JPS62126639U

JPS62126639U -

Info

Publication number: JPS62126639U
Application number: JP1476086U
Authority: JP
Priority date: 1986-02-04
Filing date: 1986-02-04
Publication date: 1987-08-11
Also published as: JPH0331869Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る油圧緩衝器を
部分的に示す縦断面図、第２図ａおよび第２図ｂ
はそれぞれオリフイスの穿設位置の他の実施例を
部分的に拡大して示す縦断面図、第３図は従来例
としての油圧緩衝器を第１図と同様に示す縦断面
図である。１……シリンダ、２……ピストン部、３……ピ
ストンロツド、３ａ，３ｂ……連通孔、４……コ
ントロールバルブ、４ａ，４ｂ……ポート、ｂ…
…チエツク弁、７……リーフバルブ、８，８ａ，
８ｂ……オリフイス、３０……シート部材、３０
ａ……ポート、３０ｂ……シート部、６０……ノ
ンリタンバルブ、６１……ノンリタンスプリング
、Ａ……伸側部、Ｂ……圧側室、Ｌ……側路、Ｌ
ａ……伸側流れを可とする側路部分、Ｌｂ……圧
側流れを可とする側路部分、ｌ……通路。 FIG. 1 is a vertical sectional view partially showing a hydraulic shock absorber according to an embodiment of the present invention, FIG. 2 a and FIG. 2 b
3 is a partially enlarged longitudinal sectional view showing another embodiment of the orifice drilling position, and FIG. 3 is a longitudinal sectional view showing a conventional hydraulic shock absorber similar to FIG. 1. DESCRIPTION OF SYMBOLS 1... Cylinder, 2... Piston part, 3... Piston rod, 3a, 3b... Communication hole, 4... Control valve, 4a, 4b... Port, b...
...Check valve, 7...Leaf valve, 8, 8a,
8b... Orifice, 30... Sheet member, 30
a... Port, 30b... Seat part, 60... Non-return valve, 61... Non-return spring, A... Rebound side part, B... Compression side chamber, L... Side passage, L
a... Side channel portion that allows growth side flow, Lb... Side channel portion that allows compression side flow, l... Passage.

Claims

[Claims for Utility Model Registration] (1) A side passage is formed in the piston rod to enable communication between the expansion side chamber and the compression side chamber defined in the cylinder by the piston portion, and the side passage It has a rotatable control valve therein that can adjust the damping force generated when the piston part slides, and a check valve for blocking pressure side flow is disposed inside the control valve, and A hydraulic shock absorber characterized in that a leaf valve is disposed in the side passage portion on the pressure side of the side passage, and a suitable orifice is disposed in the side passage portion that allows the pressure side flow. . (2) A utility model registration request consisting of a non-return valve that is arranged such that a check valve that blocks pressure side flow closes the opening of a passage in the control valve, and a non-return spring that energizes the non-return valve. Hydraulic shock absorber according to scope 1. (3) The control valve has two stages of upper and lower ports with different diameters, and the ports of each stage connect to the upper and lower two stages of communication holes drilled in the radial direction of the piston rod when the control valve rotates. The hydraulic shock absorber according to claim 1, which is formed so as to be selectively opposed to each other. (4) The utility model registered in claim 1, wherein the orifice is interposed on the outer periphery of the piston rod and is formed so as to penetrate through the thick part of the sheet member constituting the bypass portion that allows pressure side flow. Hydraulic buffer. (5) Registration of a utility model in which the orifice is interposed on the outer periphery of the piston rod and is formed as a stamped orifice in the seat part of the seat member, which constitutes a bypass portion that allows pressure-side flow and is provided with a leaf valve. A hydraulic shock absorber according to claim 1. (6) Hydraulic pressure according to claim 1, wherein the orifice is formed in a leaf valve disposed in a seat member that constitutes a bypass portion that allows pressure side flow and is interposed on the outer periphery of the piston rod. buffer.