JPS6084409U

JPS6084409U - Variable damping force hydraulic shock absorber

Info

Publication number: JPS6084409U
Application number: JP17808083U
Authority: JP
Inventors: 俊彰山本; 肇上前
Original assignee: トヨタ自動車株式会社
Priority date: 1983-11-17
Filing date: 1983-11-17
Publication date: 1985-06-11

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の液圧緩衝器の一例を示す正面断面図であ
り、第２図は本考案の一実施例である減衰力可変式液圧
緩衝器の正面断面図、第３図は本考案の他の実施例であ
る液圧緩衝器の要部正面断面図である。４２：ピストン、−４４ニジリンダ、４６：第一液室、
４８：第二液室、５０：ピストンロッド、５２：外筒、
５４：リザーバ室、５８：第一バルブ、１３２：弁子、
′７４：第二バルブ、１２０：隙間、１２２：通孔、１
２４：連通孔、１３０：第三バルブ、１４０：可変オリ
フィス、１４２：固定オリフィス。Fig. 1 is a front sectional view showing an example of a conventional hydraulic shock absorber, Fig. 2 is a front sectional view of a variable damping force type hydraulic shock absorber which is an embodiment of the present invention, and Fig. 3 is a front sectional view showing an example of a conventional hydraulic shock absorber. FIG. 7 is a front sectional view of a main part of a hydraulic shock absorber according to another embodiment of the invention. 42: Piston, -44 Niji cylinder, 46: First liquid chamber,
48: second liquid chamber, 50: piston rod, 52: outer cylinder,
54: Reservoir chamber, 58: First valve, 132: Valve,
'74: Second valve, 120: Gap, 122: Through hole, 1
24: Communication hole, 130: Third valve, 140: Variable orifice, 142: Fixed orifice.

Claims

[Claims for Utility Model Registration] A first fluid formed by a cylinder and a piston fluid-tightly fitted thereto, the volume of which decreases when the piston is moved in a direction in which a piston rod connected to the piston contracts. a third liquid chamber formed on the opposite side of the first liquid chamber with the piston as a boundary, the volume of which increases as the piston moves; and the cylinder and an outer cylinder disposed outside of the third liquid chamber. a reservoir chamber formed between the reservoir chamber and the first liquid chamber, which allows liquid to freely flow from the reservoir chamber to the first liquid chamber while blocking flow in the opposite direction; a first valve, which is provided between the second liquid chamber and the reservoir chamber, and prevents the flow of liquid from the reservoir chamber to the second liquid chamber, and from the second liquid chamber to the reservoir chamber; a second valve that allows the flow of liquid and throttles the flow rate of the liquid; a communication passage provided in the piston that communicates the first liquid chamber and the second liquid chamber; a third valve that blocks the flow of liquid from the second liquid chamber to the first liquid chamber while allowing the flow in the opposite direction; and a variable orifice having a movable valve element that narrows the damping force in stages.