JP5872283B2 - Pressure relief valve - Google Patents

Pressure relief valve Download PDF

Info

Publication number
JP5872283B2
JP5872283B2 JP2011285830A JP2011285830A JP5872283B2 JP 5872283 B2 JP5872283 B2 JP 5872283B2 JP 2011285830 A JP2011285830 A JP 2011285830A JP 2011285830 A JP2011285830 A JP 2011285830A JP 5872283 B2 JP5872283 B2 JP 5872283B2
Authority
JP
Japan
Prior art keywords
valve body
hole
pressure
bolt member
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.)
Active
Application number
JP2011285830A
Other languages
Japanese (ja)
Other versions
JP2013133908A (en
Inventor
俊介 福田
俊介 福田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KYB Corp
Original Assignee
KYB Corp
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 KYB Corp filed Critical KYB Corp
Priority to JP2011285830A priority Critical patent/JP5872283B2/en
Publication of JP2013133908A publication Critical patent/JP2013133908A/en
Application granted granted Critical
Publication of JP5872283B2 publication Critical patent/JP5872283B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)

Description

この発明は、例えば、高圧が作用するブームシリンダを制御する制御弁が作動不能になったとき、当該回路の圧力を抜いてブームシリンダを収縮位置に戻すための圧抜き弁に関する。   The present invention relates to a pressure release valve for releasing the pressure of the circuit and returning the boom cylinder to a contracted position when, for example, a control valve for controlling a boom cylinder to which high pressure is applied becomes inoperable.

この種の圧抜き弁として、図２に示すものが従来から知られている。この従来の圧抜き弁は、その弁本体１に、例えば図示していないブームシリンダのボトム側に連通する連通路２を形成するとともに、この連通路２を、弁本体１に形成した組み込み孔３に開口させているが、この開口部分を圧力ポート４としている。そして、組み込み孔３にはドレンポート５を開口させている。   As this type of pressure relief valve, the one shown in FIG. 2 is conventionally known. In this conventional pressure relief valve, a communication passage 2 communicating with, for example, the bottom side of a boom cylinder (not shown) is formed in the valve body 1, and an integration hole 3 formed in the valve body 1. However, this opening portion is used as a pressure port 4. A drain port 5 is opened in the built-in hole 3.

上記のようにした組み込み孔３はボルト部材６で塞がれるが、ボルト部材６でふさがれた組み込み孔３には弁体７を組み込むとともに、この弁体７は上記圧力ポート４を開閉するポペット部７ａを備えている。そして、上記ボルト部材６には、弁体７の外径とほぼ同じ内径を有する貫通孔８を形成し、この貫通孔８に弁体７を挿入し、上記弁体７を摺動自在に支持する構成にしている。
なお、図中符号９は弁体７の周囲に設けたシールで、弁体７と貫通孔８との摺動隙間をシールするものである。 The built-in hole 3 as described above is closed by the bolt member 6, and the valve body 7 is built into the built-in hole 3 blocked by the bolt member 6, and the valve body 7 is a poppet that opens and closes the pressure port 4. A portion 7a is provided. The bolt member 6 is formed with a through hole 8 having an inner diameter substantially the same as the outer diameter of the valve body 7. The valve body 7 is inserted into the through hole 8, and the valve body 7 is slidably supported. It is configured to do.
In the figure, reference numeral 9 is a seal provided around the valve body 7 and seals the sliding gap between the valve body 7 and the through hole 8.

さらに、上記ポペット部７ａとは反対側となる弁体７の外側に雄ねじ部７ｂを弁体７と一体に設け、この雄ねじ部７ｂを貫通孔８に形成した雌ねじ部に嵌め合わせるとともに、外端には六角レンチ穴７ｃを形成している。
そして、上記雌ねじ部に対して雄ねじ部７ｂを回して、弁体７を圧力ポート４方向に移動させれば、弁体７のポペット部７ａで圧力ポート４を閉じることができる。 Further, a male threaded portion 7b is provided integrally with the valve body 7 on the outer side of the valve element 7 on the side opposite to the poppet part 7a. The male threaded part 7b is fitted to a female threaded part formed in the through hole 8, and the outer end. Is formed with a hexagon wrench hole 7c.
And if the male thread part 7b is turned with respect to the said female thread part and the valve body 7 is moved to the pressure port 4 direction, the pressure port 4 can be closed by the poppet part 7a of the valve body 7. FIG.

そして、圧力ポート４に導かれている圧力を抜くときには、図２の状態から、雄ねじ部７ｂを緩めながら弁体７を圧力ポート４とは反対方向に移動させて圧力ポート４を開く。このようにして圧力ポート４が開けば、連通路２に導かれた圧油は、組み込み孔３を経由してドレンポート５から流出するので、所期の圧抜きができることになる。
なお、符号１０は弁体７の雄ねじ部７ｂに嵌めた緩み止めナットである。 Then, when the pressure guided to the pressure port 4 is released, the pressure port 4 is opened by moving the valve body 7 in the direction opposite to the pressure port 4 while loosening the male screw portion 7b from the state of FIG. If the pressure port 4 is opened in this way, the pressure oil guided to the communication passage 2 flows out from the drain port 5 through the built-in hole 3, so that the desired pressure release can be performed.
Reference numeral 10 denotes a locking nut fitted to the male thread 7b of the valve body 7.

特開２００９−０７９６２３号公報JP 2009-079623 A

上記のようにした従来の圧抜き弁では、貫通孔８に弁体７を摺動自在に挿入しているので、もし、弁体７の雄ねじ部７ｂを回しすぎて、この雄ねじ部７ｂを貫通孔８に形成した雌ねじ部から外してしまうと、弁体７が貫通孔８から外部に飛び出してしまう。特に、上記連通路２がブームシリンダなど高圧となるアクチュエータに接続されているときには、圧力ポート４の圧力が高くなるので、その圧力の作用で弁体７が押されて、貫通孔８から飛び出してしまう。   In the conventional pressure relief valve as described above, since the valve body 7 is slidably inserted into the through hole 8, if the male threaded portion 7b of the valve body 7 is turned too much, the male threaded portion 7b is penetrated. If it removes from the internal thread part formed in the hole 8, the valve body 7 will protrude | jump out of the through-hole 8 outside. In particular, when the communication path 2 is connected to a high-pressure actuator such as a boom cylinder, the pressure of the pressure port 4 is increased, so that the valve element 7 is pushed by the action of the pressure and jumps out of the through hole 8. End up.

もし、弁体７が貫通孔８から完全に飛び出すと、連通路２からの高圧油が貫通孔８から大量に流出してしまうので、その大量の流出油で周辺が汚れたり、あるいはブームシリンダなどのアクチュエータのスピードが速くなったりするという問題が発生する。
この発明の目的は、圧力ポートを開いて高圧を抜くときに、弁体が飛び出さないようにした圧抜き弁を提供することである。 If the valve body 7 completely jumps out of the through hole 8, a large amount of high-pressure oil from the communication passage 2 flows out of the through hole 8, so that the large amount of spilled oil contaminates the periphery, or a boom cylinder, etc. There is a problem that the speed of the actuator increases.
An object of the present invention is to provide a pressure relief valve that prevents a valve body from popping out when a pressure port is opened to release high pressure.

弁本体と、上記弁本体に形成された組み込み孔と、上記弁本体に形成されるとともに上記組み込み孔に開口された圧力ポートと、上記組み込み孔に組み込まれるとともに上記圧力ポートを開閉する弁体と、上記圧力ポートに対して弁体が開いたときに、上記組み込み孔を介して上記圧力ポートと連通するドレンポートと、上記弁体を摺動自在に支持するガイド部と、を備えた圧抜き弁に関する。   A valve body; an assembly hole formed in the valve body; a pressure port formed in the valve body and opened in the assembly hole; and a valve body incorporated in the assembly hole and opening and closing the pressure port; A pressure relief device comprising: a drain port that communicates with the pressure port through the built-in hole when the valve body is opened with respect to the pressure port; and a guide portion that slidably supports the valve body. Regarding the valve.

そして、第１の発明は、上記弁体が径部とこの大径部よりも小径に形成された軸部とからなり、上記組み込み孔に先端を臨ませ、弁本体に取り外し可能にしたボルト部材と、このボルト部材に形成された貫通孔に着脱可能にしたプラグとを備え、
上記ボルト部材の貫通孔は、上記ガイド部として上記軸部を摺動可能に支持するとともに、
上記ボルト部材の先端を、上記弁体が開くときの軸方向における上記大径部と上記軸部との境界である段差部の移動軌跡上に設けられたストッパとし、
さらに、上記ボルト部材の貫通孔には、その内径を上記軸部が挿入される部分よりも大きくした雌ねじ部を形成し、この雌ねじ部に上記プラグの外周に形成された雄ねじを嵌め合わせて上記プラグの先端を上記軸部に接触させた点に特徴を有する。 The first invention comprises the valve body diameter and the shaft portion formed smaller in diameter than the large diameter portion, the built-holes to face the tip, the bolt member to removably valve body And a plug that is attachable to and detachable from a through hole formed in the bolt member,
The through hole of the bolt member slidably supports the shaft portion as the guide portion,
The tip of the bolt member is a stopper provided on the movement trajectory of the step portion which is the boundary between the large diameter portion and the shaft portion in the axial direction when the valve body opens,
Furthermore, in the through hole of the bolt member, a female screw part having an inner diameter larger than that of the portion into which the shaft part is inserted is formed, and a male screw formed on the outer periphery of the plug is fitted into the female screw part. It is characterized in that the tip of the plug is brought into contact with the shaft portion .

第２の発明は、上記段差部側の受圧面積に対して、上記弁体が開弁位置にあるときの上記弁体のポペット部側の受圧面積を大きくした点に特徴を有する。 The second invention is characterized in that the pressure receiving area on the poppet side of the valve body when the valve body is in the valve open position is increased with respect to the pressure receiving area on the stepped part side.

第１の発明によれば、弁体に弁本体から抜ける方向の力が作用したとき、弁体はストッパで止められるので、弁体が弁本体から抜け出たりしない。   According to the first aspect of the invention, when a force in the direction in which the valve body comes out of the valve body is applied to the valve body, the valve body is stopped by the stopper, so that the valve body does not come out of the valve body.

また、弁体は上記のようにストッパの位置に止まるので、圧力ポートの最大開度は、弁体が止まったストッパの位置で制御される。したがって、圧力ポートの開度が大きくなって、アクチュエータの速度が速くなりすぎることはない。   Since the valve body stops at the stopper position as described above, the maximum opening degree of the pressure port is controlled by the position of the stopper at which the valve body stops. Therefore, the opening degree of the pressure port does not increase and the speed of the actuator does not become too high.

さらに、弁本体に取り外し可能にしたボルト部材に貫通孔を形成し、この貫通孔を上記ガイド部としたので、従来の圧抜き弁に対して、特別な部材を設ける必要がない。しかも、組み付け孔に臨ませたボルト部材の軸方向長さに応じて、圧抜き時の圧力ポートの最大開度を設定できるので、ボルト部材の大きさを選択するだけで、上記最大開度を自由に設定できる。 Furthermore , since a through hole is formed in the bolt member that can be removed from the valve body, and this through hole is used as the guide portion, it is not necessary to provide a special member for the conventional pressure release valve. In addition, since the maximum opening of the pressure port at the time of pressure release can be set according to the axial length of the bolt member facing the assembly hole, the maximum opening can be set only by selecting the size of the bolt member. Can be set freely.

また、上記軸部とは別に設けたプラグを上記貫通孔の雌ねじ部に着脱可能に嵌め合わせて、プラグ先端を上記軸部端に接触させ、弁体とプラグとを別々にしたので、例えば緊急時にあわててプラグを引き抜いたとしても、弁体が弁本体から抜け出ることはない。 Further , since the plug provided separately from the shaft portion is detachably fitted to the female screw portion of the through hole, the tip of the plug is brought into contact with the end of the shaft portion, and the valve body and the plug are separated, for example, emergency Even if the plug is pulled out sometimes, the valve body will not come out of the valve body.

第２の発明によれば、段差部側の受圧面積に対して、開弁状態におけるポペット部側の受圧面積を大きくしたので、圧力ポートの圧力による弁体の追従性が良くなる。
According to the second aspect , since the pressure receiving area on the poppet portion side in the valve open state is made larger than the pressure receiving area on the step portion side, the followability of the valve body by the pressure of the pressure port is improved.

この発明の実施形態を示す断面図である。It is sectional drawing which shows embodiment of this invention. 従来の圧抜き弁の断面図である。It is sectional drawing of the conventional pressure release valve.

この実施形態の弁本体１１に、例えば図示していないブームシリンダのボトム側に連通する連通路１２を形成するとともに、この連通路１２を、弁本体１１に形成した組み込み孔１３に開口させているが、この開口部分を圧力ポート１４としている。また、上記組み込み孔１３にはドレンポート１５の一端を開口させている。   In the valve body 11 of this embodiment, for example, a communication path 12 communicating with the bottom side of a boom cylinder (not shown) is formed, and the communication path 12 is opened in an assembly hole 13 formed in the valve body 11. However, this opening is used as the pressure port 14. Further, one end of a drain port 15 is opened in the built-in hole 13.

上記のようにした組み込み孔１３はボルト部材１６で塞がれるが、組み込み孔１３の開口部分には雌ねじ部１３ａを形成し、ボルト部材１６の雄ねじ部１６ａをこの雌ねじ部１３ａに嵌め合わせるようにしている。   The built-in hole 13 as described above is closed by the bolt member 16, but an internal thread portion 13a is formed in the opening portion of the built-in hole 13, and the external thread portion 16a of the bolt member 16 is fitted to the internal thread portion 13a. ing.

このようにボルト部材１６で塞がれた組み込み孔１３には弁体１７が組み込まれるが、この弁体１７は、大径部１７ａの一端に上記圧力ポート１４を開閉するポペット部１７ｂを形成するとともに、大径部１７ａの他端に軸部１７ｃを一体的に設けている。
そして、上記軸部１７ｃは、大径部１７ａよりもその外径を小さくするとともに、それら大径部１７ａと軸部１７ｃとの境界部分に段差部１７ｄを形成している。 Thus, the valve body 17 is incorporated into the assembly hole 13 closed by the bolt member 16, and this valve body 17 forms a poppet portion 17b for opening and closing the pressure port 14 at one end of the large diameter portion 17a. In addition, a shaft portion 17c is integrally provided at the other end of the large diameter portion 17a.
The shaft portion 17c has an outer diameter smaller than that of the large diameter portion 17a, and a step portion 17d is formed at a boundary portion between the large diameter portion 17a and the shaft portion 17c.

また、上記ボルト部材１６には、弁体１７の上記軸部１７ｃの外径とほぼ同じ内径を有する貫通孔１８を形成し、この貫通孔１８で上記弁体１７の軸部１７ｃを摺動自在に支持している。そして、軸部１７ｃと貫通孔１８との摺動すき間をシール１９でシールしている。なお、上記貫通孔１８は、この発明のガイド部を構成するものである。
段差部１７ｄ側の受圧面積は、ポペット部１７ｂ側の受圧面積よりも、軸部１７ｃの断面積分だけ小さくしている。このようにポペット部１７ｂ側の受圧面積を大きくしたので、圧力ポート１４の圧力による弁体１７の追従性が良くなる。 The bolt member 16 is formed with a through hole 18 having an inner diameter substantially the same as the outer diameter of the shaft portion 17c of the valve body 17, and the shaft portion 17c of the valve body 17 is slidable through the through hole 18. I support it. A sliding gap between the shaft portion 17 c and the through hole 18 is sealed with a seal 19. In addition, the said through-hole 18 comprises the guide part of this invention.
The pressure receiving area on the stepped portion 17d side is made smaller by the cross-sectional integral of the shaft portion 17c than the pressure receiving area on the poppet portion 17b side. As described above, since the pressure receiving area on the poppet portion 17b side is increased, the followability of the valve body 17 by the pressure of the pressure port 14 is improved.

さらに、上記組み込み孔１３に組み込んだボルト部材１６の先端１６ｂは、弁体１７が軸方向に移動したときの段差部１７ｄの移動軌跡上にあり、ストッパとして機能する。
弁体１７が組み込み孔１３から抜ける方向に移動したときには、段差部１７ｄがボルト部材１６の先端すなわちストッパ１６ｂに当たって、それ以上移動できなくなり、この時点で圧力ポート１４の最大開度が決まることになる。 Furthermore, the tip 16b of the bolt member 16 incorporated in the assembly hole 13 is on the movement locus of the stepped portion 17d when the valve body 17 moves in the axial direction, and functions as a stopper.
When the valve body 17 is moved in the direction in which it is removed from the assembly hole 13, the stepped portion 17d hits the tip of the bolt member 16, that is, the stopper 16b and cannot move any further, and the maximum opening of the pressure port 14 is determined at this point. .

したがって、組み付け孔１３に臨ませたボルト部材１６の軸方向長さに応じて、圧抜き時の圧力ポート１４の最大開度を設定できる。言い換えれば、ボルト部材の大きさを選択するだけで、圧抜き時の圧力ポート１４の最大開度を自由に設定できる。   Therefore, the maximum opening degree of the pressure port 14 during pressure release can be set according to the axial length of the bolt member 16 facing the assembly hole 13. In other words, the maximum opening degree of the pressure port 14 at the time of depressurization can be freely set only by selecting the size of the bolt member.

また、上記貫通孔１８の開口部すなわち軸部１７ｃを挿入する開口とは反対側の開口部分には雌ねじ部１８ａを形成しているが、この雌ねじ部１８ａの内径は、貫通孔１８であって軸部１７ｃが挿入される部分の内径よりも大きくしている。そして、この雌ねじ部１８ａには、外周に雄ねじを形成したプラグ２０をねじ込んでいるが、このプラグ２０を上記雌ねじ部１８ａいっぱいに押し込んだとき、図１に示すようにポペット部１７ｂが圧力ポート１４を閉じる寸法関係に設定している。   Further, an internal thread portion 18a is formed in the opening portion of the through hole 18, that is, the opening portion on the opposite side to the opening into which the shaft portion 17c is inserted, and the internal diameter of the internal thread portion 18a is the through hole 18. It is larger than the inner diameter of the portion where the shaft portion 17c is inserted. A plug 20 having a male screw formed on the outer periphery is screwed into the female screw portion 18a. When the plug 20 is pushed all the way into the female screw portion 18a, the poppet portion 17b is connected to the pressure port 14 as shown in FIG. Is set to close dimensions.

上記のようにしたプラグ２０には六角レンチ穴２０ａを形成し、六角レンチを使ってプラグ２０を回せるようにしている。
なお、図中符号２１は、プラグ２０の緩みを止めるための緩み止め用ナットである。 A hexagon wrench hole 20a is formed in the plug 20 as described above so that the plug 20 can be turned using a hexagon wrench.
Reference numeral 21 in the figure denotes a locking nut for stopping the plug 20 from loosening.

この実施形態によれば、緊急事態にあわててプラグ２０を外したとしても、弁体１７はストッパ１６ｂで止められるので、弁体１７が弁本体１１から抜け出たりしない。
しかも、このときには圧力ポート１４の最大開度がストッパ１６ｂの位置で決まるので、アクチュエータの速度が必要以上に速くなることもない。 According to this embodiment, even if the plug 20 is removed in the event of an emergency, the valve body 17 is stopped by the stopper 16b, so that the valve body 17 does not come out of the valve body 11.
In addition, at this time, since the maximum opening degree of the pressure port 14 is determined by the position of the stopper 16b, the speed of the actuator is not increased more than necessary.

また、ボルト部材１６の先端をストッパ１６ｂとしたので、例えば、図２に示した従来の弁体７以外の部品をそのまま用いることができ、ストッパを設けるための特別な部品を必要とせず、その分、部品点数を実質的に減らすことができる。
しかも、組み付け孔１３に臨ませたボルト部材１６の軸方向長さを変えれば、圧力ポート１４の最大開度が変わるので、上記最大開度を自由に設定できる。 Moreover, since the tip of the bolt member 16 is the stopper 16b, for example, parts other than the conventional valve body 7 shown in FIG. 2 can be used as they are, and no special parts for providing the stopper are required. Therefore, the number of parts can be substantially reduced.
In addition, if the axial length of the bolt member 16 facing the assembly hole 13 is changed, the maximum opening degree of the pressure port 14 is changed, so that the maximum opening degree can be set freely.

ブームシリンダなど、高圧が作用する装置の圧抜き弁として最適である。   Ideal as a pressure relief valve for high pressure devices such as boom cylinders.

１１ 弁本体
１３ 組み込み孔
１４ 圧力ポート
１５ ドレンポート
１６ ボルト部材
１６ｂ ストッパ
１７ 弁体
１７ａ 大径部
１７ｃ 軸部
１７ｄ 段差部
１８ 貫通孔
１８ａ 雌ねじ部
２０ プラグ 11 Valve body 13 Assembly hole 14 Pressure port 15 Drain port 16 Bolt member 16b Stopper 17 Valve body 17a Large diameter portion 17c Shaft portion 17d Stepped portion 18 Through hole 18a Female thread portion 20 Plug

Claims (2)

弁本体と、上記弁本体に形成された組み込み孔と、上記弁本体に形成されるとともに上記組み込み孔に開口された圧力ポートと、上記組み込み孔に組み込まれるとともに上記圧力ポートを開閉する弁体と、上記圧力ポートに対して弁体が開いたときに、上記組み込み孔を介して上記圧力ポートと連通するドレンポートと、上記弁体を摺動自在に支持するガイド部と、を備えた圧抜き弁であって、
上記弁体は、大径部とこの大径部よりも小径に形成された軸部とからなり、
上記組み込み孔に先端を臨ませ、上記弁本体に取り外し可能にしたボルト部材と、このボルト部材に形成された貫通孔に着脱可能にしたプラグとを備え、
上記ボルト部材の貫通孔は、上記ガイド部として上記軸部を摺動可能に支持するとともに、
上記ボルト部材の先端を、上記弁体が開くときの軸方向における上記大径部と上記軸部との境界である段差部の移動軌跡上に設けられたストッパとし、
さらに、上記ボルト部材の貫通孔には、その内径を上記軸部が挿入される部分よりも大きくした雌ねじ部を形成し、この雌ねじ部に上記プラグの外周に形成された雄ねじを嵌め合わせて上記プラグの先端を上記軸部に接触させた圧抜き弁。 A valve body; an assembly hole formed in the valve body; a pressure port formed in the valve body and opened in the assembly hole; and a valve body incorporated in the assembly hole and opening and closing the pressure port; A pressure relief device comprising: a drain port that communicates with the pressure port through the built-in hole when the valve body is opened with respect to the pressure port; and a guide portion that slidably supports the valve body. A valve,
The valve body is composed of a large diameter portion and a shaft portion formed to have a smaller diameter than the large diameter portion,
A bolt member that faces the built-in hole and is detachable from the valve body, and a plug that is detachable from a through hole formed in the bolt member,
The through hole of the bolt member slidably supports the shaft portion as the guide portion,
The tip of the bolt member is a stopper provided on the movement trajectory of the step portion which is the boundary between the large diameter portion and the shaft portion in the axial direction when the valve body opens,
Furthermore, in the through hole of the bolt member, a female screw part having an inner diameter larger than that of the portion into which the shaft part is inserted is formed, and a male screw formed on the outer periphery of the plug is fitted into the female screw part. A pressure relief valve with the tip of the plug in contact with the shaft . 上記段差部側の受圧面積に対して、上記弁体が開弁位置にあるときの上記弁体のポペット部側の受圧面積を大きくした請求項１に記載の圧抜き弁。 The pressure relief valve according to claim 1, wherein the pressure receiving area on the poppet side of the valve body when the valve body is in the valve open position is larger than the pressure receiving area on the stepped portion side .
JP2011285830A 2011-12-27 2011-12-27 Pressure relief valve Active JP5872283B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011285830A JP5872283B2 (en) 2011-12-27 2011-12-27 Pressure relief valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011285830A JP5872283B2 (en) 2011-12-27 2011-12-27 Pressure relief valve

Publications (2)

Publication Number Publication Date
JP2013133908A JP2013133908A (en) 2013-07-08
JP5872283B2 true JP5872283B2 (en) 2016-03-01

Family

ID=48910747

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011285830A Active JP5872283B2 (en) 2011-12-27 2011-12-27 Pressure relief valve

Country Status (1)

Country Link
JP (1) JP5872283B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6604487B2 (en) * 2017-07-11 2019-11-13 株式会社タツノ Pipe fitting
KR102626460B1 (en) * 2022-05-20 2024-01-17 주식회사 현대케피코 Bleed valve

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009079623A (en) * 2007-09-25 2009-04-16 Jtekt Corp Valve device and manual opening and closing valve device
JP5193989B2 (en) * 2009-12-15 2013-05-08 株式会社ネリキ Valve device

Also Published As

Publication number Publication date
JP2013133908A (en) 2013-07-08

Similar Documents

Publication Publication Date Title
JP6327421B2 (en) Fluid control valve
WO2013105442A1 (en) Relief valve
CN105697828A (en) Hydraulic control one-way valve
WO2012082653A3 (en) Devices, assemblies and methods for controlling fluid flow
WO2012005908A3 (en) Devices, assemblies, and methods for controlling fluid flow
WO2008144044A3 (en) Electronically controlled valve and systems containing same
WO2015010216A8 (en) Valve arrangement
JP5872283B2 (en) Pressure relief valve
WO2009034944A1 (en) Suck-back valve
WO2008102734A1 (en) Directional control valve device and directional control valve device block having directional control valve devices
ITMO20120042A1 (en) LOAD DISPLACEMENT VALVE
JP6606426B2 (en) Valve device
JP5950980B2 (en) Control valve device
JP2009270597A (en) Damper device
JP6284469B2 (en) Hydraulic circuit
JP2016084905A5 (en)
BR112017022042A2 (en) multi-way valve and as well as actuator comprising such a multi-way valve
CN113339344A (en) Relief valve reaches hydraulic pressure power assisted steering ware including it
JP6281637B2 (en) Spool valve and lubrication switching device
US9920777B2 (en) Differential cylinder for a hydromechanical drive for electrical circuit breakers
CN203286065U (en) Plug-in mounting pressure feedback safety stop valve
JP6447195B2 (en) Switching valve for hydraulic control
CA2852252C (en) Downhole tool actuator
CN108150684B (en) Two-way pressure reducing valve
CN104819179A (en) Overflow

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20140623

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20150515

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20150526

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20150724

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20151216

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20160113

R151 Written notification of patent or utility model registration

Ref document number: 5872283

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350