JPS6416407U

JPS6416407U -

Info

Publication number: JPS6416407U
Application number: JP11156387U
Authority: JP
Priority date: 1987-07-21
Filing date: 1987-07-21
Publication date: 1989-01-26

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る懸架・転舵装
置を示す回路図、第２図は他の実施例を第１図と
同様に示す回路図、第３図は従来の懸架機構を示
す概略図、第４図は従来の後輪転舵機構を示す概
略図である。〔符号の説明〕、１……懸架機構、２……後輪
転舵機構、３……油圧源、４……タンク、５……
供給路、６……排出路、１０……油圧サスペンシ
ヨンシリンダ、１１，２１，７１……アクテイブ
制御弁、２０……パワーシリンダ、３０，３１，
３５……油圧ポンプ、３３……油圧設定用リリー
フ弁、３４……アンロードバルブ、５１……圧油
迂回用リリーフ弁、６０……リターン制御バルブ
、ＰＳ……パワーステアリング機構、Ｑ１乃至Ｑ
７……アキユムレーター、Ｔ……車輪。 Fig. 1 is a circuit diagram showing a suspension/steering device according to one embodiment of the present invention, Fig. 2 is a circuit diagram showing another embodiment similar to Fig. 1, and Fig. 3 is a circuit diagram showing a conventional suspension mechanism. FIG. 4 is a schematic diagram showing a conventional rear wheel steering mechanism. [Explanation of symbols], 1... Suspension mechanism, 2... Rear wheel steering mechanism, 3... Hydraulic power source, 4... Tank, 5...
Supply path, 6... Discharge path, 10... Hydraulic suspension cylinder, 11, 21, 71... Active control valve, 20... Power cylinder, 30, 31,
35... Hydraulic pump, 33... Oil pressure setting relief valve, 34... Unload valve, 51... Pressure oil bypass relief valve, 60... Return control valve, PS... Power steering mechanism, Q1 to Q
7...Accumulator, T...Wheel.

Claims

[Scope of Claim for Utility Model Registration] (1) A vehicle comprising hydraulic suspension cylinders disposed on the left and right sides of the front and rear sides of the vehicle and power cylinders disposed on the left and right sides of the rear side of the vehicle. In this suspension/steering system, the hydraulic suspension cylinder and the power cylinder are each provided with an active control valve, and
A supply path communicating between the hydraulic pump and the hydraulic suspension cylinder, and a discharge path communicating between the hydraulic suspension cylinder and the tank are connected to the supply path and the discharge path communicating with the power cylinder, respectively, and the hydraulic pump and the discharge path communicate with each other. A relief valve for setting oil pressure is disposed adjacent to the supply passage, and a pressure oil bypass relief valve is disposed between the most downstream side of the supply passage and the most upstream side of the discharge passage. A suspension/steering device for a vehicle, characterized in that a return control valve is provided on the downstream side. (2) An unload valve is installed in parallel with the oil pressure setting relief valve, and the pressure oil from the hydraulic pump is returned to the tank through the unload valve when the hydraulic suspension cylinder and power cylinder are not in operation. A suspension and steering system for a vehicle according to claim 1 of the utility model registration claim, which is formed by: (3) A power steering mechanism that enables steering of the front wheels is disposed on the front wheel side of the vehicle, and the hydraulic pump is configured as a dual pump, and one hydraulic pump is connected to the power steering mechanism. The vehicle suspension and steering system according to claim 1, wherein the other hydraulic pump is connected to a supply path communicating with the hydraulic suspension cylinder and the power cylinder. (4) A power steering mechanism that enables steering of the front wheels is disposed on the front wheel side of the vehicle, and the pressure oil supplied to the power steering mechanism, a hydraulic suspension cylinder, and a power cylinder is connected to a single hydraulic system. A suspension and steering device for a vehicle according to claim 1, which is discharged from a pump.