JP5487832B2 - Fluid valve and hydraulic pump and solenoid valve using the same - Google Patents

Fluid valve and hydraulic pump and solenoid valve using the same Download PDF

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Publication number
JP5487832B2
JP5487832B2 JP2009214185A JP2009214185A JP5487832B2 JP 5487832 B2 JP5487832 B2 JP 5487832B2 JP 2009214185 A JP2009214185 A JP 2009214185A JP 2009214185 A JP2009214185 A JP 2009214185A JP 5487832 B2 JP5487832 B2 JP 5487832B2
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valve
valve body
fluid
wall surfaces
outflow
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JP2011064237A (en
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隆 村山
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Advics Co Ltd
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Description

この発明は、車両ブレーキ用液圧制御装置などに採用する流体弁とそれを用いた液圧ポンプ及び電磁弁に関する。ここで言う流体弁は、流体の流れ方向を一方向に規制する目的などで採用される球状の弁体を備えた弁である。   The present invention relates to a fluid valve employed in a vehicle brake hydraulic pressure control device and the like, and a hydraulic pump and an electromagnetic valve using the fluid valve. The fluid valve referred to here is a valve including a spherical valve body that is employed for the purpose of regulating the flow direction of fluid in one direction.

例えば、前掲の車両ブレーキ用液圧制御装置は、動力駆動の液圧ポンプを有している。その液圧ポンプには、吐出液の逆流を防止する目的で吐出口に逆止弁が組み込まれている。その逆止弁の従来例として、例えば、下記特許文献１に開示されたものがある。   For example, the vehicle brake hydraulic pressure control device described above has a power-driven hydraulic pump. In the hydraulic pump, a check valve is incorporated in the discharge port for the purpose of preventing the backflow of the discharge liquid. As a conventional example of the check valve, for example, there is one disclosed in Patent Document 1 below.

その特許文献１に開示された流体弁（チェック弁）は、弁室に収納された球状の弁体に、伝達部材を経由してコイルばねの力を加え、その力で弁体を弁座に着座させている。また、弁体が弁座の座面から離れたときに弁室に連通する流入路に対して、弁室に流入した流体を下流に送り出す流出路を直角向き（流入路の軸線に対して流出路の軸線が直角をなす向き）に形成している。そしてさらに、伝達部材経由で弁体に加えるコイルばねの力の印加点を、流入路の軸線の延長線上から流出路が形成される側とは反対側に偏らせている。   The fluid valve (check valve) disclosed in Patent Document 1 applies a force of a coil spring to a spherical valve element housed in a valve chamber via a transmission member, and the valve element is used as a valve seat by the force. I'm seated. In addition, when the valve body is separated from the seat surface of the valve seat, the outflow path that sends the fluid flowing into the valve chamber downstream is perpendicular to the inflow path that communicates with the valve chamber (outflow with respect to the axis of the inflow path). The direction in which the axis of the road forms a right angle). Furthermore, the point of application of the force of the coil spring applied to the valve body via the transmission member is biased from the extension line of the axis of the inflow path to the side opposite to the side where the outflow path is formed.

特許文献１のチェック弁は、上記の構造により、受圧面に働く圧力差を受けて開弁位置に動いた弁体が前記コイルばねの力で弁室の流出路形成側の壁面に押し付けられる。このときの弁体は、弁座と、弁室の壁面と、コイルばねの力を受けた伝達部材に３点で接触する。そのような接触状態を作り出すことで弁体の脈動による振動を抑制するようにしている。   In the check valve of Patent Document 1, due to the structure described above, the valve element that has moved to the valve opening position due to the pressure difference acting on the pressure receiving surface is pressed against the wall surface on the outflow passage forming side of the valve chamber by the force of the coil spring. The valve body at this time comes into contact with the valve seat, the wall surface of the valve chamber, and the transmission member that receives the force of the coil spring at three points. By creating such a contact state, vibration due to pulsation of the valve body is suppressed.

特開２００４−０６８８１１号公報JP 2004-068811 A

上記特許文献１のチェック弁は、弁体が、流出路の軸線と平行な面上において、弁座、弁室の壁面及び伝達部材に接触する。加えて、伝達部材はボールなどを用いた可動部材であり、弁室に導入される流体圧が急激に変動するとその可動部材が変位するなどの虞もある。そのために、開弁位置での弁体の固定が安定せず、弁体の振動抑制が不十分になる虞がある。   In the check valve of Patent Document 1, the valve body contacts the valve seat, the wall surface of the valve chamber, and the transmission member on a surface parallel to the axis of the outflow path. In addition, the transmission member is a movable member using a ball or the like. If the fluid pressure introduced into the valve chamber fluctuates rapidly, the movable member may be displaced. For this reason, the valve body is not stably fixed at the valve opening position, and vibration suppression of the valve body may be insufficient.

特許文献１のチェック弁は、上記の理由により、ピストンポンプの脈動に対しても不安が残る。また、ポンプの吐出量が増加し、チェック弁を通過する流体の量が増加することで、弁体の周りの流体の流れが乱れ、弁体が振動する可能性が高くなる。その振動が激しいと、弁体や弁座に打痕(傷)がつき、弁部のシール性が失われることがある。   The check valve of Patent Document 1 remains uneasy about the pulsation of the piston pump for the above-described reason. In addition, since the pump discharge amount increases and the amount of fluid passing through the check valve increases, the flow of fluid around the valve body is disturbed, and the possibility that the valve body vibrates increases. If the vibration is severe, the valve body and the valve seat may have dents (scratches) and the sealing performance of the valve part may be lost.

この発明は、弁体の振動が効果的に抑制されてポンプの吐出弁として用いたときに脈動を増幅することがなく、また、振動に起因した騒音も防止されるようにするために、チェック弁を通過する流体の量が増加するに伴い、弁体の周りの流体の流れが乱れやすくなる場合も弁体の開弁位置での支持が安定してなされるようにすることを課題としている。   In order to prevent the vibration of the valve body from being effectively suppressed and to amplify the pulsation when used as a pump discharge valve, and to prevent noise caused by the vibration. As the amount of fluid passing through the valve increases, even when the flow of fluid around the valve body is likely to be disturbed, it is an object to stably support the valve body at the valve opening position. .

上記の課題を解決するため、この発明においては、流体弁を、球状の弁体と、その弁体
を収納する弁室と、前記弁体を接離させる前記弁室に対面した弁座と、前記弁体が前記弁
座の座面から離れたときに前記弁室に連通する流入路と、その流入路から前記弁室に流入
した流体を下流に送り出す流出路を有し、
前記弁室の内面に、前記座面から離れた前記弁体を３点以上の箇所で支持する前記流入
路の軸線に対して傾いた複数の壁面が含まれ、前記壁面のひとつが前記弁座に、他の壁面が弁室にそれぞれ形成されており、その複数の壁面に対する前記弁体の当接点を結ぶ直線が多角形を画き、その多角形の中心と前記弁体が前記座面から離れて前記複数の壁面に３点以上の箇所で支持される位置にあるときの弁体中心を結ぶ線上に前記流出路が開口しているものにした。 In order to solve the above-described problems, in the present invention, the fluid valve includes a spherical valve body, a valve chamber that houses the valve body, a valve seat that faces the valve chamber that contacts and separates the valve body, and An inflow path that communicates with the valve chamber when the valve body is separated from the seat surface of the valve seat, and an outflow path that sends the fluid that has flowed into the valve chamber from the inflow path downstream.
The inner surface of the valve chamber includes a plurality of wall surfaces inclined with respect to the axis of the inflow passage that supports the valve element separated from the seat surface at three or more points, and one of the wall surfaces is the valve seat. In addition, other wall surfaces are respectively formed in the valve chamber, and a straight line connecting the contact points of the valve body with the plurality of wall surfaces defines a polygon, and the center of the polygon and the valve body are separated from the seat surface. Thus, the outflow passage is opened on a line connecting the valve body centers when the plurality of wall surfaces are supported at three or more points.

ここで言う弁体の当接点とは、弁体が弁室の壁面に点接触する箇所とは限らない。壁面が平面であれば弁体の当接は点に近い状態になるが、壁面の形状次第では弁室の複数の壁面に対して弁体が線接触或いは面接触することもある。そのような状況で弁体が弁室の壁面に当接する場合には接触部の中心を接触点と考え、その接触点を直線で結んだときに多角形が画かれる位置に支持面となる壁面を設置する。なお、この発明では、流入路側を上流、流出路側を下流と考える。   The contact point of the valve body referred to here is not necessarily the point where the valve body makes point contact with the wall surface of the valve chamber. If the wall surface is flat, the contact of the valve body is close to a point. However, depending on the shape of the wall surface, the valve body may be in line contact or surface contact with a plurality of wall surfaces of the valve chamber. In such a situation, when the valve body abuts against the wall surface of the valve chamber, the center of the contact portion is considered as the contact point, and the wall surface that becomes the support surface at the position where the polygon is drawn when the contact point is connected by a straight line Is installed. In the present invention, the inflow channel side is considered upstream and the outflow channel side is considered downstream.

この流体弁の好ましい形態を以下に列挙する。
（１）前記流出路が、前記複数の壁面に対する弁体当接点を結ぶ直線で画かれる前記多角
形の中心と前記弁体が前記座面から離れて前記複数の壁面に３点以上の箇所で支持される
位置にあるときの弁体中心を結ぶ線に対し、その流出路の軸線が一致する位置に配置され
たもの。
（２）前記弁体が開弁位置（座面から離れて複数の壁面に３点以上の箇所で支持される位
置）にあるときにその弁体の外周と前記弁室の内面との間に生じる流路の実質的な流路面
積を、前記流出路の軸直角断面での流路面積（以下では単に流出路の流路面積と言う）よ
りも小さくしたもの。
（３）前記複数の壁面に対する弁体当接点が３点でありその３点を結ぶ直線で画かれる多
角形が正三角形をなし、その正三角形の中心と前記弁体が前記座面から離れて前記複数の
壁面に３点で支持される位置にあるときの弁体中心を結ぶ線に対し、流出路の軸心が一致
する位置に前記流出路が配置されたもの。
（４）前記流出路が、前記流入路の軸線に対して傾きを持つ流路として形成されたもの。
（５）前記流出路が、前記流入路の軸線に対して直角をなす流路として形成されたもの。
（６）前記弁体を閉弁方向に付勢して前記弁座の座面に押し付ける付勢手段が含まれたも
の。
（７）前記流入路から前記流出路に向う流体の流れを許容し、逆流を阻止する逆止弁とし
て構成されたもの。 Preferred forms of this fluid valve are listed below.
(1) The center of the polygon defined by a straight line connecting valve body contact points to the plurality of wall surfaces and the valve body away from the seat surface at three or more points on the plurality of wall surfaces. It is arranged at the position where the axis of the outflow path coincides with the line connecting the center of the valve body when it is in the supported position.
(2) Between the outer periphery of the valve body and the inner surface of the valve chamber when the valve body is in a valve open position (a position that is supported by a plurality of wall surfaces apart from the seat surface). The substantial flow channel area of the generated flow channel is made smaller than the flow channel area in the cross section perpendicular to the axis of the outflow channel (hereinafter simply referred to as the flow channel area of the outflow channel).
(3) There are three valve element contact points with respect to the plurality of wall surfaces, and a polygon drawn by a straight line connecting the three points forms an equilateral triangle, and the center of the equilateral triangle and the valve element are separated from the seat surface. The outflow path is arranged at a position where the axial center of the outflow path coincides with a line connecting the valve body center when the plurality of wall surfaces are supported at three points.
(4) The outflow channel is formed as a channel having an inclination with respect to the axis of the inflow channel.
(5) The outflow path is formed as a flow path perpendicular to the axis of the inflow path.
(6) A biasing means that biases the valve body in the valve closing direction and presses the valve body against the seat surface of the valve seat is included.
(7) What was comprised as a non-return valve which accept | permits the flow of the fluid which goes to the said outflow path from the said inflow path, and prevents a backflow.

この発明は、上述した流体弁を吐出弁として吐出口に備えた液圧ポンプと、
磁気吸引力で作動させる弁体を弁座に接離させて通路を開閉する弁部を有し、その弁部を経由する流体通路と並列配置の迂回路に上述した流体弁を逆止弁として配置した電磁弁も併せて提供する。 The present invention includes a hydraulic pump provided at a discharge port using the above-described fluid valve as a discharge valve;
It has a valve part that opens and closes a passage by bringing a valve element operated by magnetic attraction force into and out of the valve seat, and the above-described fluid valve is used as a check valve in a bypass arranged in parallel with the fluid passage passing through the valve part. An arranged solenoid valve is also provided.

この発明の流体弁は、座面から離れて開弁位置に動いた弁体が、弁室の内面に設けられた複数の壁面に対して３点以上の箇所で押し当てられる。このときの壁面に対する弁体の当接点は、流出路と交差する面（仮想の面であり、弁室から流出路に向う流体の流れの方向に対して対面する）上に形成される。   In the fluid valve of the present invention, the valve element that has moved away from the seating surface to the valve opening position is pressed against the plurality of wall surfaces provided on the inner surface of the valve chamber at three or more points. The contact point of the valve body with respect to the wall surface at this time is formed on a surface intersecting with the outflow passage (a virtual surface facing the direction of fluid flow from the valve chamber toward the outflow passage).

また、流出路を、弁体の当接点を結ぶ直線で画かれる多角形の中心と弁体が複数の壁面に３点以上の箇所で支持される位置にあるときの弁体中心を結ぶ線上に開口させることで、弁室に流入した流体が弁体を流出路側に押す力が発生する。   Moreover, the outflow path is on a line connecting the center of the polygon defined by a straight line connecting the contact points of the valve body and the center of the valve body when the valve body is in a position supported by a plurality of wall surfaces at three or more points. By opening, the force which the fluid which flowed into the valve chamber pushes a valve body to the outflow path side generate | occur | produces.

従って、流体の流れを受けて流出路の軸線方向に押された弁体を押圧方向前方を遮る向きの面で受け止めるような状況が作り出され、また、弁体を受け支える壁面は固定された面であって流体圧の変動による変位が起こらず、このために、弁体の開弁位置での支持が安定し、弁体の振動が効果的に抑制される。この作用で、弁体の振動による脈動の増幅や、騒音の発生が防止される。   Therefore, a situation is created in which the valve body pressed in the axial direction of the outflow passage in response to the fluid flow is received by a surface in a direction that blocks the front in the pressing direction, and the wall surface that supports the valve body is a fixed surface. Thus, displacement due to fluctuations in fluid pressure does not occur, so that the support at the valve opening position of the valve body is stabilized, and vibration of the valve body is effectively suppressed. This action prevents pulsation amplification and noise generation due to the vibration of the valve body.

この流体弁は、弁体を当接させる弁室の壁面の流入路の軸線に対する傾きの角度を制御することで、弁体当接点を結ぶ直線で画かれる多角形の中心の位置を変動させることができる。その多角形の中心位置の設定に自由度を生じさせるため、及び開弁位置に移動した弁体に楔効果を付与可能となすために弁体を当接させる弁室の壁面を流入路の軸線に対して傾けた。   This fluid valve changes the position of the center of the polygon drawn by the straight line connecting the valve element contact points by controlling the angle of inclination of the valve chamber wall surface against which the valve element contacts with the axis of the inflow path. Can do. In order to create a degree of freedom in setting the center position of the polygon and to make it possible to impart a wedge effect to the valve body moved to the valve opening position, the wall surface of the valve chamber that abuts the valve body on the axis of the inflow path Tilted against.

なお、上記において好ましいとした形態の作用・効果は後に説明する。   The operation and effect of the preferred embodiment will be described later.

この発明の流体弁の一例を示す断面図Sectional drawing which shows an example of the fluid valve of this invention 図１のII−II線に沿った方向の断面図Sectional view along the line II-II in FIG. 参考例の流体弁を示す断面図Sectional view showing the fluid valve of the reference example 図３のIII−III線に沿った断面図Sectional view along line III-III in FIG. この発明の流体弁の他の例を示す断面図Sectional drawing which shows the other example of the fluid valve of this invention 参考例の流体弁の他の例を示す断面図Sectional drawing which shows the other example of the fluid valve of a reference example この発明の液圧ポンプの回路図Circuit diagram of hydraulic pump of the present invention この発明の電磁弁の回路図Circuit diagram of solenoid valve of the present invention

以下、添付図面の図１，図２，図５，図７，図８に基づいて、この発明の流体弁とそれを用いた液圧ポンプ及び電磁弁の実施の形態を説明する。図３、図４、図６は参考例である。 Embodiments of a fluid valve of the present invention, a hydraulic pump and an electromagnetic valve using the fluid valve will be described below with reference to FIGS. 1 , 2, 5, 7, and 8 of the accompanying drawings. 3, 4 and 6 are reference examples.

図１及び図２は、この発明の流体弁の第１の形態を示している。この流体弁１０は、逆止弁として利用されるものであって、球状の弁体１と、その弁体１を収納する弁室２と、弁体１を接離させる弁座３と、弁体１が弁座３の座面３ａから離れたときに弁室２に連通する流入路４と、その流入路４から弁室２に流入した流体を下流に送り出す流出路５とで構成されている。   1 and 2 show a first embodiment of the fluid valve of the present invention. The fluid valve 10 is used as a check valve, and includes a spherical valve body 1, a valve chamber 2 that houses the valve body 1, a valve seat 3 that contacts and separates the valve body 1, and a valve An inflow path 4 that communicates with the valve chamber 2 when the body 1 is separated from the seat surface 3a of the valve seat 3 and an outflow path 5 that sends the fluid that has flowed into the valve chamber 2 from the inflow path 4 downstream. Yes.

例示の流体弁１０は、弁室２に対面させる弁座３をハウジング６に一体形成したが、ハウジングと別体の弁座をハウジングに取り付けることも可能である。また、ハウジング６にケース７を固定し、そのケース７とハウジング６の一部とで弁室２を作り出したが、弁室２はハウジング６に一体に形成されたものであってもよい。   In the illustrated fluid valve 10, the valve seat 3 facing the valve chamber 2 is formed integrally with the housing 6, but a valve seat separate from the housing may be attached to the housing. Further, the case 7 is fixed to the housing 6 and the valve chamber 2 is created by the case 7 and a part of the housing 6. However, the valve chamber 2 may be formed integrally with the housing 6.

弁室２には、開弁位置に移動した（座面３ａから離れた）弁体１を３点以上の箇所で支持する複数の壁面が設けられている。図示の流体弁は、弁体１を図２に示すＡ、Ｂ，Ｃの３点で支持するものにしており、上記壁面はＦ１、Ｆ２、Ｆ３の３面が存在する。それ等の壁面に対する弁体当接点Ａ、Ｂ，Ｃを結ぶ直線は三角形を画く（図２参照）。その三角形の中心ＤＯと弁体１が開弁位置（図２の鎖線位置）にあるときの弁体中心ＢＯを結ぶ線上に流出路５が形成されている。 The valve chamber 2 is provided with a plurality of wall surfaces that support the valve element 1 moved to the valve opening position (away from the seating surface 3a) at three or more points. The illustrated fluid valve supports the valve body 1 at three points A, B, and C shown in FIG. 2, and the wall surface has three surfaces F 1 , F 2 , and F 3 . A straight line connecting the valve contact points A, B, and C with respect to these wall surfaces forms a triangle (see FIG. 2). An outflow path 5 is formed on a line connecting the triangular center D O and the valve body center B O when the valve body 1 is at the valve opening position (chain line position in FIG. 2).

その流出路５は、前記三角形の中心ＤＯと開弁位置の弁体中心ＢＯを結ぶ線とその流出路の軸線Ｌ２が一致するように形成すると好ましく、そうすることで、弁室に流入した流体が弁体を複数の壁面に押し付ける方向と弁室から流出路に向う流体の流れ方向を一致させて壁面に対する弁体の押し付けをより安定させることができる。 The outflow path 5 is preferably formed so that the line connecting the center D O of the triangle and the valve body center B O at the valve opening position coincides with the axis L2 of the outflow path, and thereby the flow into the valve chamber The direction in which the fluid presses the valve body against the plurality of wall surfaces and the flow direction of the fluid from the valve chamber toward the outflow path can be matched to further stabilize the pressing of the valve body against the wall surface.

弁室の壁面に対する弁体の当接点は４箇所以上あってもよく、その当接点を結ぶ直線で画かれる多角形が正多角形（図示のものは正三角形）であると、支持点の配置がバランスよくなされて弁体の支持安定性がよりよくなる。   There may be four or more contact points of the valve body with respect to the wall surface of the valve chamber, and if the polygon drawn by the straight line connecting the contact points is a regular polygon (the one shown is a regular triangle), the support points are arranged. Is balanced and the support stability of the valve body is improved.

例示の流体弁における壁面Ｆ１は、弁座３に形成されている。また、他の２つの壁面Ｆ２、Ｆ３はケース７に形成されている。壁面Ｆ１は、弁座の座面３ａを延長した面で構成されているが、全壁面がケース７に形成されていてもよい。 A wall surface F 1 in the illustrated fluid valve is formed in the valve seat 3. The other two wall surfaces F 2 and F 3 are formed in the case 7. Wall F 1 is configured by a surface obtained by extending the seat face 3a of the valve seat, all the walls may be formed in the case 7.

壁面Ｆ１は、図１において上側が流入路の軸線Ｌ１から離れる方向に傾き、壁面Ｆ２、Ｆ３は、図１において壁面Ｆ１が傾いた方向とは反対向きに傾いている。また、その壁面Ｆ２、Ｆ３は、さらに、図２において逆Ｖ字をなすように傾き、これにより、壁面Ｆ１，Ｆ２、Ｆ３間に、図１の右側よりも流出路５のある左側が狭くなる空間ができ、その空間に弁体１が押し込まれることで弁体１を所定箇所に位置決めする作用が生じる。この発明ではそれを楔効果と言う。この楔効果によって、開弁位置（図２の鎖線位置）にある弁体が、径方向に振れることがより効果的に抑制される。 Wall F 1, the upper is inclined in a direction away from the axis L1 of the inlet channel 1, the wall F 2, F 3 is inclined in the opposite direction to the direction inclined wall surface F 1 in FIG. 1. Further, the wall surfaces F 2 and F 3 are further inclined so as to form an inverted V shape in FIG. 2, whereby the wall surface F 1 , F 2 , and F 3 have an outflow path 5 between them rather than the right side in FIG. There is a space in which a certain left side is narrowed, and the valve body 1 is pushed into the space, so that the valve body 1 is positioned at a predetermined position. In the present invention, this is called the wedge effect. Due to the wedge effect, the valve body at the valve opening position (chain line position in FIG. 2) is more effectively suppressed from swinging in the radial direction.

図１の流体弁は、開弁位置にある弁体１と弁室２の内面との間に生じる流路８（図２）の総流路面積が流出路５の流路面積よりも小さい。そのために、弁室２の流体圧と流出路５の流体圧に差が生じ、その圧力差が弁体に有効に作用して弁体１を壁面Ｆ１〜Ｆ３に押し付ける力が大きくなる。従って、開弁位置での弁体保持がより安定する。 In the fluid valve of FIG. 1, the total flow path area of the flow path 8 (FIG. 2) generated between the valve body 1 in the valve opening position and the inner surface of the valve chamber 2 is smaller than the flow path area of the outflow path 5. For this reason, a difference is generated between the fluid pressure in the valve chamber 2 and the fluid pressure in the outflow passage 5, and the pressure difference effectively acts on the valve body to increase the force for pressing the valve body 1 against the wall surfaces F 1 to F 3 . Accordingly, the holding of the valve body at the valve opening position is more stable.

上述したように、弁体１を３点で弁室の壁面に当接させる構造は、弁体を当接させる壁面の数を最小限に抑えることができ、製造面、コスト面で有利になる。また、各壁面を上述した方向に傾けてそれらの壁面に押し当てられる弁体に楔効果を生じさせることも容易である。   As described above, the structure in which the valve body 1 is brought into contact with the wall surface of the valve chamber at three points can minimize the number of wall surfaces with which the valve body is brought into contact, which is advantageous in terms of manufacturing and cost. . It is also easy to produce a wedge effect on the valve bodies that are inclined against the wall surfaces by tilting each wall surface in the above-described direction.

図３の流体弁は、流出路５の弁室側開口回りに４つの壁面Ｆ１〜Ｆ４を形成し（図４参照）、その壁面Ｆ１〜Ｆ４に弁体１を当接させるようにしており、弁体の当接点がＡ，Ｂ，Ｃ，Ｄの４箇所に形成される。ここでは、それ等の当接点を直線で結んで画かれる多角形が正方形になるようにし、その正方形の中心と弁体１が開弁位置にあるときの弁体中心ＢＯを結ぶ線と同軸上に流出路５を配置している。 The fluid valve of FIG. 3 forms four wall surfaces F 1 to F 4 around the valve chamber side opening of the outflow passage 5 (see FIG. 4), and the valve body 1 is brought into contact with the wall surfaces F 1 to F 4. The contact points of the valve body are formed at four locations A, B, C, and D. Here, the polygon drawn by connecting these contact points with a straight line is made square, and is coaxial with the line connecting the center of the square and the valve body center BO when the valve body 1 is in the valve opening position. The outflow channel 5 is arranged above.

また、周方向に定ピッチで配置した壁面Ｆ１〜Ｆ４は、流出路５と同心の円錐面に沿う方向に傾けており、先に説明した楔効果も得られる。 Further, the wall surfaces F 1 to F 4 arranged at a constant pitch in the circumferential direction are inclined in a direction along a conical surface concentric with the outflow passage 5, and the wedge effect described above is also obtained.

なお、図５に示すように、この発明の流体弁には、弁体１を閉弁方向に付勢して弁座の座面３ａに押し付ける付勢手段（図のそれはコイルばね）９が含まれていてもよい。その付勢手段９があると、流体弁を流入路の軸線が垂直でない姿勢で使用することが可能になる。   As shown in FIG. 5, the fluid valve of the present invention includes a biasing means (that is, a coil spring in the figure) 9 that biases the valve body 1 in the valve closing direction and presses it against the seat surface 3a of the valve seat. It may be. With the urging means 9, the fluid valve can be used in a posture where the axis of the inflow path is not vertical.

流出路５は、流入路４の軸線Ｌ１に対して直角をなす図１の流路に限定されない。軸線
Ｌ１に対して９０°以外の角度での傾きを有する流路として形成されていてもよい。図３に示すように流入路４の軸線Ｌ１と流出路５の軸線Ｌ２が同軸上に配置されたものや、図６に示すように、流出路５が流入路４と平行位置に配置されたものは、本発明から除外する。 The outflow path 5 is not limited to the flow path of FIG. 1 that is perpendicular to the axis L1 of the inflow path 4. Even with respect to the axis L1 is formed as a channel having a slope at an angle other than 90 ° have good. As shown in FIG. 3, the axis L1 of the inflow channel 4 and the axis L2 of the outflow channel 5 are arranged on the same axis, or the outflow channel 5 is arranged in a position parallel to the inflow channel 4 as shown in FIG. Are excluded from the present invention.

前記流出路５が、流入路４の軸線Ｌ１に対して９０°或いはそれ以外の角度での傾きを持つ流路として形成されたものは、図５の付勢手段９の組み込みスペースを確保しやすい。
一般に、乱流による弁体の振動を抑制する上で、流路径を大きくして、流路面積を増やすことで、乱流自体の発生を抑えるところを、本発明の流体弁は、流路内の流れが乱流となっても開弁時の弁***置を安定させて振動による音の発生、脈動の増幅の低減を、流体弁その他の体格を大きくすることなく、実現できる。 When the outflow passage 5 is formed as a flow passage having an inclination of 90 ° or other angle with respect to the axis L1 of the inflow passage 4, it is easy to secure a space for incorporating the biasing means 9 in FIG. .
In general, in suppressing the vibration of the valve body due to turbulent flow, the flow valve diameter is increased and the flow channel area is increased to suppress the occurrence of turbulent flow itself. Even if the flow becomes turbulent, it is possible to stabilize the position of the valve body when the valve is opened and to reduce the generation of sound due to vibration and the reduction of pulsation amplification without increasing the size of the fluid valve.

以上説明したこの発明の流体弁は流入路から流出路に向う流体の流れを許容し、逆流を阻止する逆止弁として、或いは、液圧ポンプにおいて吐出した液体のポンプ室への逆流を阻止する吐出弁（これも逆止弁）として使用することができる。   The fluid valve of the present invention described above allows the flow of fluid from the inflow path to the outflow path and serves as a check valve that prevents backflow or prevents backflow of liquid discharged from the hydraulic pump to the pump chamber. It can be used as a discharge valve (also a check valve).

図７は、動力で駆動されて液体を吸入・吐出する液圧ポンプであり、吐出口に上述した流体弁１０を吐出弁として備えている。この液圧ポンプ１１は、ピストンポンプでもよいが、歯車ポンプなどの定量ポンプであるとこの発明の効果が顕著に発揮される。   FIG. 7 shows a hydraulic pump that is driven by power and sucks and discharges liquid, and includes the above-described fluid valve 10 as a discharge valve at the discharge port. The hydraulic pump 11 may be a piston pump, but if it is a metering pump such as a gear pump, the effect of the present invention is remarkably exhibited.

脈動が敬遠される用途では、液圧ポンプとして、ギヤポンプ、ベーンポンプ、スクリューポンプなどの定量ポンプが用いられる。その定量ポンプを使用しても、流量の増加により乱流域に達すると、乱流による流れの渦化が発生し、さらに流れが増えることで、渦が細かくなり、弁体が微振動し、それが増幅されて弁体が激しく振動することがある。これでは、弁部の耐久性に対する悪影響や騒音の発生が避けられず、高価な定量ポンプを使用する意味が薄れる。この発明の流体弁を吐出弁として備えることで、定量ポンプの利点が生かされる。   In applications where pulsation is avoided, metering pumps such as gear pumps, vane pumps, and screw pumps are used as hydraulic pumps. Even when the metering pump is used, when the turbulent flow region is reached due to an increase in flow rate, vortexing of the flow due to turbulence occurs, and the flow further increases, resulting in finer vortices and slight vibration of the valve body. May be amplified and the valve body may vibrate violently. As a result, adverse effects on the durability of the valve section and the generation of noise are unavoidable, and the meaning of using an expensive metering pump is lost. By providing the fluid valve of the present invention as a discharge valve, the advantages of the metering pump can be utilized.

図８は、磁気吸引力で作動させる弁体を弁座に接離させて通路を開閉する弁部（図示せず）を有し、その弁部を経由する流体通路と並列配置の迂回路１２ａに上述した流体弁１０が逆止弁として配置された電磁弁である。この電磁弁１２も発明品である。電磁弁でも、逆止弁を開弁させて流れる液体の流れが速いと乱流の発生が懸念される。この発明の流体弁を逆止弁として使用することで、その乱流に対する性能の安定化を図ることができる。   FIG. 8 has a valve portion (not shown) that opens and closes a passage by bringing a valve body operated by a magnetic attractive force into and out of contact with a valve seat, and a detour 12a arranged in parallel with a fluid passage passing through the valve portion. The above-described fluid valve 10 is an electromagnetic valve arranged as a check valve. This solenoid valve 12 is also an invention. Even with an electromagnetic valve, there is a concern that turbulence may occur if the flow of liquid flowing by opening the check valve is fast. By using the fluid valve of the present invention as a check valve, the performance against the turbulent flow can be stabilized.

この発明の流体弁は、ＡＢＳ（アンチロックブレーキシステム）、ＥＳＣ（Ｅｌｅｃｔｒｏｎｉｃ Ｓｔａｂｉｌｉｔｙ Ｃｏｎｔｒｏｌ）などの電子制御機能を備えた車両用ブレーキ液圧制御装置の回路構成部品やブレーキ液圧制御装置以外の液圧装置の回路構成部品として有効に利用することができる。   The fluid valve according to the present invention includes circuit components of a vehicle brake fluid pressure control device having an electronic control function such as ABS (anti-lock brake system), ESC (Electronic Stability Control), and fluid pressures other than the brake fluid pressure control device. It can be effectively used as a circuit component of the apparatus.

１ 弁体
２ 弁室
３ 弁座
３ａ 座面
４ 流入路
５ 流出路
６ ハウジング
７ ケース
８ 流路
９ 付勢手段
１０ 流体弁
１１ 液圧ポンプ
１２ 電磁弁
１２ａ 迂回路
Ｆ１〜Ｆ４ 弁体を当接させる弁室の壁面
Ａ〜Ｄ 壁面に対する弁体の当接点
ＤＯ 三角形の中心
ＢＯ 弁体中心
Ｌ１ 流入路の軸線
Ｌ２ 流出路の軸線 First valve body and second valve chamber 3 valve seat 3a seat surface 4 inlet channel 5 outflow passage 6 Housing 7 Case 8 passage 9 biasing means 10 fluid valve 11 of the hydraulic pump 12 solenoid valves 12a detour F 1 to F 4 valve body the axis of the center B O valve center L1 inlet channel axis L2 outflow tract of the contact point D O triangle of the valve element against the wall A~D wall of the valve chamber to abut

Claims (10)

球状の弁体と、その弁体を収納する弁室と、前記弁体を接離させる前記弁室に対面した弁座と、前記弁体が前記弁座の座面から離れたときに前記弁室に連通する流入路と、前記流入路から前記弁室に流入した流体を下流に送り出す流出路を有し、
前記弁室の内面に、前記座面から離れた前記弁体を３点以上の箇所で支持する前記流入路の軸線に対して傾いた複数の壁面が含まれ、前記壁面のひとつが前記弁座に、他の壁面が弁室にそれぞれ形成されており、その複数の壁面に対する前記弁体の当接点を結ぶ直線が多角形を画き、その多角形の中心と前記弁体が前記座面から離れて前記複数の壁面に３点以上の箇所で支持される位置にあるときの弁体中心を結ぶ線上に前記流出路が開口している流体弁。 A spherical valve body, a valve chamber housing the valve body, a valve seat facing the valve chamber for contacting and separating the valve body, and the valve body when the valve body is separated from the seat surface of the valve seat An inflow path communicating with the chamber, and an outflow path for sending the fluid that has flowed into the valve chamber from the inflow path downstream,
The inner surface of the valve chamber includes a plurality of wall surfaces inclined with respect to the axis of the inflow passage that supports the valve element separated from the seat surface at three or more points, and one of the wall surfaces is the valve seat. In addition, other wall surfaces are respectively formed in the valve chamber, and a straight line connecting the contact points of the valve body with the plurality of wall surfaces defines a polygon, and the center of the polygon and the valve body are separated from the seat surface. A fluid valve in which the outflow passage is open on a line connecting the center of the valve body when the plurality of wall surfaces are supported at three or more points. 前記流出路が、前記複数の壁面に対する弁体当接点を結ぶ直線で画かれる前記多角形の中心と前記弁体が前記座面から離れて前記複数の壁面に３点以上の箇所で支持される位置にあるときの弁体中心を結ぶ線に対し、その流出路の軸心が一致する位置に配置されたことを特徴とする請求項１に記載の流体弁。   The center of the polygon defined by a straight line connecting valve body contact points with the plurality of wall surfaces and the valve body are supported by the plurality of wall surfaces at three or more points away from the seat surface. The fluid valve according to claim 1, wherein the fluid valve is disposed at a position where the axial center of the outflow path coincides with a line connecting the center of the valve body at the position. 前記弁体が前記座面から離れて前記複数の壁面に３点以上の箇所で支持される位置にあるときにその弁体と前記弁室の内面との間に生じる流路の実質的な流路面積を、前記流出路の軸直角断面での流路面積よりも小さくしたことを特徴とする請求項１又は２に記載の流体弁。   A substantial flow of the flow path generated between the valve body and the inner surface of the valve chamber when the valve body is at a position supported by the plurality of wall surfaces at three or more points away from the seat surface. The fluid valve according to claim 1 or 2, wherein a passage area is smaller than a passage area in a cross section perpendicular to the axis of the outflow passage. 前記複数の壁面に対する弁体の当接点が３点でありその３点を結ぶ直線で画かれる多角形が正三角形をなし、その正三角形の中心と前記弁体が前記座面から離れて前記複数の壁面に３点で支持される位置にあるときの弁体中心を結ぶ線に対し、流出路の軸心が一致する位置に前記流出路が配置されたことを特徴とする請求項１又は３に記載の流体弁。   The contact point of the valve body with respect to the plurality of wall surfaces is three points, and a polygon drawn by a straight line connecting the three points forms an equilateral triangle, and the center of the equilateral triangle and the valve body are separated from the seating surface, 4. The outflow passage is arranged at a position where the axial center of the outflow passage coincides with a line connecting the valve body center when it is at a position supported at three points on the wall surface of the airflow passage. The fluid valve described in 1. 前記流出路が、前記流入路の軸線に対して傾きを持つ流路として形成されたことを特徴とする請求項１〜４のいずれかに記載の流体弁。   The fluid valve according to any one of claims 1 to 4, wherein the outflow path is formed as a flow path having an inclination with respect to an axis of the inflow path. 前記流出路が、前記流入路の軸線に対して直角をなす流路として形成されたことを特徴とする請求項１〜４のいずれかに記載の流体弁。   The fluid valve according to any one of claims 1 to 4, wherein the outflow path is formed as a flow path perpendicular to the axis of the inflow path. 前記弁体を閉弁方向に付勢して前記弁座の座面に押し付ける付勢手段が含まれたことを特徴とする請求項１〜６のいずれかに記載の流体弁。   The fluid valve according to claim 1, further comprising an urging unit that urges the valve body in a valve closing direction and presses the valve body against a seating surface of the valve seat. 前記流入路から前記流出路に向う流体の流れを許容し、逆流を阻止する逆止弁として構成されたことを特徴とする請求項１〜７のいずれかに記載の流体弁。   The fluid valve according to any one of claims 1 to 7, wherein the fluid valve is configured as a check valve that allows a fluid flow from the inflow path toward the outflow path and prevents backflow. 動力で駆動されて液体を吸入・吐出するポンプを有し、そのポンプの吐出口に請求項１
〜８のいずれかに記載の流体弁を吐出弁として備えた液圧ポンプ。 A pump that is driven by power and sucks and discharges liquid, and is provided at a discharge port of the pump.
A hydraulic pump comprising the fluid valve according to any one of -8 as a discharge valve. 磁気吸引力で作動させる弁体を弁座に接離させて通路を開閉する弁部を有し、その弁部
を経由する流体通路と並列配置の迂回路に請求項１〜８のいずれかに記載の流体弁が逆止弁として配置された電磁弁。 A valve element that opens and closes a passage by bringing a valve element operated by a magnetic attractive force into and out of contact with a valve seat, and a bypass arranged in parallel with a fluid passage that passes through the valve part, according to any one of claims 1 to 8. A solenoid valve in which the fluid valve described is arranged as a check valve.
JP2009214185A 2009-09-16 2009-09-16 Fluid valve and hydraulic pump and solenoid valve using the same Expired - Fee Related JP5487832B2 (en)

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