JPH0339602U - - Google Patents
Info
- Publication number
- JPH0339602U JPH0339602U JP10140989U JP10140989U JPH0339602U JP H0339602 U JPH0339602 U JP H0339602U JP 10140989 U JP10140989 U JP 10140989U JP 10140989 U JP10140989 U JP 10140989U JP H0339602 U JPH0339602 U JP H0339602U
- Authority
- JP
- Japan
- Prior art keywords
- port
- spool
- output port
- pusher
- stepped hole
- 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
- 238000007796 conventional method Methods 0.000 description 1
Description
第１図は本考案の実施例を示すパイロツト弁の
縦断面図、第２図は従来技術を示すパイロツト弁
の縦断面図である。
１……ケーシング、３，３′……ポンプポート
、５……タンクポート、６，６′……ばね室、７
，７′……出力ポート、８……低圧室、９，９′
，１０，１０′……流路、１６，１６′……プツ
シヤ、２１，２１′……設定用ばね、２４……操
作杆、３１，３１′……スプール、３１Ｅ，３１
Ｅ′……段付穴、３２，３２′……段付ピストン
、３３，３３′……圧力室、３４，３４′……ダ
ンパ室、３５，３５′……絞り通路。
FIG. 1 is a longitudinal sectional view of a pilot valve showing an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of a pilot valve showing a conventional technique. 1... Casing, 3, 3'... Pump port, 5... Tank port, 6, 6'... Spring chamber, 7
, 7'...Output port, 8...Low pressure chamber, 9,9'
, 10, 10'... Channel, 16, 16'... Pusher, 21, 21'... Setting spring, 24... Operating rod, 31, 31'... Spool, 31E, 31
E'...Stepped hole, 32, 32'...Stepped piston, 33, 33'...Pressure chamber, 34, 34'...Damper chamber, 35, 35'... Throttle passage.
Claims (1)
を有するケーシングと、該ケーシング内に摺動変
位可能に設けられ、前記出力ポートをポンプポー
トとタンクポートとのいずれかに連通させるスプ
ールと、該スプールを摺動変位させるべく、操作
杆によつて押圧操作されるプツシヤと、該プツシ
ヤとスプールとの間に介装され、該プツシヤの押
圧操作量に応じて前記スプールによる出力ポート
側の圧力を設定する設定用ばねとからなる減圧弁
型パイロツト弁において、前記スプールの一端側
には有底の段付穴を形成し、かつ該段付穴には段
付ピストンを摺動可能に挿嵌し、該段付ピストン
によつて段付穴内には、前記出力ポートと連通す
る小径の圧力室と、前記タンクポートと絞り通路
を介して連通する大径のダンパ室とを画成したこ
とを特徴とする減圧弁型パイロツト弁。 a casing having a pump port, a tank port, and an output port; a spool disposed in the casing so as to be slidably displaceable and communicating the output port with either the pump port or the tank port; a pusher that is pressed by an operating rod, and a setting spring that is interposed between the pusher and the spool and sets the pressure on the output port side by the spool in accordance with the amount of the pusher's pressing operation. A pressure reducing type pilot valve comprising: a stepped hole with a bottom formed in one end side of the spool; a stepped piston is slidably inserted into the stepped hole; A pressure reducing valve type characterized in that a small diameter pressure chamber communicating with the output port and a large diameter damper chamber communicating with the tank port via a throttle passage are defined in the stepped hole. Pilot valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10140989U JPH0339602U (en) | 1989-08-30 | 1989-08-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10140989U JPH0339602U (en) | 1989-08-30 | 1989-08-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0339602U true JPH0339602U (en) | 1991-04-17 |
Family
ID=31650363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10140989U Pending JPH0339602U (en) | 1989-08-30 | 1989-08-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0339602U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101245574B1 (en) * | 2011-01-05 | 2013-03-20 | 주식회사 제일유압 | A joistic pilotvalve |
| CN104841548A (en) * | 2015-05-28 | 2015-08-19 | 南通振强机械制造有限公司 | High-strength sand washer |
| CN105170305A (en) * | 2015-09-02 | 2015-12-23 | 南通振强机械制造有限公司 | Wear-resisting sand washer |
-
1989
- 1989-08-30 JP JP10140989U patent/JPH0339602U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101245574B1 (en) * | 2011-01-05 | 2013-03-20 | 주식회사 제일유압 | A joistic pilotvalve |
| CN104841548A (en) * | 2015-05-28 | 2015-08-19 | 南通振强机械制造有限公司 | High-strength sand washer |
| CN105170305A (en) * | 2015-09-02 | 2015-12-23 | 南通振强机械制造有限公司 | Wear-resisting sand washer |
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