JPS6154501U - - Google Patents

Info

Publication number
JPS6154501U
JPS6154501U JP13911184U JP13911184U JPS6154501U JP S6154501 U JPS6154501 U JP S6154501U JP 13911184 U JP13911184 U JP 13911184U JP 13911184 U JP13911184 U JP 13911184U JP S6154501 U JPS6154501 U JP S6154501U
Authority
JP
Japan
Prior art keywords
spool
side port
valve body
oil
pressure control
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.)
Granted
Application number
JP13911184U
Other languages
English (en)
Other versions
JPH0329649Y2 (ja
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1984139111U priority Critical patent/JPH0329649Y2/ja
Publication of JPS6154501U publication Critical patent/JPS6154501U/ja
Application granted granted Critical
Publication of JPH0329649Y2 publication Critical patent/JPH0329649Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Safety Valves (AREA)
  • Fluid-Pressure Circuits (AREA)

Description

【図面の簡単な説明】
第1図および第2図は本考案に係り、第1図は
本実施例による圧力制御弁の縦断面図、第2図は
従来技術との比較において示したスプールストロ
ーク−油路断面積を示す線図、第3図および第4
図は従来技術に係り、第3図はブレーキ弁を示す
油圧回路図、第4図は第3図のブレーキ弁に用い
られる圧力制御弁の縦断面図である。 11…圧力制御弁、12…弁本体、13A,1
3B…油圧源側ポート、14A,14B…アクチ
ユエータ側ポート、15…スプール摺動穴、16
A,16B,17A,17B…油溝、19A,1
9B…油室、20…スプール、21,22A,2
2B,23A,23B…ランド、24A,24B
…ストツパ、25A,25B…ばね、26A,2
6B…絞り通路、27A,27B,28A,28
B…油路、31A,31B…テーパ状外周溝、3
2A,32B…環状外周溝。

Claims (1)

    【実用新案登録請求の範囲】
  1. 油圧源側ポートとアクチユエータ側ポートとを
    有する弁本体と、該弁本体内に摺動可能に設けら
    れ、前記各ポートを切換えるスプールと、該スプ
    ールの両端側に位置して前記弁本体に形成され、
    前記油圧源側ポートからの圧油が導びかれる油室
    と、該各油室内に設けられ前記スプールを中立位
    置に付勢するばねとから構成してなる圧力制御弁
    において、前記スプールの両端外周面には外周溝
    を形成し、前記スプールの最大ストローク位置か
    ら中立位置への復帰を早めるように構成したこと
    を特徴とする圧力制御弁。
JP1984139111U 1984-09-13 1984-09-13 Expired JPH0329649Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1984139111U JPH0329649Y2 (ja) 1984-09-13 1984-09-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984139111U JPH0329649Y2 (ja) 1984-09-13 1984-09-13

Publications (2)

Publication Number Publication Date
JPS6154501U true JPS6154501U (ja) 1986-04-12
JPH0329649Y2 JPH0329649Y2 (ja) 1991-06-24

Family

ID=30697492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984139111U Expired JPH0329649Y2 (ja) 1984-09-13 1984-09-13

Country Status (1)

Country Link
JP (1) JPH0329649Y2 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02102078U (ja) * 1989-01-31 1990-08-14
WO1996012110A1 (en) * 1994-10-18 1996-04-25 Komatsu Ltd. Counter-balance valve
JP2006017263A (ja) * 2004-07-05 2006-01-19 Nabtesco Corp キャビテーション防止油圧回路

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5594068A (en) * 1979-01-08 1980-07-17 Hitachi Constr Mach Co Ltd Hydraulic pressure control valve
JPS57186677A (en) * 1981-05-13 1982-11-17 Hitachi Constr Mach Co Ltd Counterbalance valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5594068A (en) * 1979-01-08 1980-07-17 Hitachi Constr Mach Co Ltd Hydraulic pressure control valve
JPS57186677A (en) * 1981-05-13 1982-11-17 Hitachi Constr Mach Co Ltd Counterbalance valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02102078U (ja) * 1989-01-31 1990-08-14
WO1996012110A1 (en) * 1994-10-18 1996-04-25 Komatsu Ltd. Counter-balance valve
US6068013A (en) * 1994-10-18 2000-05-30 Komatsu Ltd. Counter balance valve
JP2006017263A (ja) * 2004-07-05 2006-01-19 Nabtesco Corp キャビテーション防止油圧回路
JP4633393B2 (ja) * 2004-07-05 2011-02-16 ナブテスコ株式会社 キャビテーション防止油圧回路

Also Published As

Publication number Publication date
JPH0329649Y2 (ja) 1991-06-24

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