JPH0465292U - - Google Patents

Info

Publication number
JPH0465292U
JPH0465292U JP10941190U JP10941190U JPH0465292U JP H0465292 U JPH0465292 U JP H0465292U JP 10941190 U JP10941190 U JP 10941190U JP 10941190 U JP10941190 U JP 10941190U JP H0465292 U JPH0465292 U JP H0465292U
Authority
JP
Japan
Prior art keywords
valve
orifice
passage
communicates
hydraulic jack
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
JP10941190U
Other languages
Japanese (ja)
Other versions
JP2524499Y2 (en
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 JP1990109411U priority Critical patent/JP2524499Y2/en
Publication of JPH0465292U publication Critical patent/JPH0465292U/ja
Application granted granted Critical
Publication of JP2524499Y2 publication Critical patent/JP2524499Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

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

Description

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

第１図はプツシユ式リリーズ機構部分の断面図
、第２図は要部断面図、第３図ａはフート式油圧
ジヤツキの断面図、同図ｂは第３図ｂのＢ−Ｂ線
断面図、第４図〜第５図は従来例のジヤツキの断
面図、要部断面図、第６図は第４図のＡ−Ａ線断
面図である。 符合の説明、１……オイルタンク室、３……ポ
ンプピストン、５……ヨーク、６……吐出弁、７
……シリンダ室、Ｒ……プツシユ式リリーズ機構
、１０……リリーズバルブボデイ、１１……ヨー
ク側スチールボール、１２……バルブピン、１３
……オリフイス、１４……バルブガイド、１５…
…弁座、１６……スプリング、１７……スプール
弁、１８……通路、１８ａ……逃げ孔、２１……
弁座側スチールボール、ａ，ｂ，ｃ，ｅ，ｆ……
環状隙間。 Fig. 1 is a sectional view of the push-type release mechanism, Fig. 2 is a sectional view of the main part, Fig. 3a is a sectional view of the foot-type hydraulic jack, and Fig. 3b is a sectional view taken along the line B-B in Fig. 3b. , FIGS. 4 and 5 are cross-sectional views and principal parts of a conventional jack, and FIG. 6 is a cross-sectional view taken along the line A--A in FIG. 4. Description of symbols, 1...Oil tank chamber, 3...Pump piston, 5...Yoke, 6...Discharge valve, 7
... Cylinder chamber, R ... Push-type release mechanism, 10 ... Release valve body, 11 ... Steel ball on yoke side, 12 ... Valve pin, 13
...Orifice, 14...Valve guide, 15...
... Valve seat, 16 ... Spring, 17 ... Spool valve, 18 ... Passage, 18a ... Relief hole, 21 ...
Steel balls on the valve seat side, a, b, c, e, f...
annular gap.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 油圧ジヤツキのプツシユ式リリーズ機構におい
て、リリーズバルブボデイ内には、入口にヨーク
側スチールボールを配置し、バルブピンを移動自
在に配置したオリフイスを有するバルブガイドを
取付け、該バルブガイドと弁座間には、スプリン
グを介して圧力でバルブガイド側に移動するスプ
ール弁を配置した前記オリフイスに連通する通路
を設け、かつ該通路に連通し、前記スプール弁で
開閉可能な逃げ孔を設けた圧力補償機構を形成し
て成る油圧ジヤツキ。 In the push-type release mechanism of a hydraulic jack, a valve guide with a yoke-side steel ball arranged at the inlet and an orifice with a movably arranged valve pin is installed in the release valve body, and between the valve guide and the valve seat, A pressure compensation mechanism is formed in which a passage is provided that communicates with the orifice in which a spool valve that is moved toward the valve guide side by pressure via a spring is provided, and an escape hole that communicates with the passage and can be opened and closed by the spool valve. Hydraulic jack.
JP1990109411U 1990-10-19 1990-10-19 Hydraulic jack Expired - Lifetime JP2524499Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990109411U JP2524499Y2 (en) 1990-10-19 1990-10-19 Hydraulic jack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990109411U JP2524499Y2 (en) 1990-10-19 1990-10-19 Hydraulic jack

Publications (2)

Publication Number Publication Date
JPH0465292U true JPH0465292U (en) 1992-06-05
JP2524499Y2 JP2524499Y2 (en) 1997-01-29

Family

ID=31856612

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990109411U Expired - Lifetime JP2524499Y2 (en) 1990-10-19 1990-10-19 Hydraulic jack

Country Status (1)

Country Link
JP (1) JP2524499Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000118407A (en) * 1998-10-08 2000-04-25 Kunihiro Michihashi Carriage and travel assisting device for carriage
CN111173904A (en) * 2018-11-13 2020-05-19 舍弗勒技术股份两合公司 hydraulic tensioner

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5931296A (en) * 1982-08-09 1984-02-20 株式会社大阪ジャッキ製作所 Automatic reciprocating hydraulic jack
JPS62108397U (en) * 1985-12-27 1987-07-10

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5931296A (en) * 1982-08-09 1984-02-20 株式会社大阪ジャッキ製作所 Automatic reciprocating hydraulic jack
JPS62108397U (en) * 1985-12-27 1987-07-10

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000118407A (en) * 1998-10-08 2000-04-25 Kunihiro Michihashi Carriage and travel assisting device for carriage
CN111173904A (en) * 2018-11-13 2020-05-19 舍弗勒技术股份两合公司 hydraulic tensioner
CN111173904B (en) * 2018-11-13 2024-02-02 舍弗勒技术股份两合公司 hydraulic tensioner

Also Published As

Publication number Publication date
JP2524499Y2 (en) 1997-01-29

Similar Documents

Publication Publication Date Title
JPS6314038U (en)
JPH0465292U (en)
JPH01173307U (en)
JPS646472U (en)
JPH0414801U (en)
JPH0431303U (en)
JPH03117178U (en)
JPH03118203U (en)
JPS6146293Y2 (en)
JPH0318704U (en)
JPH01113071U (en)
JPH0382808U (en)
JPH0171239U (en)
JPH0478360U (en)
JPH01158858U (en)
JPS63191211U (en)
JPH0212508U (en)
JPS646304U (en)
JPS6414971U (en)
JPH0456276U (en)
JPH02127581U (en)
JPH0288075U (en)
JPS63189871U (en)
JPH0233166U (en)
JPS61162509U (en)