
Priority date: 1989-03-02
Filing date: 1989-03-02
Publication date: 1990-09-14

Description

[Brief explanation of the drawing]

第１図、第２図は本考案の第１の実施例を示し
、第１図は概略構成図、第２図は油圧系統図、第
３図は第２の実施例を示す概略構成図、第４図は
従来例を示す概略構成図である。１……ステアリングハンドル、３……ステアリ
ングギヤ、４……ピツトマンアーム、５……前輪
側中間ロツド、６……後輪側中間ロツド、７……
前輪側揺動リンク、９……前輪ステアバルブ、１
０……前輪側ベルクランク、１１……前輪側ドラ
ツグリンク、１３Ａ，１３Ｂ……前輪ステアシリ
ンダ、１５Ａ，１５Ｂ……サイドロツド、１６Ａ
，１６Ｂ……ナツクルアーム、１７Ａ，１７Ｂ…
…前輪、２７……後輪側揺動リンク、２９……後
輪ステアバルブ、３０……後輪側ベルクランク、
３１……後輪側ドラツグリンク、３３Ａ，３３Ｂ
……後輪ステアシリンダ、３５Ａ，３５Ｂ……サ
イドロツド、３６Ａ，３６Ｂ……ナツクルアーム
、３７Ａ，３７Ｂ……後輪、６１……前輪ステア
バルブ、６１ａ……ピツトマンアーム、６２……
伝動手段、６３……後輪ステアバルブ、６３ａ…
…ピツトマンアーム、６４……前輪側ドラツグリ
ンク、６５……後輪側ドラツグリンク、７９……
ステアシリンダ、８０……ステアシリンダ。 1 and 2 show a first embodiment of the present invention, FIG. 1 is a schematic configuration diagram, FIG. 2 is a hydraulic system diagram, and FIG. 3 is a schematic configuration diagram showing a second embodiment. FIG. 4 is a schematic configuration diagram showing a conventional example. 1... Steering handle, 3... Steering gear, 4... Pitman arm, 5... Front wheel side intermediate rod, 6... Rear wheel side intermediate rod, 7...
Front wheel side swing link, 9...Front wheel steer valve, 1
0...Front wheel side bell crank, 11...Front wheel side drag link, 13A, 13B...Front wheel steer cylinder, 15A, 15B...Side rod, 16A
, 16B...Natsukuru arm, 17A, 17B...
...Front wheel, 27...Rear wheel side swing link, 29...Rear wheel steer valve, 30...Rear wheel side bell crank,
31...Rear wheel side drag link, 33A, 33B
...Rear wheel steer cylinder, 35A, 35B... Side rod, 36A, 36B... Knuckle arm, 37A, 37B... Rear wheel, 61... Front wheel steer valve, 61a... Pitman arm, 62...
Transmission means, 63... Rear wheel steer valve, 63a...
...Pittman arm, 64...Front wheel side drag link, 65...Rear wheel side drag link, 79...
Stair cylinder, 80...Stair cylinder.

Claims

[Claims for Utility Model Registration] 1. A steering valve is provided that is linked to the steering handle, and the steering driven by the operation of the steering valve is connected, and the front and rear wheels are mechanically linked to the steering handle. In a four-wheel steering system for a vehicle in which a wheel-side bell crank is provided and the front wheels and rear wheels are steered via left and right side rods by these bell cranks, a pitman arm driven by a steering handle is provided with a front- and rear-wheel side rocker. Front wheel side and rear wheel side drag links connect the front wheel side and rear wheel side intermediate rods respectively connected to the swinging links, and the front wheel side and rear wheel side swing links are connected to the front wheel side and rear wheel side bell cranks. A four-wheel steering system for a vehicle, characterized in that the two swing links are each provided with front wheel and rear wheel steer valves that are switched by swinging of the swing links. 2. A steering valve is provided that is linked to the steering handle, and a steering cylinder that is driven by the operation of the steering valve is connected, and front and rear wheel side bell cranks are provided that are mechanically linked and linked to the steering handle. These four-wheel steering systems for vehicles in which the front and rear wheels are steered by bell cranks via left and right side rods are equipped with a front wheel steer valve and a rear wheel steer valve that are operated by a steering handle and are interlocked and connected to each other. , a front wheel drag link connected to the front wheel bell crank is connected to a pitman arm that is disposed on and driven by the front wheel steer valve, and a pitman arm that is disposed on and driven by the rear wheel steer valve is connected to the rear wheel drag link. A four-wheel steering device for a vehicle, characterized in that a rear wheel side drag link is connected to a side bell crank.