JPH01169405U

JPH01169405U -

Info

Publication number: JPH01169405U
Application number: JP6759788U
Authority: JP
Priority date: 1988-05-23
Filing date: 1988-05-23
Publication date: 1989-11-29

Description

[Brief explanation of the drawing]

第１図は本考案回路の一実施例を示す油圧回路
図、第２図は本考案回路の要部の作動状態を示す
回路図、第３図は本考案回路の他の実施例を示す
機構要部の回路図、第４図は従来周知のアクテイ
ブサスペンシヨン機構の一例を示す構成図、第５
図は上記周知のアクテイブサスペンシヨン機構に
おける制御回路の一例を示す油圧回路図、第６図
は上記制御回路における制御弁の一例を示す構成
図、第７図は上記制御弁におけるパイロツト回路
部の一例を示す要部の縦断側面図、第８図は前記
制御弁回路部の作動状態を示す回路図である。符号の説明、１……車体、２……車輪、４……
懸架スプリング、５……単動シリンダ、７……コ
ントローラ、８，８Ｒ，８Ｌ……制御弁、１３…
…供給管路、１７……戻り管路、２０……シヤツ
トバルブ、２１……固定絞り、２２……可変絞り
、２３……スプール、２４……パイロツト室、３
１，３３……チエツク弁、３２……絞り。 Fig. 1 is a hydraulic circuit diagram showing one embodiment of the circuit of the present invention, Fig. 2 is a circuit diagram showing the operating state of the main parts of the circuit of the present invention, and Fig. 3 is a mechanism showing another embodiment of the circuit of the present invention. Figure 4 is a circuit diagram of the main parts; Figure 4 is a configuration diagram showing an example of a conventionally known active suspension mechanism;
The figure is a hydraulic circuit diagram showing an example of a control circuit in the above-mentioned well-known active suspension mechanism, Fig. 6 is a configuration diagram showing an example of a control valve in the above-mentioned control circuit, and Fig. 7 is an example of a pilot circuit section in the above-mentioned control valve. FIG. 8 is a circuit diagram showing the operating state of the control valve circuit section. Explanation of symbols, 1...Vehicle body, 2...Wheels, 4...
Suspension spring, 5... Single acting cylinder, 7... Controller, 8, 8R, 8L... Control valve, 13...
...Supply pipe line, 17...Return pipe line, 20...Shut valve, 21...Fixed throttle, 22...Variable throttle, 23...Spool, 24...Pilot chamber, 3
1, 33...check valve, 32...throttle.

補正平１．８．２２実用新案登録請求の範囲を次のように補正する
。Amendment 1.8.22. The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】懸架スプリングと並置した単動シリンダの内圧
を制御することにより姿勢制御を図るアクテイブ
サスペンシヨンであつて、前記内圧制御のための
作動油の給排制御弁がパイロツト圧に応動し、か
つ、作動油の戻り管路の圧力の影響を受ける構成
からなる制御システムにおいて、前記車輛におけ
る左右一対の制御弁と作動油源側との接続を計る
車高保持用シヤツトバルブの制御弁側の各供給管
路と戻り管路とに夫々チエツク弁を設け、かつ、
これ等チエツク弁のいづれか一方に絞り管路を並
設してなることを特徴とするアクテイブサスペン
シヨンの油圧回路。[Claims for Utility Model Registration] An active suspension that achieves posture control by controlling the internal pressure of a single-acting cylinder arranged in parallel with a suspension spring, wherein the hydraulic oil supply and discharge control valve for controlling the internal pressure is a pilot. In a control system configured to respond to pressure and be influenced by the pressure of a hydraulic oil return line, a vehicle height maintenance shaft valve that connects a pair of left and right control valves and a hydraulic oil source in the vehicle is provided. A check valve is provided in each supply pipe and return pipe on the control valve side, and
A hydraulic circuit for an active suspension characterized by having a throttle line arranged in parallel on either side of these check valves.

Claims

[Scope of utility model registration request]

This is an active suspension that maintains the vehicle height by controlling the internal pressure of a single-acting cylinder arranged in parallel with a suspension spring, and the hydraulic oil supply/discharge control valve for controlling the internal pressure responds to pilot pressure and In a control system configured to be affected by the pressure of an oil return pipe, each supply pipe on the control valve side of a vehicle height maintenance shaft valve that connects a pair of left and right control valves in the vehicle with a hydraulic oil source side. and a return pipe are provided with check valves, and
A hydraulic circuit for an active suspension characterized by having a throttle line arranged in parallel on either side of these check valves.