JPS6342946U

JPS6342946U -

Info

Publication number: JPS6342946U
Application number: JP13612586U
Authority: JP
Priority date: 1986-09-05
Filing date: 1986-09-05
Publication date: 1988-03-22
Also published as: JPH0354999Y2

Description

[Brief explanation of the drawing]

第１図はこの考案に係る減衰力可変型液圧緩衝
器の一実施例を示す縦断面図、第２図はこの実施
例の作用を示す要部を拡大した断面図、第３図は
従来の減衰力可変型液圧緩衝器を示す縦断面図で
ある。１……ピストン、２……シリンダ、３……上部
液室、４……下部液室、５，６……バルブ装置、
７……ピストンロツド、８……中心孔、９，１０
……側孔、１１……減衰力可変装置、１２……リ
テーナ、１３……開口部、１４……チエツクシー
ト、１５……通孔、１６……弁座、２１……ラン
ド部、２２……チエツクプレート、２３……オリ
フイス、２４……流通路。 Fig. 1 is a longitudinal sectional view showing an embodiment of a variable damping force type hydraulic shock absorber according to this invention, Fig. 2 is an enlarged sectional view of main parts showing the operation of this embodiment, and Fig. 3 is a conventional one. FIG. 2 is a longitudinal sectional view showing a variable damping force type hydraulic shock absorber. 1... Piston, 2... Cylinder, 3... Upper liquid chamber, 4... Lower liquid chamber, 5, 6... Valve device,
7...Piston rod, 8...Center hole, 9,10
... Side hole, 11 ... Damping force variable device, 12 ... Retainer, 13 ... Opening, 14 ... Check sheet, 15 ... Through hole, 16 ... Valve seat, 21 ... Land portion, 22 ... ...Check plate, 23...Orifice, 24...Flow path.

Claims

[Claims for Utility Model Registration] The device is slidably inserted into a cylinder filled with hydraulic fluid, and separates the inside of the cylinder into an upper liquid chamber and a lower liquid chamber, and a space between these two liquid chambers. a piston equipped with a valve device that provides flow resistance to the hydraulic fluid as the hydraulic fluid displaces; one end of the piston is mounted near one end; the other end of the piston sealingly passes through one end of the cylinder; a piston rod having a center hole passing through both ends and a side hole communicating between the center hole and the upper liquid chamber; a damping force variable device that variably controls the damping force by changing the flow path area and controlling the bypass flow rate between the upper liquid chamber and the lower liquid chamber; A retainer having an opening continuous from a center hole, and a check sheet fixed to the opening of the retainer and having a through hole in the center and a valve seat protruding so as to surround the through hole. and a variable damping force type hydraulic buffer, which is placed on the valve seat of the check sheet and has an orifice that provides resistance to the flow of hydraulic fluid and a flow path that allows the hydraulic fluid to flow without resistance. In the valve, the orifice of the check plate placed on the valve seat of the check sheet is formed so as to be located inward from the valve seat and outward from the through hole in the center part, A variable damping force type hydraulic shock absorber, characterized in that the damping force variable hydraulic shock absorber is opposed to a land between a seat and a through hole.