JPH01152811U

JPH01152811U -

Info

Publication number: JPH01152811U
Application number: JP5076888U
Authority: JP
Priority date: 1988-04-15
Filing date: 1988-04-15
Publication date: 1989-10-20
Anticipated expiration: 2003-04-15
Also published as: JP2505228Y2

Description

[Brief explanation of the drawing]

第１図は本考案の基本概念図、第２〜７図は本
考案に係る減衰力可変型液圧緩衝装置の一実施例
を示す図であり、第２図はそのシヨツクアブソー
バの全体構成を示す断面図、第３図はその要部断
面構成図、第４図はそのシステムの全体構成図、
第５図はその一部分の回路図、第６図はその減衰
力可変制御のプログラムを示すフローチヤート、
第７図はその作用を説明するための図である。１……シヨツクアブソーバ、３……シリンダ、
４……ピストン、６０……第１の圧電素子（第１
の検出手段、第２の操作手段）、７０……減衰手
段（第１の操作手段、第２の操作手段）、｛７１
……スライダ、７２……バルブコア、７３……バ
ルブボデイ、７４……圧側バルブ、７５……伸側
バルブ、７６……オリフイス、７７……オリフイ
ス｝（減衰手段）、９０……第２の圧電素子（第
２の検出手段、第１の操作手段）、９４……キヤ
ツプ、１００……コントロールユニツト（制御手
段）、１０１……Ｉ／Ｏポート、１１０……入力
回路、１２０……演算回路、１３０……駆動回路
、１４０……駆動用電源回路。 Fig. 1 is a basic conceptual diagram of the present invention, Figs. 2 to 7 are diagrams showing an embodiment of a variable damping force type hydraulic shock absorber according to the present invention, and Fig. 2 shows the overall structure of the shock absorber. 3 is a cross-sectional diagram of the main parts thereof, and FIG. 4 is a diagram of the overall configuration of the system.
Fig. 5 is a circuit diagram of a part of it, Fig. 6 is a flowchart showing a program for variable damping force control,
FIG. 7 is a diagram for explaining the effect. 1...Shock absorber, 3...Cylinder,
4... Piston, 60... First piezoelectric element (first
detection means, second operating means), 70... damping means (first operating means, second operating means), {71
... slider, 72 ... valve core, 73 ... valve body, 74 ... compression side valve, 75 ... expansion side valve, 76 ... orifice, 77 ... orifice} (damping means), 90 ... second piezoelectric element (second detection means, first operation means), 94...cap, 100...control unit (control means), 101...I/O port, 110...input circuit, 120...arithmetic circuit, 130 ...Drive circuit, 140... Drive power supply circuit.

Claims

[Claims for Utility Model Registration] (a) A first detection means for detecting hydraulic pressure on the compression side of a variable damping force type shock absorber; (b) For detecting hydraulic pressure on the rebound side of a variable damping force type shock absorber. (c) The rate of change in hydraulic pressure is determined from the outputs of the first and second detection means, and when the rate of change reaches an extreme value, the shock absorber is set to a predetermined high damping force. , when the rate of change decreases to a predetermined value, a control value is calculated to provide a predetermined low damping force and a control signal is output, and at least one of the rising and falling edges of the control signal is set to a predetermined value. (d) a first operating means for changing the damping force on the compression side based on the output of the control means; and (e) a first operating means for changing the damping force on the rebound side based on the output of the control means. A variable damping force hydraulic shock absorber comprising: a second operating means;