JPH01157009U - - Google Patents
Info
- Publication number
- JPH01157009U JPH01157009U JP5419388U JP5419388U JPH01157009U JP H01157009 U JPH01157009 U JP H01157009U JP 5419388 U JP5419388 U JP 5419388U JP 5419388 U JP5419388 U JP 5419388U JP H01157009 U JPH01157009 U JP H01157009U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic pressure
- throttle
- control valve
- suspension unit
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000725 suspension Substances 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims 3
- 239000007788 liquid Substances 0.000 description 1
Landscapes
- Fluid-Damping Devices (AREA)
Description
図面は本考案実施例の液圧サスペンシヨン装置
を示す全体図である。
2……出力回路、3……圧力制御弁、4……切
換弁、42……バルブスプール、6……液圧供給
回路、7……ドレーン回路、8……アキユムレー
タ、a,b……絞り、10a〜10d……液圧シ
リンダ(サスペンシヨンユニツト)。
The drawing is an overall view of a hydraulic suspension device according to an embodiment of the present invention. 2... Output circuit, 3... Pressure control valve, 4... Switching valve, 42... Valve spool, 6... Liquid pressure supply circuit, 7... Drain circuit, 8... Accumulator, a, b... Throttle , 10a to 10d...hydraulic cylinder (suspension unit).
Claims (1)
て車高を変化させるサスペンシヨンユニツトと、 該サスペンシヨンユニツトに出力回路を介して
接続され、コントローラからの制御信号により作
動して、前記出力回路を液圧供給回路とドレーン
回路とに選択的に接続し、出力回路への出力液圧
を制御する圧力制御弁と、 前記出力回路の途中に配設されて圧力制御弁及
びサスペンシヨンユニツトに接続されると共に、
さらに液圧吸収可能なアキユムレータに接続され
て、かつ、出力回路において、圧力制御弁側の液
圧が高い場合には、サスペンシヨンユニツトとア
キユムレータ側との連通を制限すると共に、圧力
制御弁との連通をより許容し、サスペンシヨンユ
ニツト側の液圧が高い場合には、サスペンシヨン
ユニツトと圧力制御弁との連通を制限すると共に
、アキユムレータ側との連通をより許容させるべ
く作動する切換弁と、 を備えていることを特徴とする液圧サスペンシヨ
ン装置。 2 前記切換弁が、バルブ穴に摺動可能に設けら
れて、出力回路の途中に絞りを形成するバルブス
プールを有し、かつ、該バルブスプールの一端が
絞りより上流の液圧を受圧すると共に他端が絞り
より下流の液圧を受圧し、絞り上流の液圧が絞り
下流の液圧より高いときのバルブスプールのスト
ロークにより、サスペンシヨンユニツトから圧力
制御弁への絞りを開放側にし、アキユムレータと
の連通をより制限し、絞り下流の液圧が絞り上流
の液圧よりも高いときのバルブスプールのストロ
ークにより、サスペンシヨンユニツトから圧力制
御弁への絞りを閉成側とし、アキユムレータへの
連通をより大きくさせるべく形成されている請求
項1記載の液圧サスペンシヨン装置。[Scope of Utility Model Registration Claims] 1. A suspension unit that is disposed between the vehicle body and the axle and is operated by hydraulic pressure to change the vehicle height; a pressure control valve that is operated by a control signal to selectively connect the output circuit to a hydraulic pressure supply circuit and a drain circuit to control output hydraulic pressure to the output circuit; and a pressure control valve disposed in the middle of the output circuit. is connected to the pressure control valve and suspension unit, and
Furthermore, if the suspension unit is connected to an accumulator capable of absorbing hydraulic pressure and the hydraulic pressure on the pressure control valve side is high in the output circuit, communication between the suspension unit and the accumulator side is restricted, and communication with the pressure control valve is restricted. a switching valve that operates to allow more communication and to restrict communication between the suspension unit and the pressure control valve when the hydraulic pressure on the suspension unit side is high, and to allow more communication with the accumulator side; A hydraulic suspension device comprising: 2. The switching valve has a valve spool that is slidably provided in the valve hole and forms a throttle in the middle of the output circuit, and one end of the valve spool receives hydraulic pressure upstream of the throttle. The other end receives the hydraulic pressure downstream of the throttle, and when the hydraulic pressure upstream of the throttle is higher than the hydraulic pressure downstream of the throttle, the stroke of the valve spool causes the throttle from the suspension unit to the pressure control valve to open, and the accumulator By stroking the valve spool when the hydraulic pressure downstream of the throttle is higher than the hydraulic pressure upstream of the throttle, the throttle from the suspension unit to the pressure control valve is on the closing side, and communication to the accumulator is increased. 2. The hydraulic suspension device according to claim 1, wherein the hydraulic suspension device is configured to have a larger value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5419388U JPH01157009U (en) | 1988-04-22 | 1988-04-22 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5419388U JPH01157009U (en) | 1988-04-22 | 1988-04-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01157009U true JPH01157009U (en) | 1989-10-30 |
Family
ID=31280129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5419388U Pending JPH01157009U (en) | 1988-04-22 | 1988-04-22 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01157009U (en) |
-
1988
- 1988-04-22 JP JP5419388U patent/JPH01157009U/ja active Pending