JPS5870534U

JPS5870534U - Source damping force adjustable hydraulic shock absorber

Info

Publication number: JPS5870534U
Application number: JP16553081U
Authority: JP
Inventors: 正博足羽
Original assignee: トキコ株式会社
Priority date: 1981-11-06
Filing date: 1981-11-06
Publication date: 1983-05-13

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図はこの考案の一実施例を示す縦断面図、第２図は
操作機構の拡大縦断面図、第３図ａ、　　ｂはその要部
の動作を説明するために示す図、第４　、図は第１図の
ＩＶ−ＩＶ線に沿う断面図、第５図はこの考案の他の実
施例を示す第４図同様の図、第６−図は減衰力特性を示
す曲線図である。１・・・・・・シリンダ、４・・・・・・ピストンロッ
ド、５・・・・・・ピ不トン、８・・・・・・第１の減
衰弁、９・・・・・・第２の減衰弁、１５・・・・・・
弁体、２１・・・・・・操作ロッド、２４・・・・・・
バイパス通路、３４！・・・・・ガイド体、３５゜３５
・・・・・・固定ガイド突起、３６・・・・・田−タ、
３７・・・・・・連結溝、３８・・・・・・山形部、３
９・・・・・・圧縮スプリング、４０・・・・・・スラ
イダ、４２．４２・・・・・・可動ガイド突起、４３・
・・・・・電磁ソレノイド、Ｒ□・・・・・・ピストン
上室、Ｒ２・・・・・・ピストン下室。Fig. 1 is a longitudinal sectional view showing an embodiment of this invention, Fig. 2 is an enlarged longitudinal sectional view of the operating mechanism, Figs. , the figure is a sectional view taken along the line IV-IV in figure 1, figure 5 is a diagram similar to figure 4 showing another embodiment of this invention, and figure 6 is a curve diagram showing the damping force characteristics. . DESCRIPTION OF SYMBOLS 1...Cylinder, 4...Piston rod, 5...Piton, 8...First damping valve, 9... Second damping valve, 15...
Valve body, 21... Operating rod, 24...
Bypass passage, 34! ...Guide body, 35°35
...Fixed guide protrusion, 36...Data,
37... Connection groove, 38... Chevron portion, 3
9...Compression spring, 40...Slider, 42.42...Movable guide protrusion, 43.
...Electromagnetic solenoid, R□...Piston upper chamber, R2...Piston lower chamber.

Claims

[Scope of utility model registration request]

The upper cylinder chamber and the lower cylinder chamber are communicated with the inner side of the piston, which is fixed to the lower end of the piston rod by tightening a hollow nut screwed onto the lower end of the piston rod, and which is equipped with a damping valve and is housed in the cylinder chamber. A bypass passage is provided, a valve body that can freely open and close the bypass passage is provided inside the hollow nut, and inside the piston rod,
An operating rod is rotatably provided, the lower end of which is connected to the valve body, and the upper end of which extends externally from the upper end of the piston rod. In the damping force adjustable hydraulic shock absorber, the damping force adjustment type hydraulic shock absorber is configured to adjust the damping force by opening and closing the bypass passage according to the movement of the hydraulic shock absorber. A cylindrical guide body, a rotor provided inside the guide body so as to be vertically movable and rotatable, and a rotor provided at the lower end of the rotor to allow the upper end of the operating rod to be vertically movable but not rotatable. a compression spring disposed between the inner bottom surface of the guide body and the lower end of the rotor to bias the rotor upward; and a compression spring disposed at the upper end of the rotor in the circumferential direction of the rotor. a sawtooth-shaped chevron portion that rises and falls at equal intervals along the guide body; two fixed guide protrusions that are provided along the vertical direction on the intermediate inner surface of the guide body and whose lower ends match the valley portions of the chevron portion; a slider provided inside the upper side of the guide body and guided in a vertically movable manner by the fixed guide protrusion; and two movable guides provided at the lower end of the slider, protruding downward and positioned on one side of the fixed guide protrusion. a protrusion, and one electromagnetic solenoid provided on the upper part of the guide body and capable of driving the slider up and down; - the movable guide protrusion pushes the chevron-shaped part downward as the slider moves up and down; By doing so, the operating rod is rotated one by one of the angular portions via the rotor.
Hydraulic shock absorber with adjustable damping force.