JPS60154673U - relief valve - Google Patents

relief valve

Info

Publication number
JPS60154673U
JPS60154673U JP4179884U JP4179884U JPS60154673U JP S60154673 U JPS60154673 U JP S60154673U JP 4179884 U JP4179884 U JP 4179884U JP 4179884 U JP4179884 U JP 4179884U JP S60154673 U JPS60154673 U JP S60154673U
Authority
JP
Japan
Prior art keywords
relief valve
pressure
compression spring
pump port
facing
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
JP4179884U
Other languages
Japanese (ja)
Other versions
JPH0310442Y2 (en
Inventor
謙治 織田
Original Assignee
株式会社小松製作所
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 by 株式会社小松製作所 filed Critical 株式会社小松製作所
Priority to JP4179884U priority Critical patent/JPS60154673U/en
Publication of JPS60154673U publication Critical patent/JPS60154673U/en
Application granted granted Critical
Publication of JPH0310442Y2 publication Critical patent/JPH0310442Y2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図面はこの考案の一実施例を示す断面図である。 １はリリーフ弁本体、１□はポンプポート、１２はドレ
ンポート、２は圧縮ばね、３はスプール、３ｂ、３ｄは
圧力室、６は小径ピストン、７は大径ピストン、１０は
切換え弁。The drawing is a sectional view showing an embodiment of this invention. 1 is a relief valve main body, 1□ is a pump port, 12 is a drain port, 2 is a compression spring, 3 is a spool, 3b and 3d are pressure chambers, 6 is a small diameter piston, 7 is a large diameter piston, and 10 is a switching valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] リリーフ弁本体１内に圧縮ばね２により一方向へ付勢さ
れたスプール３を設けて、ポンプポート１□とドレンポ
ート１□の間を開閉自在に遮断し、また上記スプール３
の圧縮ばね２と反対側の端部内に径の異なる複数個の小
径ピストン６及び大径ピストン７を、圧縮ばね２側端部
が圧力室３ｂ、３ｄに臨むように収容すると共に、小径
ピストン６の端部が臨む圧力室３ｂ内にポンプポート１
□の圧力を、そして大径ピストン７が臨む圧力室３ｃ内
に切換え弁１０を介してポンプポート１□側の圧力をそ
れぞれ導入してなるリリーフ弁。A spool 3 biased in one direction by a compression spring 2 is provided in the relief valve body 1 to freely open and close between the pump port 1 □ and the drain port 1 □.
A plurality of small-diameter pistons 6 and large-diameter pistons 7 having different diameters are accommodated in the end opposite to the compression spring 2 so that the end on the compression spring 2 side faces the pressure chambers 3b and 3d, and the small-diameter piston 6 Pump port 1 is located in pressure chamber 3b facing the end of
A relief valve that introduces the pressure of □ and the pressure of the pump port 1 □ side through the switching valve 10 into the pressure chamber 3c facing the large diameter piston 7.
JP4179884U 1984-03-26 1984-03-26 relief valve Granted JPS60154673U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4179884U JPS60154673U (en) 1984-03-26 1984-03-26 relief valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4179884U JPS60154673U (en) 1984-03-26 1984-03-26 relief valve

Publications (2)

Publication Number Publication Date
JPS60154673U true JPS60154673U (en) 1985-10-15
JPH0310442Y2 JPH0310442Y2 (en) 1991-03-14

Family

ID=30551959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4179884U Granted JPS60154673U (en) 1984-03-26 1984-03-26 relief valve

Country Status (1)

Country Link
JP (1) JPS60154673U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011208651A (en) * 2010-03-26 2011-10-20 Aisin Seiki Co Ltd Relief valve with relief pressure changing function
JP2011208652A (en) * 2010-03-26 2011-10-20 Aisin Seiki Co Ltd Relief valve with relief pressure changing function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011208651A (en) * 2010-03-26 2011-10-20 Aisin Seiki Co Ltd Relief valve with relief pressure changing function
JP2011208652A (en) * 2010-03-26 2011-10-20 Aisin Seiki Co Ltd Relief valve with relief pressure changing function

Also Published As

Publication number Publication date
JPH0310442Y2 (en) 1991-03-14

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