JPS5983107U

JPS5983107U - Auto-leveling device for vehicles equipped with hydrodynamic suspension

Info

Publication number: JPS5983107U
Application number: JP14232483U
Authority: JP
Inventors: 藤井　昌幸
Original assignee: 日産自動車株式会社
Priority date: 1983-09-16
Filing date: 1983-09-16
Publication date: 1984-06-05

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本考案装置を具備する車両の懸架油圧系を示す
路線図、第２図は本考案に係るオートレベリングユニッ
トの縦断側面図、第３図は第２図のＡ−Ａ断面図、第４
図は第２図に示すオートレベリングユニットのユニット
ボデーを第２図のＢ−Ｂ線上で断面としての断面図、第
５図は第２図に示すオートレベリングユニットをアンチ
ロールバーに連系させる手段を例示する斜視図である。１・・・・・・車輪、２・・−−−−サスペンションメ
ンバー、４・・・・・・アンチロールバー、５・・・・
・・オイルリサーバ、６・・・・・・ポンプ、７・・・
・・・アンロード弁、８・曲・アキュムレータ、９・・
・・・・オートレベリングユニット、１０・・・・・・
油圧源管路、１１・・・・・・ドレン管、１２・・・・
・・連絡管路、１３・・・・・・ユニットボデー、１４
・・曲段付シリンダ孔、１５・・・・・・カム室、１６
・・・・・・ヘッドカバー、１８・・・・・・シャフト
カバー、２０・・・・・・第１ピストン、２１・・・・
・・第２ピストン、２２・・−ｉ１油室、２３・・・・
・・第２油室、２４・・・・・・連絡ポート、２６・・
・・・・シリンダポート、３１・・・・・・第１ばね、
３２・・・・・・第２ばね、３３・・・・・・カム、３
３ｂ。３３Ｃ，３３ｄ、　　３３ｅ−−−−−−カムプロフィ
ル、３４・・・・・・カムシャフト、３７−・・・・・
・ボール、４０・・・・・・ダッシュポット、４０ａ・
・・・・・ダッシュポット孔、４４・・・・・・開閉弁
、４５・・・・・・給油弁、４７・・・・・・排届弁、
４９・・・・・・給油ポート、５０・・・・・・排油ポ
ート、５４・・・・・・レバー、５５・・・・・・連結
棒、５６・・・・・・垂直ロッド、５７・・曲連結ブロ
ック、５９・曲・枢支ピン。Fig. 1 is a route diagram showing a suspension hydraulic system of a vehicle equipped with the device of the present invention, Fig. 2 is a vertical side view of the auto-leveling unit according to the present invention, Fig. 3 is a sectional view taken along line AA in Fig. 2, Fourth
The figure is a cross-sectional view of the unit body of the auto-leveling unit shown in FIG. 2 taken along line B-B in FIG. 2, and FIG. 5 is a means for connecting the auto-leveling unit shown in FIG. 2 to the anti-roll bar. FIG. 1...wheels, 2...suspension members, 4...anti-roll bars, 5...
...Oil reservoir, 6...Pump, 7...
・・・Unload valve, 8・Tune・Accumulator, 9・・
...Auto leveling unit, 10...
Hydraulic power source pipe line, 11... Drain pipe, 12...
...Connection pipe, 13...Unit body, 14
...Curved stepped cylinder hole, 15...Cam chamber, 16
...Head cover, 18...Shaft cover, 20...First piston, 21...
...Second piston, 22...-i1 oil chamber, 23...
...Second oil chamber, 24...Communication port, 26...
...Cylinder port, 31...First spring,
32...Second spring, 33...Cam, 3
3b. 33C, 33d, 33e---cam profile, 34---camshaft, 37------
・Ball, 40...Dashpot, 40a・
... Dashpot hole, 44 ... Opening/closing valve, 45 ... Fuel supply valve, 47 ... Discharge notification valve,
49... Oil supply port, 50... Oil drain port, 54... Lever, 55... Connecting rod, 56... Vertical rod, 57...Curve connection block, 59.Curve/pivot pin.

Claims

[Scope of utility model registration request]

The unit body, which is fixed to the vehicle body, has a cylinder port, an oil supply port, and an oil drain port to which the left and right hydropneumatic suspension units, which respectively constitute a part of the left and right wheel suspension systems, are commonly connected. A cam that rotates in response to changes in vehicle height, a first piston that operates according to the cam profile of the cam, and a second piston that opposes the first piston are provided in the unit body, and both pistons The first spring inserted between the
A second spring seated on the end face of the second piston on the opposite side of the seated spring supports the second piston in balance, and when the second piston is displaced by a predetermined distance or more in one direction, the second piston is opened and an oil supply valve that allows the cylinder port to communicate with the oil supply port; and an oil drain valve that opens when the second piston is displaced in the other direction by a predetermined distance or more and allows the cylinder port to communicate with the oil drain port, respectively. In the displacement region of the first piston that displaces the piston up to the predetermined distance in both directions, the cam largely displaces the first piston during its rotation, and before and after that, the cam displaces the first piston so that the first piston is not displaced even by the rotation of the cam. A feature is that the shape of the profile is selected, and a dashpot hole communicates between a first oil chamber that is located on both sides of the second piston and accommodates the first spring, and a second oil chamber that accommodates the second spring. Auto-leveling device for vehicles equipped with hydropneumatic suspension.