JPH0413466U

JPH0413466U -

Info

Publication number: JPH0413466U
Application number: JP5463090U
Authority: JP
Priority date: 1990-05-28
Filing date: 1990-05-28
Publication date: 1992-02-03

Description

[Brief explanation of the drawing]

第１図イはこの考案による第１実施例の油圧シ
ステム図、第１図ロは第１図イの油圧システムに
おける操向モード〜ソレノイド対照表、第２イ、
第３図イ、第４図イはそれぞれ第２〜第４実施例
の油圧システム図、第２図ロ、第３図ロ、第４図
ロはそれぞれ第２図イ、第３図イ、４図イの油圧
システムにおける操向モード〜ソレノイド対照表
、第５図イ，ロはそれぞれ後輪ステアリング、後
輪逆ステアリングの説明図、第６図イは前輪ステ
アリング、第６図ロはコーデイネイトステアリン
グ、第６図ハはクラブステアリングの説明図、第
７図イは前輪逆ステアリング、第７図ロはコーデ
イネイト逆ステアリング、第７図ハはクラブ逆ス
テアリングの説明図、第８図は従来の油圧システ
ム図、第９図は第８図の油圧システムにおける操
向モード〜ソレノイド対照表である。１，２……３位置切換弁、３，５……２位置切
換弁、４……３位置切換弁、６，８……２位置切
換弁、７……３位置切換弁、９，１０，１１，１
２……２位置切換弁。 Fig. 1A is a diagram of the hydraulic system of the first embodiment according to this invention, Fig. 1B is a comparison table of steering modes to solenoids in the hydraulic system of Fig. 1A, and Fig.
Figures 3A and 4A are hydraulic system diagrams of the second to fourth embodiments, respectively, and Figures 2B, 3B, and 4B are Figures 2A, 3A, and 4, respectively. Figure A: Steering mode in hydraulic system - solenoid comparison table; Figure 5 A and B are illustrations of rear wheel steering and rear wheel reverse steering respectively; Figure 6 A is front wheel steering; Figure 6 B is coordinated steering. , Figure 6 C is an explanatory diagram of club steering, Figure 7 A is front wheel reverse steering, Figure 7 B is a coordinated reverse steering diagram, Figure 7 C is an explanatory diagram of club reverse steering, and Figure 8 is conventional hydraulic The system diagram, FIG. 9, is a comparison table of steering modes and solenoids in the hydraulic system of FIG. 8. 1, 2... 3 position switching valve, 3, 5... 2 position switching valve, 4... 3 position switching valve, 6, 8... 2 position switching valve, 7... 3 position switching valve, 9, 10, 11,1
2...2 position switching valve.

Claims

[Scope of claim for utility model registration] (1) In a hydraulic steering system for a vehicle equipped with hydraulic steering for front wheels and rear wheels, front wheel mode, rear wheel mode, four-wheel anti-phase mode, four-wheel in-phase mode , and a means for switching a reverse correction mode of each mode in a steering hydraulic circuit, the mode switching means being two three-position switching valves. (2) The hydraulic steering device according to claim (1), characterized in that the mode switching means is two two-position switching valves and one three-position switching valve. (3) The hydraulic steering device according to claim (1), characterized in that the mode switching means is four two-position switching valves.