JPS58101032U

JPS58101032U - Shock absorber

Info

Publication number: JPS58101032U
Application number: JP19428481U
Authority: JP
Inventors: 坂崎　明彦
Original assignee: Fuji Jukogyo KK
Current assignee: Subaru Corp
Priority date: 1981-12-29
Filing date: 1981-12-29
Publication date: 1983-07-09

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図は自動車の車輪懸架装置のばね系の一般的なモデ
ルを示す説明図、第２図Ａ、　Ｂ、　Ｃ，Ｄはショック
アブソーバをサインカーブでストロークさせる場合の各
作動状態を順次説明する図、第３図は第２図のようにし
てストロークさせた場合のショックアブソーバの減衰力
特性を示す図、第４図は本考案の実施例を示す断面図で
ある。１・・・シリンダ、１ａ・・・大径部、１ｂ・・・小径
部、２・・・ピストンロッド、３・・・第１ピストン、
４・・・第２ピストン、３ａ、　　４ａ−オリフィス、
３ｂ、　　４ｂ・・・ワンウェイバルブ、５・・・フリ
ーピストン。Figure 1 is an explanatory diagram showing a general model of the spring system of an automobile wheel suspension system, and Figures 2 A, B, C, and D sequentially explain each operating state when the shock absorber is stroked in a sine curve. 3 are diagrams showing the damping force characteristics of the shock absorber when stroked as shown in FIG. 2, and FIG. 4 is a sectional view showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Cylinder, 1a... Large diameter part, 1b... Small diameter part, 2... Piston rod, 3... First piston,
4...Second piston, 3a, 4a-orifice,
3b, 4b...One-way valve, 5...Free piston.

Claims

[Scope of utility model registration request]

(1) The part near the bottom of the cylinder has a /
- Form a small diameter part with a small inner diameter of L, fit the free histone into the small diameter part, fill the sealed chamber formed between the bottom surfaces of the free piston with high pressure gas, and fill the other sealed chambers of the cylinder. A piston rod which is filled with liquid and has a large diameter first piston corresponding to the large diameter part of the cylinder and provided with an orifice for liquid circulation, and a small diameter second piston corresponding to the small diameter part of the cylinder is moved in the direction of contraction. A shock absorber characterized in that the second piston is fitted so as to be slidable in the axial direction so that the second piston reaches inside the small diameter portion of the cylinder at the final stage.

(2) The shock absorber according to claim 1, wherein the second piston has an orifice that opens only when operating in the extension direction.