JPS61228177A - Valve - Google Patents

Abstract

PURPOSE:To provide a valve which eliminates an O-ring and enables control of high pressure fluid by means of a slight force, by a method wherein a check valve and a control valve are situated in a control passage through which a rear chamber is communicated with the outside of a valve chamber. CONSTITUTION:When a control valve 16 is opened under a state in that pressurized fluid is communicated with either side port 12, a control passage 14 is opened, and a pressure in a rear chamber 9 is decreased over that in a front chamber 8. This causes the valve body 6 to be moved in the direction of the rear chamber 9 away from a valve seat 2 to open a shaft port 4. The pressurized fluid entering a shaft passage 5 presses other valve body 6, positioned facing the one valve body, and is moved against a spring 10 to open the shaft port 4. Since ports 12 are communicated with each other, and the pressurized fluid flows from the one side port 12 to the other port 12. On order to stop the flow, the control valve 16 is closed. In which case, the control passage 14 is closed, a pressure in the rear chamber 9 is adjusted to a value equal to that in the front chamber 8, the lower pressure of the rear chamber 9 is dissipated, and the valve body 6 is pressed by the dint of the spring 10 and is seated to a valve seat 2 to close the shaft port 4. As a result, the valve body 6 is also energized through the force of the spring 10 and is seated to the valve seat 2.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は各種油圧装置、水圧装置等の流体圧装置に用
いられるパルプに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to pulp used in fluid pressure devices such as various hydraulic devices and water pressure devices.

従来の技術 従来この種のパルプとして矛９図に示すようなものが広
く用いられている。同図くおいて、ａは本体であり、こ
れに円筒状の弁室すが形成されている。Ｃは断面円状の
弁座、ｄは弁体を示す。又ｅは作動杆、ｆは０リング、
ｇはソレノイド、ｈは側口、ｉは細口、ｊはばね、ｋは
受座、ｔは摺動部である。BACKGROUND OF THE INVENTION Conventionally, as this type of pulp, the one shown in Figure 9 has been widely used. In the figure, a denotes a main body, in which a cylindrical valve chamber is formed. C indicates a valve seat with a circular cross section, and d indicates a valve body. Also, e is the operating rod, f is the 0 ring,
g is a solenoid, h is a side port, i is a narrow port, j is a spring, k is a seat, and t is a sliding part.

圧油等の加圧流体は側口りから供給されるが、図示の状
態では細口ｉに連通されない。ソレノイド−ｇを作用さ
せて、弁体ｄを矢印Ａｄ方向に移動させると、弁体ｄは
弁座Ｃを離れ、側口りと細口ｉは連通して加圧流体が流
通する。ただし細口ｉから側口り方向くは、加圧流体は
流通するようになっている。Pressurized fluid such as pressurized oil is supplied from the side port, but in the illustrated state it is not communicated with the narrow port i. When the solenoid -g is actuated to move the valve body d in the direction of the arrow Ad, the valve body d leaves the valve seat C, and the side opening and narrow opening i communicate with each other, allowing pressurized fluid to flow therethrough. However, the pressurized fluid is configured to flow from the narrow opening i toward the side opening.

発明が解決しようとする問題点 上記装置は次のような問題点を有している〇と摺動部を
間に固層状態となり、弁作動が不良となることである。Problems to be Solved by the Invention The above-mentioned device has the following problems: A solid state forms between the 〇 and the sliding portion, resulting in poor valve operation.

この発明は上記の問題を解決するためになされたもので
、この発明の目的は、上記従来例に述べたよっなＯリン
グによる弁作動の不良となることのない、パルプを提供
することである。又他の目的はきわめて僅かの力で圧力
の高い流体を制御できるパルプを提供することである。This invention has been made to solve the above-mentioned problems, and an object of the invention is to provide a pulp that does not cause valve operation defects due to O-rings as described in the above-mentioned conventional example. Another object is to provide a pulp that can control high pressure fluids with very little force.

Ｒ１を解決するための手段 この発明を、実施例な示す図面について述べると、矛１
図において、それぞれ円筒状に形成された弁室１を有し
、かつ軸方向の一側に弁座２を有す石二つのスリーブ３
；前記各弁座２にそれぞれ連通する細口４を、互に連通
させた軸通路５；前記多弁室１にそれぞれ摺動自在に収
容された弁体６；前記両スリーブ３に、前記弁座２の反
対側に、それぞれ設けられた受座７；前記両弁室１の、
弁座２と弁体６間ンζそれぞれ形成された１１１迩８：
前記各弁体６と受座７間にそれぞれ形成された後室９；
前記弁体６と受座７間に設けられたばねｌＯ；前記両ス
リーブ３の側壁１１で、前記前室７にそれぞれ開口する
側口１２；前記各前室８とφ室９をそれぞれ連通させる
、前記側口１２より断面積の小さい連通路１３；前記ｉ
４後室９にそれぞれ開口させて形成された後室９と弁室
１の外部を連通ずる制御通ｗＩ１４；該両制御通路１４
にそれぞれ設けられた逆止弁１５；前記制御通路１４で
、前記逆止弁１５の下流に設けられた制御弁１６から成
ることを特徴とするパルプである〇 そして前記弁体６は矛１図及び矛２図に示すように球状
に、又は牙６図に示すようにほぼ球状に、又は矛４図に
示すように、半球状の頭部１８と、胴部１９とから成る
ものであってもよく、又は、１’５図に示すように円錐
又は円錐台状の端部田と、幹部２１とから成るものであ
ってもよい。Means for Solving R1 This invention will be described with reference to embodiments and drawings.
In the figure, two sleeves 3 each have a cylindrical valve chamber 1 and a valve seat 2 on one side in the axial direction.
; A shaft passage 5 in which the narrow openings 4 communicating with each of the valve seats 2 communicate with each other; Valve bodies 6 slidably accommodated in the multiple valve chambers 1 ; Both the sleeves 3 have the valve seats 2 in communication with each other; a seat 7 provided on the opposite side of both valve chambers 1;
111 and 8 formed between the valve seat 2 and the valve body 6:
a rear chamber 9 formed between each of the valve bodies 6 and the seat 7;
a spring lO provided between the valve body 6 and the seat 7; a side port 12 that opens into the front chamber 7 in the side wall 11 of both sleeves 3; and a side port 12 that opens into the front chamber 7, respectively, which allows the front chamber 8 and the φ chamber 9 to communicate with each other. a communicating path 13 having a smaller cross-sectional area than the side port 12; the i
4 control passages wI14 which are formed by opening into the rear chamber 9 and communicate the rear chamber 9 with the outside of the valve chamber 1; both control passages 14;
check valves 15 provided in each of the control passages 14; and a control valve 16 provided downstream of the check valves 15 in the control passage 14; It consists of a spherical head 18 as shown in Figure 2, a substantially spherical head 18 as shown in Figure 6, or a hemispherical head 19 as shown in Figure 4. Alternatively, as shown in Figure 1'5, it may consist of a conical or truncated conical end portion and a trunk 21.

又前記連通＃　１３は矛１図に示すよ５にスリーブ３の
外側に形成されて、スリーブ３の側壁１１に開口して形
成されてもよく、又は、牙５図に示すように弁体６に形
成されていてもよい。又前記制御通路１４は一例として
ドレン通＃Ｉ４ａに連通されている。Further, the communication #13 may be formed on the outside of the sleeve 3 at 5 as shown in Figure 1 and opened at the side wall 11 of the sleeve 3, or it may be formed in the valve body 6 as shown in Figure 5. may be formed. Further, the control passage 14 is communicated with a drain passage #I4a, for example.

作用 いま、どちらか一方の側口１２に加圧流体が連通されて
おり、他方の側口１２に連通ずる流体は加圧されてない
と仮定する。この状態においては弁体６はばねｌＯによ
り弁座２（／Ｃ密接しており加圧流体は前室８、後室９
、制御通路１４に満ち℃いるが、弁体６は開かない。次
にその状態において前記制御弁１６を開くと、制御通路
１４は開かれ、この結果前記後室９が、前室８に対し低
圧となる。これは前記連通８１３の断面積が側口１２の
断面積より小さいため、前室８と後室９は急速に同圧と
なるのが困難のためである。Operation It is now assumed that pressurized fluid is in communication with one of the side ports 12 and that the fluid communicating with the other side port 12 is not pressurized. In this state, the valve body 6 is in close contact with the valve seat 2 (/C) by the spring lO, and the pressurized fluid flows into the front chamber 8 and the rear chamber 9.
, the control passage 14 is full, but the valve body 6 does not open. Next, when the control valve 16 is opened in this state, the control passage 14 is opened, and as a result, the pressure in the rear chamber 9 becomes lower than that in the front chamber 8. This is because the cross-sectional area of the communication 813 is smaller than the cross-sectional area of the side port 12, so it is difficult for the front chamber 8 and the rear chamber 9 to quickly reach the same pressure.

この結果前記弁体６は弁座２から離れて、後室９方向１
ｃ移動し、細口４が開き、軸通ＨＩ５に入った加圧流体
は対応する他の弁体６を押圧してそのばね１０に逆らっ
て移動させ、その＠ｏ４を開かせる。こうして側口１２
相互は連通し、加圧４体は一方の側口１２から他の側口
１２に通行する。As a result, the valve body 6 is separated from the valve seat 2 and moved toward the rear chamber 9.
c moves, the narrow opening 4 opens, and the pressurized fluid that enters the shaft HI5 presses the corresponding other valve body 6 and moves it against its spring 10, opening its @o4. In this way, the side entrance 12
They communicate with each other, and the four pressurizing bodies pass from one side port 12 to the other side port 12.

次に、上記通行を停止させる場合は、前記制御弁１６を
閉止する。そうすると、制御通路１４が閉じられ、従っ
て前記後室９と前室８は短時間ののちに同圧となる。こ
のため後Ｍ９の低圧は消失し、弁体６はばね１０により
押されて弁座２に着座し、その軸口４は閉止させられる
。そして前記軸通路５は閉止される結果、対応する弁室
１の軸口４の圧力は消失し、対応する弁体６もそのばね
１０により付勢されてその弁座２に着座し、矛１図に示
す状態となる。Next, when stopping the traffic, the control valve 16 is closed. Then, the control passage 14 is closed, so that the rear chamber 9 and the front chamber 8 become at the same pressure after a short time. Therefore, the low pressure in the rear M9 disappears, the valve body 6 is pushed by the spring 10 and seats on the valve seat 2, and its shaft opening 4 is closed. As a result of the shaft passage 5 being closed, the pressure in the shaft port 4 of the corresponding valve chamber 1 disappears, and the corresponding valve body 6 is also urged by its spring 10 and seats on its valve seat 2, and the valve body 6 is also seated on its valve seat 2. The state shown in the figure will be reached.

実施例 矛１図において、その主要部の名称、作用は前記の通り
であるが、前記スリーブ３は一例としてカートリッジタ
イプに形成された。即ち、同図において受座７を回動し
、ケーシングｎとの螺合を解くことにより軸方向に抜脱
することができるようになっている。このように形成す
ることにより、スリーブ３の交換ができるようになって
いる。蓼は螺条、スは１［を示す。２はケーシングρに
設けられた付属ケーシングであり、この付属ケーシング
２５４Ｃ前記制御弁１６が設けられている。そして制御
弁１６は一例として手動弁が示されているが、同舟１６
は電磁弁その他任意の形式の弁が用いられてよい。又、
制御通路１４は一例としてドレーン通路１４ａＫ連通し
ているが、これはその他適宜の通路忙連通させてもよい
。Embodiment In FIG. 1, the names and functions of the main parts are as described above, but the sleeve 3 is formed into a cartridge type as an example. That is, in the figure, by rotating the catch seat 7 and unscrewing it from the casing n, it can be removed in the axial direction. By forming it in this way, the sleeve 3 can be replaced.蓼 means spiral, and su means 1 [. 2 is an attached casing provided to the casing ρ, and this attached casing 254C is provided with the control valve 16. The control valve 16 is shown as a manual valve as an example;
A solenoid valve or any other type of valve may be used. or,
Although the control passage 14 communicates with the drain passage 14aK as an example, it may communicate with other appropriate passages.

３はボルト、ｌは０リング　を示す。又ドレーン通路１
４ａの開口部あは図示しないタンクに連通している。な
お四はＡポート、父はＢポート、３１はストッパを示す
。3 indicates bolt, l indicates 0 ring. Also, drain passage 1
The opening 4a communicates with a tank (not shown). Note that 4 represents the A port, father represents the B port, and 31 represents the stopper.

矛２図において制御弁１６は一例として矛３図に示すよ
うな中空の割れ管部が用いられた。In Figure 2, the control valve 16 is a hollow split pipe as shown in Figure 3, as an example.

この割れ管！を矢印Ａ３２方向に押すことにより制御弁
１６が開き、制御通Ｔｉ！！１１４が開通する。なお作
用は矛１図に示すものと同様である。This cracked pipe! By pushing in the direction of arrow A32, the control valve 16 opens and the control valve Ti! ! 114 is now open. The action is the same as that shown in Figure 1.

次に矛４図に示すものは、前記弁体６を、半球状の頭部
１８と、円柱状の胴部１９とにより形成したものであり
、この作用は球状又はほぼ球状の弁体６とほぼ同様であ
る。又矛５図く示すものは弁体６を、その端部Ｉを円錐
台状に形成し、これに円柱状の幹部２１を設けて形成し
たものである。なお前記端部加は円錐状に形成してもよ
（１口 次に牙６図に示すものは前記軸通路５に開口あを形成し
たものであり、かつ前記連通路１３を弁体６に形成した
ものである。又同図においてあは減速部材であり、弁体
６に螺着させられてあり、その正面は矛８図に示すよう
に形成され、溝あを有し、軸口４中を移動する際に１軸
口４中の図示しない流体を加圧することによって弁体６
を減速させ、着座の衝撃を緩和させるようになっている
。又同図において制御弁１６は電磁弁が示されている。Next, in the case shown in Figure 4, the valve body 6 is formed of a hemispherical head 18 and a cylindrical body 19. Almost the same. The valve body 6 shown in Figure 5 has an end I formed in the shape of a truncated cone, and a cylindrical trunk 21 provided thereon. Note that the end portion may be formed into a conical shape (the one shown in FIG. In the same figure, A indicates a deceleration member, which is screwed onto the valve body 6. Its front face is formed as shown in Figure 8, has a groove, and has a shaft opening 4. The valve body 6 is compressed by pressurizing the fluid (not shown) in the single shaft port 4 when moving inside.
It is designed to reduce the speed and reduce the impact of seating. Also, in the figure, the control valve 16 is shown as a solenoid valve.

次に、前記側口１２は、矛７図に示すように、スリーブ
３に対して放射状に形成された。このように形成するこ
とにより弁体６に及ぼす圧力を均等にすることができよ
う。Next, the side opening 12 is formed radially with respect to the sleeve 3, as shown in FIG. By forming it in this way, the pressure exerted on the valve body 6 can be made equal.

成したものによれば、着座が自動的に調整できるように
なっている。ちなみに球状又はほぼ球子４図又は才５図
に示す各弁体も同様である。According to what has been developed, the seating can be adjusted automatically. Incidentally, the same applies to each valve body shown in Fig. 4 or Fig. 5, which is spherical or almost spherical.

又前記弁体６は、その硬度が弁座２より高く形成された
。このように形成することにより、使用の初期において
、弁体６の衝撃により弁座２がかすかながら変形し、着
座が良好になるようになっている。Further, the valve body 6 is formed to have a higher hardness than the valve seat 2. By forming the valve in this manner, the valve seat 2 is slightly deformed by the impact of the valve body 6 at the initial stage of use, so that the valve seat 2 is properly seated.

発明の効果 この発明は上記のように構成され、前記従来例に示す摺
動する０リングｆを省略することができるから、前記従
来例に述べたような、本体ａに対するＯリングｆが固層
するという問題のない、パルプを提供することができる
。Effects of the Invention This invention is constructed as described above, and since the sliding O-ring f shown in the conventional example can be omitted, the O-ring f relative to the main body a as described in the conventional example It is possible to provide pulp without the problem of

又、制御弁１６を開閉する僅かな乃で、圧力の高い加圧
流体を容易に制御することができる。Further, the pressurized fluid with high pressure can be easily controlled with a small amount of opening and closing of the control valve 16.

矛１図はこの発明の実施例を示すパルプの断面図、矛２
図はこの発明の他の実施例を示すパルプの断面図、矛３
図は矛２図の部分の拡大図、ｊｐ４図はこの発明の更に
他の実施例を示すパルプの部分の断面図、矛５図はこの
発明の更（他の実施例を示す矛４図に相当する図、矛６
図は同じく更に他の発明を示すパルプの断面図、矛７図
は矛１図に示すパルプの部分の断面図、才８図は矛６図
の部分の正面図、牙９図は従来のパルプの断面図である
。Figure 1 is a cross-sectional view of pulp showing an embodiment of this invention, Figure 2 is a cross-sectional view of pulp showing an embodiment of this invention.
The figure is a cross-sectional view of pulp showing another embodiment of the present invention.
The figure is an enlarged view of the part shown in Figure 2, Figure 4 is a sectional view of the pulp part showing still another embodiment of the present invention, and Figure 5 is a sectional view of the pulp part showing still another embodiment of the invention. Corresponding figure, spear 6
Figure 7 is a cross-sectional view of the pulp shown in Figure 1, Figure 8 is a front view of the part shown in Figure 6, Figure 9 is a conventional pulp. FIG.

１・・・弁室 ２・・・弁座 ３・・・スリー゛プ ４・・・細口 ５・・・軸通路 ６・・・弁体 ７・・・受座 ８・・・前室 ９・・・後室 ｌＯ・・・ばね １１・・・側壁 １２・・・側口 １３・・・連通路 １４・・・制御通路 １５・・・逆止弁 １６・・・制御弁1...Valve chamber 2...Valve seat 3...Sleep 4...Narrow mouth 5...Axle passage 6... Valve body 7... catch seat 8...Anteroom 9... back chamber lO...spring 11...Side wall 12...side entrance 13...Communication path 14...control passage 15...Check valve 16...control valve

Claims (1)

【特許請求の範囲】 １　それぞれ円筒状に形成された弁室（１）を有し、か
つ軸方向の一側に弁座（２）を有する二つのスリーブ（
３）；前記各弁座（２）にそれぞれ連通する軸口（４）
を、互に連通させた軸通路（５）；前記各弁室（１）に
それぞれ摺動自在に収容された弁体（６）；前記両スリ
ーブ（３）に、前記弁座（２）の反対側にそれぞれ設け
られた受座（７）；前記両弁室（１）の、弁座（２）と
弁体（６）間にそれぞれ形成された前室（８）；前記各
弁体（６）と受座（７）間にそれぞれ形成された後室（
９）；前記弁体（６）と受座（７）間に設けられたばね
（１０）；前記両スリーブ（３）の側壁（１１）で、前
記前室（７）にそれぞれ開口する側口（１２）；前記各
前室（８）と後室（９）をそれぞれ連通させる前記側口
（１２）より断面積の小さい連通路（１３）；前記両後
室（９）にそれぞれ開口させて形成された後室（９）と
、弁室（１）の外部とを連通する制御通路（１４）；該
両制御通路（１４）にそれぞれ設けられた逆止弁（１５
）；前記制御通路（１４）で、前記逆止弁（１５）の下
流に設けられた制御弁（１６）から成ることを特徴とす
るバルブ。 ２　前記弁体（６）は球状又はほぼ球状であることを特
徴とする特許請求の範囲第一項記載のバルブ。 ３　前記弁体（６）は半球状又はほぼ半球状の頭部（と
胴部（１９）から成ることを特徴とする特許請求の範囲
第１項記載のバルブ。 ４　前記弁体（６）は円錐又は円錐台状の頭部（２０）
と幹部（２１）から成ることを特徴とする特許請求の範
囲第１項記載のバルブ。 ５　前記連通路（１３）は前記スリーブ（３）の側壁（
１１）に開口して設けられていることを特徴とする特許
請求の範囲第１項乃至第４項いづれか記載のバルブ。 ６　前記連通路１３は弁体６に形成されていることを特
徴とする特許請求の範囲第１項乃至第４項いづれか記載
のバルブ。[Claims] 1. Two sleeves each having a cylindrical valve chamber (1) and a valve seat (2) on one side in the axial direction.
3); A shaft port (4) that communicates with each of the valve seats (2).
a shaft passageway (5) which communicates with each other; a valve body (6) slidably housed in each of the valve chambers (1); Seats (7) provided on opposite sides; Front chambers (8) formed between the valve seats (2) and the valve bodies (6) of both the valve chambers (1); Each of the valve bodies ( 6) and the rear chamber (7) formed between the seat (7).
9); A spring (10) provided between the valve body (6) and the seat (7); Side ports (11) each opening into the front chamber (7) in the side walls (11) of both the sleeves (3); 12); A communication passageway (13) having a smaller cross-sectional area than the side opening (12) that communicates each of the front chambers (8) and the rear chamber (9); formed by opening into each of the rear chambers (9); A control passage (14) communicating between the rear chamber (9) and the outside of the valve chamber (1); check valves (15) provided in both control passages (14), respectively;
); A valve characterized in that it comprises a control valve (16) provided downstream of the check valve (15) in the control passage (14). 2. The valve according to claim 1, wherein the valve body (6) is spherical or approximately spherical. 3. The valve according to claim 1, characterized in that the valve body (6) comprises a hemispherical or approximately hemispherical head (and body part (19)).4. Conical or truncated conical head (20)
2. Valve according to claim 1, characterized in that it comprises a stem (21) and a stem (21). 5 The communication path (13) is connected to the side wall (
11) The valve according to any one of claims 1 to 4, characterized in that the valve is provided with an opening in the valve. 6. The valve according to any one of claims 1 to 4, wherein the communication passage 13 is formed in the valve body 6.