JPH02126910U

JPH02126910U -

Info

Publication number: JPH02126910U
Application number: JP3546589U
Authority: JP
Priority date: 1989-03-30
Filing date: 1989-03-30
Publication date: 1990-10-19

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す簡略油圧配管
図、第２図は同上実施例における横方向加速度応
動開閉弁の車両前方側から見た断面図、第３図は
横方向加速度応動開閉弁の別の実施例を示す構成
図、第４図は本考案の別の実施例を示す簡略油圧
配管図、第５図は従来例の簡略油圧配管図、第６
図はレベリングバルブの構成図である。１……前輪、２……前軸、３……後輪、４……
後軸、５Ｌ，５Ｒ……前部油空圧サスペンシヨン
、６Ｌ，６Ｒ，１１Ｌ，１１Ｒ……油圧シリンダ
、６Ｌａ，６Ｒａ……油室、７Ｌ，７Ｒ，１２，
５２……ガススプリング、８Ｌ，８Ｒ，１３，７
０……レベリングバルブ、１０Ｌ，１０Ｒ……後
部油空圧サスペンシヨン、１１Ｌａ，１１Ｒａ…
…上室、１１Ｌｂ，１１Ｒｂ……下室、１５……
オイルポンプ、１７……オイルタンク、１９，２
１，２２……連通パイプ、４０，６０……通路開
閉弁。 Fig. 1 is a simplified hydraulic piping diagram showing one embodiment of the present invention, Fig. 2 is a sectional view of the lateral acceleration responsive opening/closing valve in the same embodiment as seen from the front side of the vehicle, and Fig. 3 is a lateral acceleration responsive opening/closing valve. FIG. 4 is a simplified hydraulic piping diagram showing another embodiment of the present invention; FIG. 5 is a simplified hydraulic piping diagram of a conventional example; FIG.
The figure is a configuration diagram of a leveling valve. 1...Front wheel, 2...Front axle, 3...Rear wheel, 4...
Rear axle, 5L, 5R...Front hydropneumatic suspension, 6L, 6R, 11L, 11R...Hydraulic cylinder, 6La, 6Ra...Oil chamber, 7L, 7R, 12,
52...Gas spring, 8L, 8R, 13, 7
0... Leveling valve, 10L, 10R... Rear hydraulic pneumatic suspension, 11La, 11Ra...
...Upper chamber, 11Lb, 11Rb...Lower chamber, 15...
Oil pump, 17...Oil tank, 19,2
1, 22... Communication pipe, 40, 60... Passage opening/closing valve.

Claims

[Scope of Claim for Utility Model Registration] (1) A front hydro-pneumatic suspension consisting of a single-acting hydraulic cylinder and an accumulator, provided on each side of the front wheel, and The front leveling valve controls oil supply and drainage of the front hydropneumatic suspension in response to high displacement, and the rear hydropneumatic pressure system is installed on each side of the rear wheel, consisting of a double-acting hydraulic cylinder and an accumulator. suspension, and a rear leveling valve that controls oil supply and drainage from the upper chambers of the hydraulic cylinders of both rear hydropneumatic suspensions in response to changes in vehicle height. A front and rear communication oil passage is provided that communicates the cylinder oil chamber with the lower hydraulic cylinder chamber of the rear hydropneumatic suspension located diagonally, and the rear portion communicates between the upper chambers of the hydraulic cylinders of the rear hydropneumatic suspension. 1. A hydraulic and pneumatic suspension device for a vehicle, characterized in that a communicating oil passage is provided, and a passage opening/closing valve is interposed in the rear communicating oil passage to control closing of the passage in response to an increase in lateral acceleration of the vehicle. (2) A front hydro-pneumatic suspension consisting of a single-acting hydraulic cylinder and an accumulator, installed on each side of the front wheels, and a front hydro-pneumatic suspension that responds to changes in vehicle height. a front leveling valve that controls the supply and drainage of oil to the front hydropneumatic suspension; a rear hydropneumatic suspension consisting of a double-acting hydraulic cylinder and an accumulator; and a rear hydropneumatic suspension installed on each side of the rear wheel; Each hydraulic suspension is equipped with a rear leveling valve that controls oil supply and drainage for the rear hydraulic and pneumatic suspensions in response to changes in vehicle height, and each hydraulic cylinder of the front hydraulic and pneumatic suspensions A vehicular hydropneumatic suspension device characterized in that a front and rear communication oil passage is provided to communicate an oil chamber and a lower chamber of a hydraulic cylinder of a rear hydropneumatic suspension diagonally located.