JPH02106970U

JPH02106970U -

Info

Publication number: JPH02106970U
Application number: JP2656789U
Authority: JP
Priority date: 1988-10-19
Filing date: 1989-03-10
Publication date: 1990-08-24

Description

[Brief explanation of drawings]

第１図はパワーステアリング装置の模式図、第
２図は制御のフローチヤート、第３図は制御の別
の実施例のフローチヤート、第４図はパワーステ
アリング装置の別の実施例の模式図、第５図はア
キユムレータの断面図、第６図はパワーステアリ
ング装置の別の実施例の模式図、第７図は制御の
別の実施例のフローチヤート、第８図および第９
図は、第１図または第６図に示した方向制御弁と
は異なる方向制御弁の要部を示す断面図で、第８
図は本管が閉じた状態を、第９図は本管が開いた
状態を示す。１０：ポンプ、１２：並進運動手段、１４：本
管、１６：アキユムレータ、１８，５２：方向制
御弁、２８：バイパス管、３２，４２，５０：検
出手段、３４，４４：コントローラ。 FIG. 1 is a schematic diagram of a power steering device, FIG. 2 is a flowchart of control, FIG. 3 is a flowchart of another embodiment of control, and FIG. 4 is a schematic diagram of another embodiment of the power steering device. FIG. 5 is a sectional view of the accumulator, FIG. 6 is a schematic diagram of another embodiment of the power steering device, FIG. 7 is a flowchart of another embodiment of control, and FIGS.
The figure is a sectional view showing the main parts of a directional control valve that is different from the directional control valve shown in FIG. 1 or 6.
The figure shows the main pipe in a closed state, and FIG. 9 shows the main pipe in an open state. 10: pump, 12: translation means, 14: main pipe, 16: accumulator, 18, 52: directional control valve, 28: bypass pipe, 32, 42, 50: detection means, 34, 44: controller.

Claims

[Claims for Utility Model Registration] (1) A power steering device that assists steering by hydraulic pressure of a pump guided to a translational movement means, comprising: a main pipe connecting the pump and the translational movement means; , an accumulator incorporated in the main pipe, a directional control valve incorporated in the main pipe upstream of the accumulator, and extending from the directional control valve;
A bypass pipe connected to the main pipe on the downstream side of the accumulator, means for detecting the state of the accumulator, and a signal from the detecting means,
A power steering device for a vehicle, including a controller that operates the directional control valve. (2) A power steering device that assists steering by the hydraulic pressure of a pump guided to a translational movement means, comprising a main pipe connecting the pump and the translational movement means, and a power steering device built into the main pipe. an accumulator, a directional control valve incorporated into the main pipe upstream of the accumulator, and extending from the directional control valve;
When the viscosity of the liquid guided to the bypass pipe connected to the main pipe on the downstream side of the accumulator and the translational movement means is equal to or higher than a predetermined value, the directional control valve is operated to cause the liquid to flow into the bypass pipe. A power steering device for a vehicle, comprising means for.