JPS5870533U

JPS5870533U - Source damping force adjustable hydraulic shock absorber

Info

Publication number: JPS5870533U
Application number: JP16552981U
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
Also published as: JPS6136826Y2

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
その要部の断面図、−第３図は第１図の■−■線に沿う
横断面図、第４図はその中空ナツト　　　　−の連通孔
が開放された時の状態を示す横断面図、第５図はその減
衰力特性図、第６図はこの考案の他の実施例を示す要部
の断面図である。？、２６，２７，４６．５１・・・・・・連通孔、１３
・・・・・・ピストン、１５．５４・パ・・・・ピスト
ンロッド、１６・・・・・・中空ナツト、１７・・、・
！・・ピストン上室、１８・・・・・・ピストン下室、
１９品・・連ｍ、２０・・・　　　”・・・中心孔、２
１・・・・・・分岐孔、２．）２′、５５・・・・・・
弁、２３．５７・・・・・・オリフィス、　、’：、’
２−７．ｊ訃・・・・・縮み側減衰弁、３２・・・・・
・伸び側減衰弁、４１・・・・・・回転軸、４３・・・
・・・連通孔開閉体。 −第１図第５図Fig. 1 is a longitudinal sectional view showing an embodiment of this invention, Fig. 2 is a sectional view of its main parts, - Fig. 3 is a transverse sectional view taken along the line ■-■ in Fig. FIG. 5 is a cross-sectional view showing the state when the communicating hole of the hollow nut is open, FIG. 5 is a damping force characteristic diagram, and FIG. 6 is a cross-sectional view of the main part showing another embodiment of this invention. . ? , 26, 27, 46.51... Communication hole, 13
・・・・・・Piston, 15.54・・・・Piston rod, 16・・・Hollow nut, 17・・・
! ...Piston upper chamber, 18...Piston lower chamber,
19 items...Continuous m, 20...''...Center hole, 2
1... Branch hole, 2. )2', 55...
Valve, 23.57...Orifice, ,':,'
2-7.ｲ･･･Compression side damping valve, 32...
・Rebound side damping valve, 41...Rotary shaft, 43...
...Communication hole opening/closing body. -Figure 1Figure 5

Claims

[Scope of utility model registration request]

A piston having an extension damping valve and a compression damping valve is fixed to a piston rod with a hollow nut, and the piston lower chamber and the piston upper chamber are connected to each other through the hollow nut, a communication hole formed in the piston rod, and a communication passage. communicate with,
In a hydraulic shock absorber in which a rotating shaft inserted through the piston rod opens and closes the communicating hole with a communicating hole opening/closing body provided at one end of the rotating shaft, the communicating passage is formed at a center formed at the center of the piston rod. a branch hole formed in the piston rod so as to branch from the center hole and open into the piston upper chamber and communicate the piston upper chamber with the center hole; and a piston upper chamber of the branch hole. Either one of the piston rod and a valve attached to a side opening so as to allow communication and isolation between the branch hole and the piston upper chamber, and a valve that opens into the piston upper chamber and connects the piston upper chamber and the center hole. A damping force adjustable hydraulic shock absorber, characterized in that the damping force adjustable hydraulic shock absorber is formed of an orifice provided to communicate with the damping force.