JPS60185739U

JPS60185739U - hydraulic shock absorber

Info

Publication number: JPS60185739U
Application number: JP7361384U
Authority: JP
Inventors: 田辺　久夫
Original assignee: トキコ株式会社
Priority date: 1984-05-19
Filing date: 1984-05-19
Publication date: 1985-12-09
Also published as: JPH0311466Y2

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図は本実施例に係る油圧緩衝器を示す第２図中のＩ
−Ｉ線に沿う要部縦断面図、第２図は第１図中の■−■
矢示方向断面図、第３図は同じく第１図中の■−■矢示
方向断面図、第４図は減衰力特性線図である。１・・・シリンダ、２・・・ピストンロッド、３・・・
ピストン、４・・・油通路、５・・・−側弁塵、６・・
・切欠溝、７・・・他側弁座、８・・・縮小側ディスク
バルブ、１１・・・伸長側ディスクバルブ、１５・・・
オリフィス、１６・・・逆止弁、Ａ、　Ｂ・・・油室。第１図第２図　−Figure 1 shows I in Figure 2, which shows the hydraulic shock absorber according to this embodiment.
- Longitudinal cross-sectional view of the main part along line I, Figure 2 is the ■-■ in Figure 1
FIG. 3 is a cross-sectional view taken along the line (■--■) in FIG. 1, and FIG. 4 is a damping force characteristic diagram. 1...Cylinder, 2...Piston rod, 3...
Piston, 4...Oil passage, 5...- side valve dust, 6...
・Notch groove, 7...Other side valve seat, 8...Reduction side disc valve, 11...Extension side disc valve, 15...
Orifice, 16...Check valve, A, B...Oil chamber. Figure 1 Figure 2 -

Claims

[Scope of utility model registration request]

(1) A cylinder, a piston rod having one end protruding outside the cylinder and the other end inserted into the cylinder, and a piston rod fixed to the other end of the piston rod, defining the inside of the cylinder into two oil chambers. a piston, a plurality of oil passages bored in the axial direction of the piston, and one side valve formed on one side of the piston so as to surround one side opening of the plurality of oil passages among the oil passages. the other side valve seat formed on the other side of the piston so as to surround the other side openings of the remaining oil passages among the respective oil passages; a contraction-side disc valve provided thereon, an extension-side disc valve arranged to sit on and off the other-side valve seat, and a valve seat formed on either one of the negative-side valve seat and the other-side valve seat. A hydraulic shock absorber comprising: an orifice; and a check valve that varies the passage area of some of the oil passages among the plurality of oil passages surrounded by the one valve seat.

(2) The orifice is formed in the one side valve seat, and the check valve is located in the negative side valve housing and is provided between one side of the piston and the reduction side disc valve. Hydraulic shock absorber according to scope (1).

(3) A notched groove for positioning is formed in the − side valve dust, and the positioning in the rotational direction is determined by fitting the check valve into the notched groove. Hydraulic shock absorber as described.