JPH034946U

JPH034946U -

Info

Publication number: JPH034946U
Application number: JP6610389U
Authority: JP
Priority date: 1989-06-06
Filing date: 1989-06-06
Publication date: 1991-01-18

Description

[Brief explanation of the drawing]

第１図は本考案のアクテイブサスペンシヨンの
一つの実施例の流体回路を示す概略構成図、第２
図は第１図における油圧シリンダの要部断面図で
ある。１……油圧アクチユエータ、２……作動流体室
、２ａ……上室、２ｂ……下室、３２……圧力制
御弁（圧力調整手段）、１０６……油圧シリンダ
、１０８……ピストン、１４０……流路（貫通孔
）、１４２……フイルタ、２０２……ピストンロ
ツド、２０６……蓋部材、２０８……応動部材、
２１０……第１スプリング（付勢手段）、２１２
……弁座、２１４……収納穴、２１６……ボール
、２１８……第２スプリング、２２２……通流口
、２３０……逆止弁、２４０……側口。 Figure 1 is a schematic configuration diagram showing the fluid circuit of one embodiment of the active suspension of the present invention;
The figure is a sectional view of a main part of the hydraulic cylinder in FIG. 1. DESCRIPTION OF SYMBOLS 1... Hydraulic actuator, 2... Working fluid chamber, 2a... Upper chamber, 2b... Lower chamber, 32... Pressure control valve (pressure adjustment means), 106... Hydraulic cylinder, 108... Piston, 140... ...flow path (through hole), 142 ... filter, 202 ... piston rod, 206 ... lid member, 208 ... response member,
210...first spring (biasing means), 212
... Valve seat, 214 ... Storage hole, 216 ... Ball, 218 ... Second spring, 222 ... Communication port, 230 ... Check valve, 240 ... Side port.

Claims

[Claims for Utility Model Registration] (1) A hydraulic suspension comprising a hydraulic actuator with an accumulator interposed between each wheel and the vehicle body, and a pressure adjustment means for adjusting the pressure of the hydraulic actuator, The hydraulic actuator includes a hydraulic cylinder connected to the accumulator via a throttle, a piston that divides the inside of the hydraulic cylinder into an upper chamber and a lower chamber, and a piston that is bored in the piston and that divides the inside of the hydraulic cylinder into an upper chamber and a lower chamber. a piston rod connected to one end of the piston, a through hole vertically penetrating the inside of the piston rod and having one end communicating with the pressure adjusting means, and an oil hole provided at the other end of the through hole. a check valve that allows flow only from the lower chamber to the through hole; a plurality of side ports that branch from the through hole and communicate with the outer peripheral surface of the piston rod; a filter disposed between the piston rod and the outer periphery of the piston rod; a lid member that covers one end of the filter and is fitted to the piston rod; a response member that is fitted to the piston rod and responds in the vertical direction; A hydraulic suspension comprising: urging means disposed between the responsive member and the piston and urging the responsive member toward the other end of the filter. (2) The biasing means includes a spring tensioned between the piston and the responsive member, and the spring causes the responsive member to come into contact with the other end of the filter. Claim (1) characterized in that the flow of working fluid from the end side is blocked.
Hydraulic suspension as described in ). (3) The check valve has a bottomed cylindrical valve seat that is fixed to the tip of the piston rod and has a valve housing hole that communicates the lower chamber and the through hole;
A ball stored in the storage hole and a second spring tensioned in the storage hole bias the ball toward the lower chamber, thereby blocking the flow from the through hole to the lower chamber. The hydraulic suspension according to claim (1), characterized in that: