JPS58112747U

JPS58112747U - Variable damping force hydraulic shock absorber

Info

Publication number: JPS58112747U
Application number: JP1064982U
Authority: JP
Inventors: 土屋　隆義
Original assignee: 株式会社昭和製作所
Priority date: 1982-01-28
Filing date: 1982-01-28
Publication date: 1983-08-02

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 the drawing]

第１図は本考案実施例に係る油圧緩衝器の断面図、第２
図は本考案の要部拡大断面図、第３図は油圧操作部の断
面図である。１・・・ピストンロッド、２・・・ピストン、３・・・
シリンダ、７・・・チェックバルブ、８・・・油路、１
０・・・オリフィス、１１・・・プラグ、１２・・・縮
径段部、１４・・・ばね、１７・・・先細テーパ一部、
１８・・・油室、１９・・・油圧パイプ、２０・・・油
圧操作部。Fig. 1 is a sectional view of a hydraulic shock absorber according to an embodiment of the present invention;
The figure is an enlarged sectional view of the main part of the present invention, and FIG. 3 is a sectional view of the hydraulic operating section. 1... Piston rod, 2... Piston, 3...
Cylinder, 7...Check valve, 8...Oil passage, 1
0... Orifice, 11... Plug, 12... Diameter reduction step, 14... Spring, 17... Taper part,
18... Oil chamber, 19... Hydraulic pipe, 20... Hydraulic operation section.

Claims

[Scope of utility model registration request]

(1) A hydraulic shock absorber in which a piston equipped with a damping force generating mechanism is fixed to the tip of a piston rod, and the piston is slidably fitted into a cylinder filled with oil,
An orifice 10 that communicates with the oil chamber 9 above the piston of the cylinder 3 is bored in the piston rod 1 formed in a hollow manner, and a plug 11 having a tapered portion 17 at its lower end is attached to the oil passage 8 inside the hollow piston rod. A diameter-reducing stepped portion 12 is fitted to the oil passage 8 so as to be slidable therein.
The oil chamber 18 formed in the hollow interior of the piston rod above the plug 11 is connected via a hydraulic pipe 19 to a hydraulic operating section 20 installed at a distance from the shock absorber body, so that the plug is adjusted by the hydraulic operating section 20. The plug 11 is caused to slide up and down due to the change in the oil pressure above, and the diameter-reducing stepped portion 12 of the oil passage 8 is
A variable damping force hydraulic shock absorber that opens and closes gradually.

(2) The variable damping force type hydraulic shock absorber according to claim 1, which is further characterized in that each hydraulic pipe 19 of the plurality of shock absorbers is connected to a common hydraulic operating section 20.