JPH0160909U

JPH0160909U -

Info

Publication number: JPH0160909U
Application number: JP15669487U
Authority: JP
Priority date: 1987-10-15
Filing date: 1987-10-15
Publication date: 1989-04-18

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係わる車両用サス
ペンシヨン装置を示す構成図、第２図Ａ及びＢは
それぞれ上記車両用サスペンシヨン装置における
三方向弁の駆動及び非駆動状態を示す図、第３図
Ａ及びＢはそれぞれ上記車両用サスペンシヨン装
置におけるソレノイドバルブの駆動及び非駆動状
態を示す図、第４図Ａ及びＢはそれぞれ上記車両
用サスペンシヨン装置における給気流量制御バル
ブの駆動及び非駆動状態を示す図、第５図は上記
車両用サスペンシヨン装置における高圧及び低圧
リザーブタンクの設定圧保持動作を示すフローチ
ヤートである。ＦＳ１，ＦＳ２，ＲＳ１，ＲＳ２…サスペンシ
ヨンユニツト、３…空気ばね室、４…ベローズ、
１１…コンプレツサ、１５ａ…高圧リザーブタン
ク、１５ｂ…低圧リザーブタンク、１６…リター
ンポンプ、１７…リターンポンプリレー、１８…
低圧圧力スイツチ、３６…コントロールユニツト
、３８…車速センサ、４３…コンプレツサリレー
、４４…高圧圧力スイツチ、ＯＦＦ…リターンポ
ンプ用タイマ、ＯＦＣ…コンプレツサ用タイマ。 FIG. 1 is a configuration diagram showing a vehicle suspension device according to an embodiment of the present invention, and FIGS. 2A and 2B are diagrams showing the driven and non-driven states of the three-way valve in the vehicle suspension device, respectively. FIGS. 3A and 3B are diagrams showing the driving and non-driving states of the solenoid valve in the vehicle suspension device, respectively, and FIGS. 4A and B are diagrams showing the driving and non-driving states of the air supply flow control valve in the vehicle suspension device, respectively. FIG. 5, which is a diagram showing the non-driving state, is a flowchart showing the set pressure holding operation of the high pressure and low pressure reserve tanks in the vehicle suspension system. FS1, FS2, RS1, RS2...Suspension unit, 3...Air spring chamber, 4...Bellows,
DESCRIPTION OF SYMBOLS 11...Compressor, 15a...High pressure reserve tank, 15b...Low pressure reserve tank, 16...Return pump, 17...Return pump relay, 18...
Low pressure switch, 36...Control unit, 38...Vehicle speed sensor, 43...Compressor relay, 44...High pressure switch, OFF...Timer for return pump, OFC...Timer for compressor.

Claims

[Scope of utility model registration request]

In a vehicle suspension device in which fluid is supplied to or discharged from a fluid spring chamber provided in each suspension unit that supports each wheel to adjust its support height, fluid is supplied to or discharged from the fluid spring chamber. a fluid tank in which a fluid is stored; a tank pressure detection means for detecting that the internal pressure of the fluid tank has reached a preset pressure value; and a tank pressure detection means that detects the preset tank pressure value. tank pressure adjusting means that operates when the fluid tank pressure is detected so as to adjust the internal pressure of the fluid tank in a direction that does not reach the set pressure value; and a certain period of time elapsed from the time when the set pressure value is no longer detected by the tank pressure detecting means. A suspension device for a vehicle, comprising: tank pressure adjustment control means for stopping the tank pressure adjustment means after the above-mentioned tank pressure adjustment means.