JPH0224136U

JPH0224136U -

Info

Publication number: JPH0224136U
Application number: JP10217588U
Authority: JP
Priority date: 1988-08-01
Filing date: 1988-08-01
Publication date: 1990-02-16
Anticipated expiration: 2003-05-17
Also published as: JPH0518507Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す懸架装置のシ
ール部の縦断面図、第２図は第１図に示されたシ
ール部を内蔵する懸架装置の縦断面図、第３図は
第１図中の軸受部材におけるラビリンス溝の拡大
断面図、第４図は第１図中の弾性シール材の断面
図、第５図は第１図中の軸受部材とロツドとの関
係を概念的に示す正面図、第６図はｏリングの圧
力と摩擦抵抗の関係を示す図である。１……気液圧式懸架装置、２……シリンダ、３
……ロツド、２０……気室、２１ａ，２１ｂ……
液室、２５……シール手段、３０……減衰力発生
部、４２……液圧ユニツト、４５……軸受部材、
５０……ラビリンス溝、５１……軸受隙間、５３
……弾性シール材、５４……シールボデイ、５６
……内周側部分、５７……外周側部分、５９……
スプリング収容溝、６２……ドレン回収用流通部
。 FIG. 1 is a vertical cross-sectional view of a seal portion of a suspension system showing an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of a suspension system incorporating the seal portion shown in FIG. 1, and FIG. FIG. 4 is an enlarged sectional view of the labyrinth groove in the bearing member in FIG. 1, FIG. 4 is a sectional view of the elastic seal material in FIG. 1, and FIG. 5 conceptually shows the relationship between the bearing member and the rod in FIG. 1. The front view shown in FIG. 6 is a diagram showing the relationship between pressure and frictional resistance of the O-ring. 1...Air-hydraulic suspension system, 2...Cylinder, 3
... Rod, 20... Air chamber, 21a, 21b...
Liquid chamber, 25... Sealing means, 30... Damping force generating section, 42... Hydraulic pressure unit, 45... Bearing member,
50... Labyrinth groove, 51... Bearing gap, 53
...Elastic sealing material, 54...Seal body, 56
... Inner circumference side part, 57 ... Outer circumference side part, 59 ...
Spring accommodation groove, 62...Drain recovery circulation section.

Claims

[Claims for Utility Model Registration] (1) A cylinder with a liquid chamber filled with hydraulic fluid, and a cylinder that is movably inserted in the axial direction of the cylinder, with one end located inside the cylinder and the other end outside the cylinder. a hydraulic unit connected to the liquid chamber and capable of supplying hydraulic fluid to the liquid chamber; and a seal provided at the portion where the cylinder and rod move to seal the inside and outside of the cylinder. In the vehicle suspension system, the upper sealing means is a bearing having a circumferential labyrinth groove on the side opposite to the circumferential surface of the rod and allowing hydraulic fluid to flow between the upper sealing means and the circumferential surface of the rod. A bearing member forming a gap, an elastic sealing material provided on a lower pressure side than the bearing gap and having an inner circumferential surface in close contact with the circumferential surface of the rod over the entire circumference, and the elastic sealing material and the bearing member. 1. A suspension system for a vehicle, comprising: a drain recovery circulation section that communicates between the vehicular suspension system and the drain recovery circulation section. (2) The vehicle suspension system according to claim 1, wherein the bearing member having the labyrinth groove is made of aluminum bronze. (3) The elastic sealing material is a synthetic resin seal having an inner circumferential side that slides on the rod, an outer circumferential side located outside the inner circumferential side, and a spring housing groove located between these two parts. 2. The vehicle suspension system according to claim 1, comprising: a body; and a spring having a substantially v-shaped cross-section that is housed in the groove of the seal body and biases the inner circumferential side portion and the outer circumferential side portion in a direction to spread them apart. .