JPH0198977U - - Google Patents
Info
- Publication number
- JPH0198977U JPH0198977U JP19607887U JP19607887U JPH0198977U JP H0198977 U JPH0198977 U JP H0198977U JP 19607887 U JP19607887 U JP 19607887U JP 19607887 U JP19607887 U JP 19607887U JP H0198977 U JPH0198977 U JP H0198977U
- Authority
- JP
- Japan
- Prior art keywords
- spool
- oil
- chamber
- orifice
- cylindrical body
- 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
Landscapes
- Safety Valves (AREA)
- Details Of Valves (AREA)
Description
第１図は本考案の一実施例を示す縦断面図、第
２図は第１図の一部を拡大して示す図、第３図は
第２の実施例の要部を示す縦断面図、第４図は第
３の実施例の縦断面図、第５図は従来のアンロー
デイングバルブの一例を示す縦断面図である。
６…バルブ孔、８…供給通路、２０…スプール
、２６…オリフイス下流側の室、４０…オリフイ
ス、１００…筒体、１０２…摺動体（円筒部材）
、１０８…チエツクバルブ（ボール）。
Fig. 1 is a longitudinal sectional view showing one embodiment of the present invention, Fig. 2 is an enlarged view of a part of Fig. 1, and Fig. 3 is a longitudinal sectional view showing the main part of the second embodiment. , FIG. 4 is a longitudinal sectional view of the third embodiment, and FIG. 5 is a longitudinal sectional view showing an example of a conventional unloading valve. 6... Valve hole, 8... Supply passage, 20... Spool, 26... Orifice downstream chamber, 40... Orifice, 100... Cylindrical body, 102... Sliding body (cylindrical member)
, 108...Check valve (ball).
Claims (1)
するバルブ孔内に配設されたスプールの両端面に
、スプールに形成されたオリフイスの前後の差圧
を作用させてこのスプールを作動させ、ポンプか
ら吐出されたオイルをタンクへ還流させるアンロ
ーデイングバルブにおいて、上記バルブ孔内のオ
リフイス下流側の室内に、この室の端面に固定さ
れた筒体と、この筒体内に摺動自在に嵌合され、
上記スプールの作動時にスプールによつて押圧移
動させる摺動体とを配設し、この摺動体が移動し
たときに上記筒体内のオイルを両者の間隙からオ
リフイス下流側の室内に漏洩可能にするとともに
、上記筒体内のオイルの流出を阻止するチエツク
バルブを設けたことを特徴とするアンローデイン
グバルブ。 The differential pressure between the front and back of the orifice formed in the spool is applied to both end faces of the spool, which is installed in the valve hole that connects to the supply passage for oil discharged from the pump, and the spool is actuated, causing oil to be discharged from the pump. In the unloading valve for returning the oil to the tank, a cylindrical body is fixed to an end face of the chamber in a chamber on the downstream side of the orifice in the valve hole, and a cylindrical body is slidably fitted into the cylindrical body,
a sliding body that is pressed and moved by the spool when the spool is activated, and when the sliding body moves, the oil in the cylinder can leak from the gap between the two into a chamber downstream of the orifice; An unloading valve characterized in that a check valve is provided to prevent oil from flowing out of the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19607887U JPH0198977U (en) | 1987-12-24 | 1987-12-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19607887U JPH0198977U (en) | 1987-12-24 | 1987-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0198977U true JPH0198977U (en) | 1989-07-03 |
Family
ID=31486719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19607887U Pending JPH0198977U (en) | 1987-12-24 | 1987-12-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0198977U (en) |
-
1987
- 1987-12-24 JP JP19607887U patent/JPH0198977U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0198977U (en) | ||
| JPH0198376U (en) | ||
| JPH0471801U (en) | ||
| JPS59105005U (en) | hydraulic lifter | |
| JPH0317301U (en) | ||
| JPH047985U (en) | ||
| JPS59126759U (en) | Two-stage master cylinder | |
| JPS6282268U (en) | ||
| JPH0381185U (en) | ||
| JPS6150056U (en) | ||
| JPS5988598U (en) | metering type distribution valve | |
| JPH0248469U (en) | ||
| JPS59190663U (en) | master cylinder | |
| JPS63190604U (en) | ||
| JPS6165360U (en) | ||
| JPS63132104U (en) | ||
| JPH03130772U (en) | ||
| JPS58114961U (en) | flow control valve | |
| JPS5824502U (en) | Hydraulic cylinder cushioning device | |
| JPS6394862U (en) | ||
| JPS6248869U (en) | ||
| JPH0195594U (en) | ||
| JPS6165359U (en) | ||
| JPS61161073U (en) | ||
| JPS58195161U (en) | check valve |