JPH01167907U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案に係る車高調整機構を備えたエ
アサスペンシヨンの断面図、第２図は本考案に係
るエアサスペンシヨンの別実施例を示す要部断面
図である。 尚、図面中、１はアウターチユーブ、２はシー
トパイプ、３はインナーチユーブ、４はピストン
ケース、２１はフリーピストン、２３は大径ピス
トン部、２５は小径ピストン部、２６は通孔、４
１は油圧回路、４７は車高検出器、４８は車高制
御回路、Ｓ１は油室、Ｓ２は大径ガス室、Ｓ３は
独立オイル室、Ｓ４は小径ガス室、Ｓ６は連通油
室である。 FIG. 1 is a cross-sectional view of an air suspension equipped with a vehicle height adjustment mechanism according to the present invention, and FIG. 2 is a cross-sectional view of essential parts showing another embodiment of the air suspension according to the present invention. In the drawings, 1 is an outer tube, 2 is a seat pipe, 3 is an inner tube, 4 is a piston case, 21 is a free piston, 23 is a large diameter piston part, 25 is a small diameter piston part, 26 is a through hole, 4
1 is a hydraulic circuit, 47 is a vehicle height detector, 48 is a vehicle height control circuit, S1 is an oil chamber, S2 is a large diameter gas chamber, S3 is an independent oil chamber, S4 is a small diameter gas chamber, and S6 is a communicating oil chamber. .

Claims (1)

【実用新案登録請求の範囲】 (1) 作動油とともにガスを封入したエアサスペ
ンシヨンにおいて、このサスペンシヨンのインナ
ーチユーブの上端部には大径のピストンケースを
設け、このピストンケース内にフリーピストンを
摺動自在に嵌装して大径ガス室と独立オイル室と
を画成し、大径ガス室はフリーピストンの軸部に
形成した通孔によつてインナーチユーブ上部のガ
ス室に連通し、更に車高を検出する車高検出手段
と、前記独立オイル室に対して作動油を供給及び
回収する油圧回路と、前記車高検出手段の検出結
果に基づいて油圧回路を制御する車高制御回路と
を設けたことを特徴とするエアサスペンシヨンの
車高調整機構。 (2) 作動油とともにガスを封入したエアサスペ
ンシヨンにおいて、このサスペンシヨンのアウタ
ーチユーブ外側にはピストンケースを設け、この
ピストンケース内にフリーピストンを摺動自在に
嵌装して連通油室と独立オイル室とを画成し、連
通油室はサスペンシヨン内油室に連通し、更に車
高を検出する車高検出手段と、前記独立オイル室
に対して作動油を供給及び回収する油圧回路と、
前記車高検出手段の検出結果に基づいて油圧回路
を制御する車高制御回路とを設けたことを特徴と
するエアサスペンシヨンの車高調整機構。[Scope of Claim for Utility Model Registration] (1) In an air suspension in which gas is sealed together with hydraulic oil, a large-diameter piston case is provided at the upper end of the inner tube of this suspension, and a free piston is mounted within this piston case. The free piston is slidably fitted to define a large-diameter gas chamber and an independent oil chamber, and the large-diameter gas chamber is communicated with the gas chamber at the upper part of the inner tube through a through hole formed in the shaft of the free piston. Furthermore, a vehicle height detection means for detecting vehicle height, a hydraulic circuit for supplying and recovering hydraulic oil to the independent oil chamber, and a vehicle height control circuit for controlling the hydraulic circuit based on the detection result of the vehicle height detection means. An air suspension vehicle height adjustment mechanism characterized by the following: (2) In an air suspension in which gas is sealed together with hydraulic oil, a piston case is provided on the outside of the outer tube of this suspension, and a free piston is slidably fitted into this piston case, making it independent from the communicating oil chamber. an oil chamber, the communicating oil chamber communicates with the suspension internal oil chamber, further comprising a vehicle height detection means for detecting vehicle height, and a hydraulic circuit for supplying and recovering hydraulic oil to and from the independent oil chamber. ,
A vehicle height adjustment mechanism for an air suspension, comprising a vehicle height control circuit that controls a hydraulic circuit based on the detection result of the vehicle height detection means.