JPS61160341U

JPS61160341U -

Info

Publication number: JPS61160341U
Application number: JP4318585U
Authority: JP
Priority date: 1985-03-27
Filing date: 1985-03-27
Publication date: 1986-10-04

Description

[Brief explanation of the drawing]

第１図は本考案に係る液圧緩衝器の要部を示す
断面図、第２図は第１図の２―２線に沿つて切断
した断面図、第３図は第１図の３―３線に沿つて
切断した断面図、第４図はピストン速度と減衰力
との関係を示す特性図である。１０：液圧緩衝器、１２：シリンダ、１４：ピ
ストン、１６；ピストンロツド、２６：第１の通
路、２８：第２の通路、３２：調整バルブ、３６
：第３の通路、３８：第４の通路、４２：ケース
、５０，５２，６０：通路、６２：逆止め弁。 Fig. 1 is a sectional view showing the main parts of the hydraulic shock absorber according to the present invention, Fig. 2 is a sectional view taken along line 2-2 in Fig. 1, and Fig. 3 is a sectional view taken along line 2-2 in Fig. 1. FIG. 4, which is a sectional view taken along line 3, is a characteristic diagram showing the relationship between piston speed and damping force. 10: Hydraulic shock absorber, 12: Cylinder, 14: Piston, 16; Piston rod, 26: First passage, 28: Second passage, 32: Adjustment valve, 36
: third passage, 38: fourth passage, 42: case, 50, 52, 60: passage, 62: check valve.

Claims

[Scope of utility model registration request]

a cylinder; a piston slidably disposed within the cylinder and partitioning the interior of the cylinder into first and second fluid chambers; and a piston rod coupled to the piston that communicates with the first fluid chamber and has an axis. a piston rod having a first passage extending in a direction and a second passage extending from the passage toward an outer peripheral surface and opening into a second liquid chamber; a control rod disposed within the piston rod; a regulating valve disposed within the first liquid chamber and actuated by the control rod, the regulating valve having third and fourth passages communicating with the first passage and extending in the radial direction; A case is fixed to a portion of the piston rod located in the chamber, surrounding the adjustment valve, and is formed so as to communicate the third and fourth passages with the first liquid chamber, and when the piston rod is extended. 2nd passage via 4th passage
adjustment that prevents the flow of liquid from the first liquid chamber to the first liquid chamber, but allows the flow of liquid from the first liquid chamber to the second liquid chamber through the fourth passage when the piston rod is retracted. A check valve disposed inside the valve so as to be movable in the axial direction, the check valve having an inclined surface at a portion facing the fourth passage that receives an upward force from the liquid passing through the fourth passage; a hydraulic damper, wherein the regulating valve is capable of adjusting the flow rate of liquid flowing between the first liquid chamber and the second liquid chamber when the piston rod is extended and retracted.