JP2003227571A - Poppet valve - Google Patents
Poppet valveInfo
- Publication number
- JP2003227571A JP2003227571A JP2002025049A JP2002025049A JP2003227571A JP 2003227571 A JP2003227571 A JP 2003227571A JP 2002025049 A JP2002025049 A JP 2002025049A JP 2002025049 A JP2002025049 A JP 2002025049A JP 2003227571 A JP2003227571 A JP 2003227571A
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- side flow
- communication hole
- flow path
- outflow side
- 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
Links
Landscapes
- Lift Valve (AREA)
- Safety Valves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、流入側流路と流
出側流路との連通を遮断したり連通したりするポペット
弁に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a poppet valve that blocks or connects communication between an inflow side flow path and an outflow side flow path.
【０００２】[0002]
【従来の技術】図３に示す従来例は、ボディ１に組み付
け孔２を形成するとともに、この組み付け孔２に流入側
流路３と流出側流路４とを連通させている。また、上記
組み付け孔２には、弁体５とスプリングＳとを組み込む
とともに、その開口部を閉塞部材６によって塞いでい
る。上記弁体５は、スプリングＳの弾性力によって、そ
の弁部５ａをシート部７に押し付けるようにしている。
そして、このように弁部５ａをシート部７に押し付けた
状態で、流入側流路３と流出側流路４との連通を遮断す
るようにしている。また、この弁体５が、図示する状態
からスプリングＳの弾性力に抗してリフトして、その弁
部５ａがシート部７から離れると、流入側流路３と流出
側流路４とが連通するようにしている。2. Description of the Related Art In the conventional example shown in FIG. 3, an assembly hole 2 is formed in a body 1, and an inflow side flow path 3 and an outflow side flow path 4 are communicated with the assembly hole 2. Further, the valve body 5 and the spring S are incorporated in the assembly hole 2, and the opening thereof is closed by the closing member 6. The valve body 5 presses the valve portion 5a against the seat portion 7 by the elastic force of the spring S.
Then, with the valve portion 5a being pressed against the seat portion 7 as described above, the communication between the inflow side flow passage 3 and the outflow side flow passage 4 is blocked. Further, when the valve body 5 lifts from the state shown in the figure against the elastic force of the spring S and the valve portion 5a thereof separates from the seat portion 7, the inflow side flow passage 3 and the outflow side flow passage 4 are separated from each other. I try to communicate.
【０００３】上記流入側流路３には、油圧ポンプなどの
圧力源を接続し、上記流出側流路４には、油圧シリンダ
などのアクチュエータを接続するようにしている。ま
た、上記スプリングＳを組み込んだ室８には、図示して
いない外部パイロットの指令に応じた制御圧力を導くよ
うにしている。この制御圧力によって、弁体５のリフト
量を調整できるようにしている。A pressure source such as a hydraulic pump is connected to the inflow side flow path 3, and an actuator such as a hydraulic cylinder is connected to the outflow side flow path 4. Further, a control pressure according to a command from an external pilot (not shown) is introduced into the chamber 8 in which the spring S is incorporated. With this control pressure, the lift amount of the valve body 5 can be adjusted.
【０００４】上記弁体５の先端側には、環状の突出部９
を設けている。この突出部９は、その外径を流入側流路
３の内径よりも僅かに小さくして、流入側流路３に挿入
可能にしている。また、上記突出部９の基端側には、連
通孔１０を複数形成している。これら連通孔１０は、図
示する状態から弁体５がリフトすると、流出側流路４に
開口して、流入側流路３と流出側流路４とを連通する。
このように連通孔１０を介して流入側流路３と流出側流
路４とが連通すると、流入側流路３の圧油が、流出側流
路４に供給される。An annular protrusion 9 is provided on the tip side of the valve body 5.
Is provided. The protrusion 9 has an outer diameter slightly smaller than the inner diameter of the inflow side flow passage 3 and can be inserted into the inflow side flow passage 3. Further, a plurality of communication holes 10 are formed on the base end side of the projecting portion 9. When the valve body 5 is lifted from the state shown in the drawing, these communication holes 10 open in the outflow side flow path 4 and connect the inflow side flow path 3 and the outflow side flow path 4 to each other.
When the inflow side flow path 3 and the outflow side flow path 4 communicate with each other through the communication hole 10 in this manner, the pressure oil in the inflow side flow path 3 is supplied to the outflow side flow path 4.
【０００５】なお、上記のように流通孔１０を介して流
入側流路３と流出側流路４とが連通するようにしたの
は、弁体５がリフトしたときの開口面積を微調節するこ
とによって、流入側流路３から流出側流路４に流れ込む
流量を微調節するためである。The inflow side flow path 3 and the outflow side flow path 4 are made to communicate with each other through the flow holes 10 as described above, so that the opening area when the valve body 5 is lifted is finely adjusted. This is for finely adjusting the flow rate flowing from the inflow side flow path 3 into the outflow side flow path 4.
【０００６】次に、この従来例の作用を説明する。図示
する状態から、流入側流路３内の圧力が上昇して、弁体
５に作用する図中上向きの推力が、スプリングＳの弾性
力と室８のパイロット圧による図中下向きの推力よりも
大きくなると、スプリングＳを撓ませながら弁体５が図
中上方向に移動する。このようにして弁体５がリフトす
ると、その弁部５ａがシート部７から離れるとともに、
連通孔１０が流出側流路４に開口する。そのため、この
連通孔１０の開口面積に応じた流量が、流入側流路３→
突出部９の内側→連通孔１０を介して流出側流路４に流
れ込む。以上のようにして、設定した圧力以上の圧油
が、流出側通路３に接続した図示していないアクチュエ
ータに供給されるようにしている。Next, the operation of this conventional example will be described. From the state shown in the figure, the pressure in the inflow side flow path 3 rises, and the upward thrust in the figure acting on the valve body 5 is lower than the downward thrust in the figure due to the elastic force of the spring S and the pilot pressure in the chamber 8. When it becomes larger, the valve element 5 moves upward in the figure while bending the spring S. When the valve body 5 is lifted in this manner, the valve portion 5a is separated from the seat portion 7, and
The communication hole 10 opens to the outflow side flow path 4. Therefore, the flow rate according to the opening area of the communication hole 10 becomes
Inside of the protruding portion 9 → flows into the outflow side flow path 4 via the communication hole 10. As described above, the pressure oil equal to or higher than the set pressure is supplied to the actuator (not shown) connected to the outflow side passage 3.
【０００７】[0007]
【発明が解決しようとする課題】上記弁体５がリフトし
たときに、流入側通路３の圧油が連通孔１０を介して流
出側流路４に流出するが、このとき流体は、図４に示す
ように、シート部７に沿って矢印Ａ方向に流出する。こ
のようにして流体が矢印Ａ方向に流出すると、弁体５に
流体力Ｆが作用する。この流体力Ｆは、流体の流れる方
向θと反対方向に作用し、弁体５を閉じようとする。ま
た、この流体力Ｆは、流出量に比例している。When the valve body 5 is lifted, the pressure oil in the inflow side passage 3 flows out to the outflow side flow path 4 through the communication hole 10. At this time, the fluid flows as shown in FIG. As shown in FIG. 5, the water flows out in the direction of arrow A along the seat portion 7. When the fluid flows out in the direction of arrow A in this way, the fluid force F acts on the valve body 5. The fluid force F acts in the direction opposite to the fluid flow direction θ, and tends to close the valve body 5. The fluid force F is proportional to the outflow amount.
【０００８】そのため、上記従来例では、弁体５が大き
くリフトして流出量が増加したときに、それに伴って増
加する流体力Ｆの影響によって、弁体５が閉じてしまう
ことがあった。そして、このように弁体５が閉じること
が原因で、流入側流路３から流出側流路４へ流れる流体
の圧力損失が大きくなるという問題があった。この発明
の目的は、弁体のリフト量が多くなったときでも、弁体
が閉じたりしないポペット弁を提供することである。Therefore, in the above-mentioned conventional example, when the valve body 5 is largely lifted and the outflow amount is increased, the valve body 5 may be closed due to the influence of the fluid force F which is increased accordingly. There is a problem that the pressure loss of the fluid flowing from the inflow side flow path 3 to the outflow side flow path 4 increases due to the closing of the valve body 5 in this way. An object of the present invention is to provide a poppet valve in which the valve body does not close even when the lift amount of the valve body increases.
【０００９】[0009]
【課題を解決するための手段】第１の発明は、弁体を付
勢手段によってシート部に押し付けるとともに、この弁
体がシート部に押し付けられた状態で、流入側流路と流
出側流路との連通を遮断するポペット弁において、上記
弁体の先端に、環状の突出部を設けるとともに、この突
出部の基端側に小径の第１連通孔を径方向に形成し、突
出部の先端側に大径の第２連通孔を形成し、弁体がリフ
トするときに、上記第１連通孔が流出側流路に開口した
後、上記第２連通孔が流出側流路に開口する構成にした
ことを特徴とする。According to a first aspect of the present invention, a valve body is pressed against a seat portion by a biasing means, and in a state where the valve body is pressed against the seat portion, an inflow side flow passage and an outflow side flow passage are provided. In a poppet valve that blocks communication with the valve body, an annular protrusion is provided at the tip of the valve body, and a small diameter first communication hole is formed in the radial direction at the base end side of the protrusion, and the tip of the protrusion is formed. A large-diameter second communication hole is formed on the side, and when the valve body is lifted, the first communication hole is opened to the outflow-side passage, and then the second communication hole is opened to the outflow-side passage. It is characterized by having done.
【００１０】第２の発明は、上記第１の発明において、
弁体が最上位置にリフトしたときに、シート部上面より
も上方に、第１連通孔が位置する構成にしたことを特徴
とする。A second invention is the same as the first invention,
When the valve body is lifted to the uppermost position, the first communication hole is located above the upper surface of the seat portion.
【００１１】[0011]
【発明の実施の形態】図１、図２にこの発明の実施形態
を示すが、前記従来例と同じ構成要素については同じ符
号を付して説明する。図１に示すように、ボディ１に組
み付け孔２を形成するとともに、この組み付け孔２に流
入側流路３と流出側流路４とを連通させている。また、
上記組み付け孔２には、弁体５とスプリングＳとを組み
込むとともに、その開口部を閉塞部材６によって塞いで
いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention is shown in FIGS. 1 and 2. The same components as those of the conventional example will be described with the same reference numerals. As shown in FIG. 1, an assembly hole 2 is formed in the body 1, and an inflow side flow path 3 and an outflow side flow path 4 are communicated with the assembly hole 2. Also,
The valve body 5 and the spring S are incorporated in the assembly hole 2, and the opening is closed by the closing member 6.
【００１２】上記弁体５は、スプリングＳの弾性力によ
って、その弁部５ａをシート部７に押し付けるようにし
ている。そして、このように弁部５ａをシート部７に押
し付けた状態で、流入側流路３と流出側流路４との連通
を遮断するようにしている。また、この弁体５が、図示
する状態からスプリングＳの弾性力に抗してリフトし
て、その弁部５ａがシート部７から離れると、流入側流
路３と流出側流路４とが連通するようにしている。な
お、上記スプリングＳが、この発明の付勢手段に相当す
るが、弁体５をシート部７に押し付けることができるの
であれば、付勢手段はスプリングＳ以外もよい。The valve body 5 is adapted to press the valve portion 5a against the seat portion 7 by the elastic force of the spring S. Then, with the valve portion 5a being pressed against the seat portion 7 as described above, the communication between the inflow side flow passage 3 and the outflow side flow passage 4 is blocked. Further, when the valve body 5 lifts from the state shown in the figure against the elastic force of the spring S and the valve portion 5a thereof separates from the seat portion 7, the inflow side flow passage 3 and the outflow side flow passage 4 are separated from each other. I try to communicate. The spring S corresponds to the urging means of the present invention, but the urging means may be other than the spring S as long as the valve body 5 can be pressed against the seat portion 7.
【００１３】上記流入側流路３には、油圧ポンプなどの
圧力源を接続し、上記流出側流路４には、油圧シリンダ
などのアクチュエータを接続するようにしている。ま
た、上記スプリングＳを組み込んだ室８には、図示して
いない外部パイロットの指令に応じた制御圧力を導くよ
うにしている。この制御圧力によって、弁体５のリフト
量を調整できるようにしている。A pressure source such as a hydraulic pump is connected to the inflow side flow path 3, and an actuator such as a hydraulic cylinder is connected to the outflow side flow path 4. Further, a control pressure according to a command from an external pilot (not shown) is introduced into the chamber 8 in which the spring S is incorporated. With this control pressure, the lift amount of the valve body 5 can be adjusted.
【００１４】上記弁体５の先端側には、環状の突出部１
１を設けている。この突出部１１は、弁体５と一体に形
成してもよいし、別部材からなる突出部１１を弁体５に
固定するようにしてもよい。このようにした突出部１１
は、その外径を流入側流路３の内径よりも僅かに小さく
して、流入側流路３に挿入可能にしている。また、上記
突出部１１は、その基端側に小径の第１連通孔１２を径
方向に複数形成している。さらに、この突出部１１の先
端側には、大径の第２連通孔１３を複数形成している。
上記第１連通孔１２と第２連通孔１３は、図示する状態
から弁体５がリフトすると、最初に第１連通孔１２が流
出側流路４に開口し、その後、第２連通孔１３が流出側
流路４に開口する。このようにして第１、第２連通孔１
２、１３が流出側流路４に開口すると、各連通孔１２，
１３を介して流入側流路３の圧油が、流出側流路４に供
給されることになる。An annular protrusion 1 is provided on the tip side of the valve body 5.
1 is provided. The protrusion 11 may be formed integrally with the valve body 5, or the protrusion 11 formed of a separate member may be fixed to the valve body 5. The protruding portion 11 thus configured
The outer diameter thereof is slightly smaller than the inner diameter of the inflow-side flow passage 3 so that it can be inserted into the inflow-side flow passage 3. Further, the protruding portion 11 has a plurality of small-diameter first communication holes 12 formed in the radial direction on the base end side thereof. Further, a plurality of large-diameter second communication holes 13 are formed on the tip side of the projecting portion 11.
When the valve body 5 is lifted from the state shown in the drawing, the first communication hole 12 and the second communication hole 13 first open the first communication hole 12 in the outflow side flow passage 4, and then the second communication hole 13 is opened. It opens to the outflow side flow path 4. In this way, the first and second communication holes 1
When 2 and 13 open in the outflow side flow path 4, the communication holes 12 and
The pressure oil in the inflow side flow path 3 is supplied to the outflow side flow path 4 via 13.
【００１５】次に、この実施形態の作用を説明する。図
１に示す状態から、流入側流路３内の圧力が上昇して、
弁体５に作用する図中上向きの推力が、スプリングＳの
弾性力と室８のパイロット圧による図中下向きの推力よ
りも大きくなると、スプリングＳを撓ませながら弁体５
が図中上方向に移動する。このようにして弁体５がリフ
トすると、その弁部５ａがシート部７から離れるととも
に、第１連通孔１２が流出側流路４に開口する。そのた
め、この第１連通孔１２の開口面積に応じた流量が、流
入側流路３→突出部１１の内側→第１連通孔１２を介し
て流出側流路４に流れ込む。Next, the operation of this embodiment will be described. From the state shown in FIG. 1, the pressure in the inflow side channel 3 increases,
When the upward thrust in the figure acting on the valve body 5 becomes larger than the downward thrust in the figure due to the elastic force of the spring S and the pilot pressure of the chamber 8, the valve body 5 is bent while the spring S is flexed.
Moves upward in the figure. When the valve body 5 is lifted in this way, the valve portion 5a is separated from the seat portion 7 and the first communication hole 12 is opened to the outflow side flow passage 4. Therefore, the flow rate corresponding to the opening area of the first communication hole 12 flows into the outflow side flow path 4 through the inflow side flow path 3 → the inside of the protrusion 11 → the first communication hole 12.
【００１６】上記の状態から弁体５がさらにリフトする
と、第２連通孔１３も流出側流路４に開口する。そのた
め、この第２連通孔１３と上記第１連通孔１２とを介し
て流入側流路３の圧油が流出側流路４に流れ込むことに
なる。図２は、弁体５が最も上昇した状態、すなわちフ
ルリフトしたときの状態を示している。図示するよう
に、第１連通孔１２から流出した圧油は、弁体５のリフ
ト方向に対して垂直のＢ方向に流出している。これは、
径方向に形成した第１連通孔１２を小径にして、流出す
る圧油の流速を上げるとともに、この圧油を流出する第
１連通孔１２の位置を、シート部７の上面７ａよりも図
面上方になるように設定しているからである。つまり、
第１連通孔１２から高速で流出させた圧油を、シート部
７によって遮ることなく、そのまま流出側流路４側に導
くようにしている。When the valve body 5 is further lifted from the above state, the second communication hole 13 also opens in the outflow side flow path 4. Therefore, the pressure oil in the inflow side flow path 3 flows into the outflow side flow path 4 through the second communication hole 13 and the first communication hole 12. FIG. 2 shows a state in which the valve body 5 is most raised, that is, a state in which it is fully lifted. As illustrated, the pressure oil flowing out from the first communication hole 12 flows out in the B direction perpendicular to the lift direction of the valve body 5. this is,
The diameter of the first communication hole 12 formed in the radial direction is reduced to increase the flow rate of the pressure oil that flows out, and the position of the first communication hole 12 where the pressure oil flows out is set above the upper surface 7a of the seat portion 7 in the drawing. This is because it is set so that That is,
The pressure oil that flows out from the first communication hole 12 at high speed is guided to the outflow-side flow path 4 side as it is without being blocked by the seat portion 7.
【００１７】一方、第２連通孔１３から流出する圧油
は、シート部７に沿ってＣ方向に流れている。これは、
大径で開口面積の大きい第２連通孔１３から流出する圧
油は、第１連通孔１２に比べて流速が遅く、しかも、こ
の第２連通孔１３の対向する位置にシート部７が位置し
ているからである。ただし、この第２連通孔１３からシ
ート部７に沿ってＣ方向に流出した圧油は、第１連通孔
１２からＢ方向に高速で流出した圧油によって、その流
れの向きが変えられる。すなわち、第２連通孔１３から
シート部７に沿って流出した圧油に、第１連通孔１２か
ら高速で流出させた圧油をぶつけることによって、第２
連通孔１３から流出した圧油の向きを、弁体５のリフト
方向に対してほぼ垂直方向に曲げるようにしている。On the other hand, the pressure oil flowing out from the second communication hole 13 flows along the seat portion 7 in the C direction. this is,
The pressure oil flowing out from the second communication hole 13 having a large diameter and a large opening area has a slower flow velocity than that of the first communication hole 12, and the seat portion 7 is located at a position facing the second communication hole 13. Because it is. However, the direction of flow of the pressure oil flowing out from the second communication hole 13 in the C direction along the seat portion 7 is changed by the pressure oil flowing out from the first communication hole 12 in the B direction at high speed. That is, the pressure oil that has flowed out from the first communication hole 12 at a high speed is struck by the pressure oil that has flowed out from the second communication hole 13 along the seat portion 7.
The pressure oil flowing out of the communication hole 13 is bent in a direction substantially perpendicular to the lift direction of the valve body 5.
【００１８】このように第２連通孔１３から流出した圧
油を、弁体５のリフト方向に対してほぼ垂直のＢ方向に
向ければ、圧油の流出方向と反対方向に作用する流体力
Ｆが、弁体５のリフト方向に対して垂直の方向となる。
このように流体力Ｆを弁体５のリフト方向に対してほぼ
垂直の方向にすれば、流体力Ｆによって弁体５に作用す
る閉じ方向の力がほとんどなくなる。そのため、弁体５
のリフト量が多くなったときでも、流体力の影響で弁体
５が閉じることはない。つまり、この実施形態によれ
ば、弁体５が大きくリフトしたときに、流入側流路３か
ら流出側流路４へ流れる流体の圧力損失が大きくなると
いう問題を防止できる。If the pressure oil flowing out from the second communication hole 13 is directed in the direction B, which is substantially perpendicular to the lift direction of the valve body 5, the fluid force F acting in the direction opposite to the pressure oil flowing direction is obtained. Is a direction perpendicular to the lift direction of the valve body 5.
When the fluid force F is made substantially perpendicular to the lift direction of the valve body 5 in this way, the force in the closing direction acting on the valve body 5 by the fluid force F is almost eliminated. Therefore, the valve body 5
Even when the lift amount of the valve is increased, the valve body 5 is not closed due to the influence of the fluid force. That is, according to this embodiment, it is possible to prevent the problem that the pressure loss of the fluid flowing from the inflow side flow path 3 to the outflow side flow path 4 increases when the valve body 5 is lifted greatly.
【００１９】また、この実施形態では、弁体５がフルリ
フトしたときに、第１連通孔１２がシート部７の上面７
ａよりも上方に位置するようにしているが、第１連通孔
１２がシート部７の上面７ａよりも下方にある場合で
も、第１連通孔１２から圧油を高速で流出させているの
で、その勢いによって第２連通孔１３から流出する圧油
の向きをある程度矢印Ｂ方向に向けることができる。つ
まり、第１連通孔１２がシート部７の上面７ａよりも上
方に位置していなくても、弁体５に作用する閉じ方向の
流体力を軽減することができる。Further, in this embodiment, when the valve body 5 is fully lifted, the first communication hole 12 causes the upper surface 7 of the seat portion 7 to move.
Although it is positioned above a, the pressure oil is discharged from the first communication hole 12 at a high speed even when the first communication hole 12 is below the upper surface 7a of the seat portion 7. Due to the momentum, the direction of the pressure oil flowing out from the second communication hole 13 can be oriented in the arrow B direction to some extent. That is, even if the first communication hole 12 is not located above the upper surface 7a of the seat portion 7, the fluid force in the closing direction acting on the valve body 5 can be reduced.
【００２０】なお、この実施形態では、リフト量を調整
可能にしているが、この発明としては、リフト量を調整
可能にしなくてもよい。すなわち、室８を流出側流路４
に接続して、通常のロードチェック弁と同様の構成にし
てもよい。Although the lift amount is adjustable in this embodiment, the lift amount may not be adjustable in the present invention. That is, the chamber 8 is connected to the outflow side flow path 4
The load check valve may have the same structure as the normal load check valve.
【００２１】[0021]
【発明の効果】第１の発明によれば、径方向に形成した
小径の第１連通孔から流出する圧油の向きを、弁体のリ
フト方向と垂直にするとともに、この第１連通孔から流
出した圧油の勢いによって、第２連通孔から流出する圧
油の向きも、弁体のリフト方向とほぼ垂直になるように
した。第１、第２連通孔から流出する圧油の向きを、弁
体のリフト方向とほぼ垂直にしたので、閉じ方向の流体
力が弁体にほとんど作用しない。したがって、弁体のリ
フト量が多くなったときでも、弁体が閉じたりせず、弁
体が閉じることによって生じていた圧力損失の増加を防
止できる。According to the first aspect of the invention, the direction of the pressure oil flowing out from the first communication hole having a small diameter formed in the radial direction is made perpendicular to the lift direction of the valve body, and the first communication hole is also provided. The direction of the pressure oil flowing out from the second communicating hole is set to be substantially perpendicular to the lift direction of the valve body by the force of the pressure oil flowing out. Since the direction of the pressure oil flowing out from the first and second communication holes is substantially perpendicular to the lift direction of the valve body, the fluid force in the closing direction hardly acts on the valve body. Therefore, even when the lift amount of the valve body increases, the valve body does not close and it is possible to prevent an increase in pressure loss caused by the closing of the valve body.
【００２２】第２の発明によれば、弁体が最上位置にリ
フトしたときに、シート部上面よりも上方に第１連通孔
が位置する構成にしたので、第１連通孔から流出する圧
油がシート部によって遮られることがない。したがっ
て、第１連通孔から流出する圧油を、弁体のリフト方向
に対してより垂直に流出させることができ、その分、弁
体が閉じることをより防止することができる。According to the second invention, when the valve body is lifted to the uppermost position, the first communication hole is located above the upper surface of the seat portion. Therefore, the pressure oil flowing out from the first communication hole is provided. Is not blocked by the seat. Therefore, the pressure oil flowing out from the first communication hole can be made to flow out more perpendicularly to the lift direction of the valve body, and the valve body can be further prevented from closing by that amount.
【図１】この発明の実施形態の断面図である。FIG. 1 is a sectional view of an embodiment of the present invention.
【図２】弁体５がリフトしたときの部分拡大図である。FIG. 2 is a partially enlarged view when the valve body 5 is lifted.
【図３】従来例の断面図である。FIG. 3 is a sectional view of a conventional example.
【図４】弁体５がリフトしたときの部分拡大図である。FIG. 4 is a partially enlarged view of the valve body 5 lifted.
Ｓ この発明の付勢手段に相当するスプリング ３ 流入側流路 ４ 流出側流路 ５ 弁体 ７ シート部 ７ａ シート部上面 １１ 突出部 １２ 第１連通孔 １３ 第２連通孔 S Spring equivalent to biasing means of the present invention 3 Inflow side flow path 4 Outflow side flow path 5 valve body 7 seats 7a Seat top 11 Projection 12 First communication hole 13 Second communication hole
Claims (2)
付けるとともに、この弁体がシート部に押し付けられた
状態で、流入側流路と流出側流路との連通を遮断するポ
ペット弁において、上記弁体の先端に、環状の突出部を
設けるとともに、この突出部の基端側に小径の第１連通
孔を径方向に形成し、突出部の先端側に大径の第２連通
孔を形成し、弁体がリフトするときに、上記第１連通孔
が流出側流路に開口した後、上記第２連通孔が流出側流
路に開口する構成にしたことを特徴とするポペット弁。1. A poppet valve for pressing a valve body against a seat portion by a biasing means and for blocking communication between an inflow side flow passage and an outflow side flow passage in a state where the valve body is pressed against the seat portion, An annular protrusion is provided at the tip of the valve body, a small diameter first communication hole is formed in the base end side of the protrusion in the radial direction, and a large diameter second communication hole is formed at the tip of the protrusion. A poppet valve, which is formed so that, when the valve body is lifted, the first communication hole is opened to the outflow side flow path, and then the second communication hole is opened to the outflow side flow path.
ート部上面よりも上方に、第１連通孔が位置する構成に
したことを特徴とする請求項１記載のポペット弁。2. The poppet valve according to claim 1, wherein the first communication hole is located above the upper surface of the seat portion when the valve body is lifted to the uppermost position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002025049A JP3978343B2 (en) | 2002-02-01 | 2002-02-01 | Poppet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002025049A JP3978343B2 (en) | 2002-02-01 | 2002-02-01 | Poppet valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003227571A true JP2003227571A (en) | 2003-08-15 |
| JP3978343B2 JP3978343B2 (en) | 2007-09-19 |
Family
ID=27747327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002025049A Expired - Fee Related JP3978343B2 (en) | 2002-02-01 | 2002-02-01 | Poppet valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3978343B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963252A (en) * | 2009-07-22 | 2011-02-02 | 萱场工业株式会社 | Overflow valve |
| US8242558B2 (en) | 2008-06-30 | 2012-08-14 | Sony Corporation | Semiconductor device and method for production of semiconductor device |
| KR20190061131A (en) * | 2017-11-27 | 2019-06-05 | 한국기계연구원 | Flow control poppet valve having a function of shock pressure control |
| CN110230707A (en) * | 2018-03-06 | 2019-09-13 | 株式会社电装 | Flow rate control valve |
| JP2022166300A (en) * | 2019-09-25 | 2022-11-01 | 日立建機株式会社 | flow control valve |
-
2002
- 2002-02-01 JP JP2002025049A patent/JP3978343B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8242558B2 (en) | 2008-06-30 | 2012-08-14 | Sony Corporation | Semiconductor device and method for production of semiconductor device |
| CN101963252A (en) * | 2009-07-22 | 2011-02-02 | 萱场工业株式会社 | Overflow valve |
| KR20190061131A (en) * | 2017-11-27 | 2019-06-05 | 한국기계연구원 | Flow control poppet valve having a function of shock pressure control |
| KR102050763B1 (en) * | 2017-11-27 | 2019-12-04 | 한국기계연구원 | Flow control poppet valve having a function of shock pressure control |
| CN110230707A (en) * | 2018-03-06 | 2019-09-13 | 株式会社电装 | Flow rate control valve |
| JP2022166300A (en) * | 2019-09-25 | 2022-11-01 | 日立建機株式会社 | flow control valve |
| JP7316423B2 (en) | 2019-09-25 | 2023-07-27 | 日立建機株式会社 | flow control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3978343B2 (en) | 2007-09-19 |
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