JPH0385208U - - Google Patents
Info
- Publication number
- JPH0385208U JPH0385208U JP14761789U JP14761789U JPH0385208U JP H0385208 U JPH0385208 U JP H0385208U JP 14761789 U JP14761789 U JP 14761789U JP 14761789 U JP14761789 U JP 14761789U JP H0385208 U JPH0385208 U JP H0385208U
- Authority
- JP
- Japan
- Prior art keywords
- oil passage
- vehicle height
- check valve
- height adjustment
- oil
- 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
- 239000003921 oil Substances 0.000 claims 18
- 230000002457 bidirectional effect Effects 0.000 claims 3
- 239000010720 hydraulic oil Substances 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 1
Description
図面はこの考案の最適な一実施例に係る車高調
整装置を示す構成図である。
符号の説明、Ｂ……車体、Ｃ２……チエツク弁
、ＬＬ……下方油路、ＬＮ……中間油路、ＬＳ…
…上方油路、ＰＷ……油圧源、ｐｌ，ｐｕ……パ
イロツト通路、Ｓ……車高調整用シリンダ、Ｓ１
……ピストン部、Ｓ２……ロツド側油室、Ｓ３…
…ピストン側油室、Ｔ……タンク、Ｖ１，Ｖ２…
…切換弁、Ｖ１ａ，Ｖ２ａ……ソレノイド、Ｖ１
ｂ，Ｖ２ｂ……供給ポジシヨン、Ｖ１ｃ，Ｖ２ｃ
……スプリング、Ｖ１ｄ，Ｖ２ｄ……遮断ポジシ
ヨン、ＶＬ，ＶＵ……オペレートチエツク弁。
The drawing is a configuration diagram showing a vehicle height adjustment device according to a preferred embodiment of this invention. Explanation of symbols, B...Vehicle body, C2...Check valve, LL...Lower oil passage, LN...Intermediate oil passage, LS...
...Upper oil passage, PW...Hydraulic pressure source, pl, pu...Pilot passage, S...Vehicle height adjustment cylinder, S1
...Piston part, S2...Rod side oil chamber, S3...
...Piston side oil chamber, T...Tank, V1, V2...
...Switching valve, V1a, V2a...Solenoid, V1
b, V2b...supply position, V1c, V2c
... Spring, V1d, V2d ... Shutoff position, VL, VU ... Operate check valve.
Claims (1)
れる車高調整用シリンダと、該車高調整用シリン
ダ内のロツド側油室に連通される上方油路と、上
記車高調整用シリンダ内のピストン側油室に連通
される下方油路と、上記車高調整用シリンダ内で
摺動するピストン部のストローク中間位置で該車
高調整用シリンダ内に連通される中間油路と、上
記上方油路中に配設され外部操作力の供給時に上
記ロツド側油室からの作動油の流出を可能にする
オペレートチエツク弁と、上記下方油路中に配設
され外部操作力の供給時に上記ピストン側油室か
らの作動油の流出を可能にするオペレートチエツ
ク弁と、上記下方油路に接続され両方向ポンプか
らなる油圧源と、を有してなる車高調整装置にお
いて、上方油路の端部が下方油路に接続されてな
ると共に、該上方油路に中間油路の端部が接続さ
れてなり、かつ、上記下方油路のタンク側端部に
は該下方油路を介してのタンク側への作動油の流
通を阻止するチエツク弁が配設されてなり、さら
に、上記上方油路中のオペレートチエツク弁には
上記両方向ポンプの正転時に切換弁を介して外部
操作力としてのパイロツト油圧が供給されると共
に、上記下方油路中のオペレートチエツク弁には
上記両方向ポンプの逆転時に切換弁を介して外部
操作力としてのパイロツト油圧が供給されるよう
に形成されてなることを特徴とする車高調整装置
。 A vehicle height adjustment cylinder whose upper end is connected to the vehicle body side and whose lower end is connected to the axle side, an upper oil passage communicating with a rod side oil chamber in the vehicle height adjustment cylinder, and an inside of the vehicle height adjustment cylinder. a lower oil passage communicating with the piston-side oil chamber of the vehicle height adjusting cylinder; an intermediate oil passage communicating with the vehicle height adjusting cylinder at an intermediate stroke position of the piston portion sliding within the vehicle height adjusting cylinder; An operating check valve is disposed in the oil passage and allows hydraulic oil to flow out from the rod side oil chamber when an external operating force is supplied; In a vehicle height adjustment device comprising an operation check valve that allows hydraulic oil to flow out from a side oil chamber, and a hydraulic power source consisting of a bidirectional pump connected to the lower oil passage, the end of the upper oil passage is connected to the lower oil passage, and the end of the intermediate oil passage is connected to the upper oil passage, and the tank side end of the lower oil passage is connected to the tank via the lower oil passage. A check valve is provided in the upper oil passage to prevent the flow of hydraulic oil to the side, and the pilot check valve in the upper oil passage receives a pilot force as an external operating force via a switching valve when the bidirectional pump rotates in the normal direction. The hydraulic pressure is supplied to the operating check valve in the lower oil passage, and the pilot hydraulic pressure is supplied as an external operating force via a switching valve when the bidirectional pump is reversed. Vehicle height adjustment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14761789U JPH0385208U (en) | 1989-12-21 | 1989-12-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14761789U JPH0385208U (en) | 1989-12-21 | 1989-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0385208U true JPH0385208U (en) | 1991-08-29 |
Family
ID=31694123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14761789U Pending JPH0385208U (en) | 1989-12-21 | 1989-12-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0385208U (en) |
-
1989
- 1989-12-21 JP JP14761789U patent/JPH0385208U/ja active Pending
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