JPH0373740U

JPH0373740U -

Info

Publication number: JPH0373740U
Application number: JP1826690U
Authority: JP
Priority date: 1989-07-14
Filing date: 1990-02-27
Publication date: 1991-07-24

Description

[Brief explanation of drawings]

第１図は液圧緩衝器の要部を示す断面図、第２
図は液圧緩衝器の別の実施例の要部を示す断面図
、第３図は液圧緩衝器のさらに別の実施例の要部
を示す断面図、第４図は減衰力の時間に対する特
性図、第５図は減衰力のピストン速度に対する特
性図、第６図は液圧緩衝器のさらに別の実施例の
要部を示す断面図、第７図ａ，ｂは第６図に示し
た液圧緩衝器の作用を示す断面図、第８図は液圧
緩衝器のさらに別の実施例の要部を示す断面図、
第９図は第８図の液圧緩衝器に使用した弁体の斜
視図、第１０図ａ，ｂは第８図に示した液圧緩衝
器の作用を示す断面図である。１０，７１，７２……シリンダ、１２，１０２
……ピストンロツド、１４，７４………仕切部材
、１８，２０，７６……液室、２２，２４，７８
，８０……ポート、４０，８２，１１２，１３０
……バイパス通路、４２，６２，９２，１１４，
１３２……弁体。 Figure 1 is a sectional view showing the main parts of the hydraulic shock absorber;
The figure is a cross-sectional view showing the main part of another embodiment of the hydraulic shock absorber, Figure 3 is a cross-sectional view showing the main part of yet another embodiment of the hydraulic shock absorber, and Figure 4 is a diagram showing the damping force versus time. FIG. 5 is a characteristic diagram of damping force versus piston speed. FIG. 6 is a sectional view showing the main part of yet another embodiment of the hydraulic shock absorber. FIGS. 7a and 7b are shown in FIG. FIG. 8 is a cross-sectional view showing the main parts of yet another embodiment of the hydraulic shock absorber;
9 is a perspective view of a valve body used in the hydraulic shock absorber shown in FIG. 8, and FIGS. 10 a and 10 b are sectional views showing the operation of the hydraulic shock absorber shown in FIG. 8. 10,71,72...Cylinder, 12,102
... Piston rod, 14, 74 ... Partition member, 18, 20, 76 ... Liquid chamber, 22, 24, 78
, 80...port, 40, 82, 112, 130
...Bypass passage, 42, 62, 92, 114,
132... Valve body.

Claims

[Scope of utility model registration request]

a cylinder; a piston rod that extends and retracts relative to the cylinder; and at least one first port that partitions the interior of the cylinder into two liquid chambers, through which liquid flows when the piston rod is extended, and through which liquid flows when the piston rod retracts. a partition member that communicates the two liquid chambers through at least one second port, the hydraulic shock absorber comprising a partition member that communicates the two liquid chambers without passing through the first and second ports. a bypass passage;
a valve body disposed in relation to the bypass passage, the valve body being configured to open the bypass passage when a difference in pressure generated between the two liquid chambers reaches a predetermined value. Hydraulic shock absorber with variable damping force.