JPH0330604U - - Google Patents

Info

Publication number
JPH0330604U
JPH0330604U JP9233789U JP9233789U JPH0330604U JP H0330604 U JPH0330604 U JP H0330604U JP 9233789 U JP9233789 U JP 9233789U JP 9233789 U JP9233789 U JP 9233789U JP H0330604 U JPH0330604 U JP H0330604U
Authority
JP
Japan
Prior art keywords
spool
pressure
spring
chamber
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.)
Granted
Application number
JP9233789U
Other languages
English (en)
Other versions
JPH0529521Y2 (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 JP1989092337U priority Critical patent/JPH0529521Y2/ja
Publication of JPH0330604U publication Critical patent/JPH0330604U/ja
Application granted granted Critical
Publication of JPH0529521Y2 publication Critical patent/JPH0529521Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Servomotors (AREA)
  • Safety Valves (AREA)

Description

【図面の簡単な説明】
第１図は本考案の実施例の縦断面図、第２図は
同プツシユロツドのストロークと出力圧力との関
係を示す図表、第３図は従来品の縦断面図である
。 １……弁本体、６……操作レバー、１２……プ
ツシユロツド、１４……スプール、２２……ばね
、２６……圧力室、２７……出力室、３２……切
欠溝、３５……ピストン、３８……第３のばね、
３９……第３の流体室、４０……切換弁、４４…
…開閉弁。

Claims (1)

  1. 【実用新案登録請求の範囲】 １ 操作レバーと、弁本体に嵌挿され且つ操作レ
    バーと連動するプツシユロツドと、プツシユロツ
    ドに進退可能に取付けられ且つプツシユロツドの
    押込み方向の動きがばねを介して伝達されるスプ
    ールと、スプールの切欠溝が位置する出力室と、
    スプールの動きで出力室との連通状態が変わる圧
    力室を含むパイロツト弁において、前記切欠溝両
    側の受圧面積を違えて前記ばね側を大となし、且
    つ弁本体内にはピストンを備える第３の流体室と
    この流体室に流体圧力とドレン圧力を交互に導く
    切換弁を設け、第３の流体室の流体圧力と前記ば
    ねとをピストン、スプールを介して対抗せしめた
    ことを特徴とするパイロツト弁。 ２ 第３の流体室に所定プリセツト荷重でピスト
    ンをスプールから離間する方向へ押付ける第３の
    ばねを設けた請求項１記載のパイロツト弁。 ３ 複数切換弁をパイロツト圧で一括切換制御す
    るための開閉弁を備えた請求項１又は２記載のパ
    イロツト弁。
JP1989092337U 1989-08-04 1989-08-04 Expired - Lifetime JPH0529521Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989092337U JPH0529521Y2 (ja) 1989-08-04 1989-08-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989092337U JPH0529521Y2 (ja) 1989-08-04 1989-08-04

Publications (2)

Publication Number Publication Date
JPH0330604U true JPH0330604U (ja) 1991-03-26
JPH0529521Y2 JPH0529521Y2 (ja) 1993-07-28

Family

ID=31641772

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989092337U Expired - Lifetime JPH0529521Y2 (ja) 1989-08-04 1989-08-04

Country Status (1)

Country Link
JP (1) JPH0529521Y2 (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6095202A (ja) * 1983-10-29 1985-05-28 Hitachi Constr Mach Co Ltd パイロツトバルブ
JPS61119677U (ja) * 1985-01-14 1986-07-28

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6095202A (ja) * 1983-10-29 1985-05-28 Hitachi Constr Mach Co Ltd パイロツトバルブ
JPS61119677U (ja) * 1985-01-14 1986-07-28

Also Published As

Publication number Publication date
JPH0529521Y2 (ja) 1993-07-28

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