JPS6224668B2 - - Google Patents
Info
- Publication number
- JPS6224668B2 JPS6224668B2 JP8636879A JP8636879A JPS6224668B2 JP S6224668 B2 JPS6224668 B2 JP S6224668B2 JP 8636879 A JP8636879 A JP 8636879A JP 8636879 A JP8636879 A JP 8636879A JP S6224668 B2 JPS6224668 B2 JP S6224668B2
- Authority
- JP
- Japan
- Prior art keywords
- spool
- stopper
- spring
- oil
- operated 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.)
- Expired
Links
- 238000007654 immersion Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 2
- 230000007246 mechanism Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Preventing Unauthorised Actuation Of Valves (AREA)
- Multiple-Way Valves (AREA)
- Magnetically Actuated Valves (AREA)
Description
【発明の詳細な説明】
本発明は油浸形電磁操作弁に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oil-immersed electromagnetically operated valve.
従来の油浸形電磁操作弁は、可動部にOリング
などのシール部分を持たないため、ソレノイドの
吸引力がすべて有効にスプールの操作力として働
くという利点がある反面、消磁時にスプールを切
換位置で確実に保持することが困難であつた。 Conventional oil-immersed electromagnetic operated valves do not have sealing parts such as O-rings in their movable parts, so they have the advantage that all the suction force of the solenoid effectively works as the operating force for the spool. It was difficult to hold it securely.
そこで、押棒に溝を設け、この溝にバネで付勢
されたボールあるいはU字形のバネ等を嵌合させ
ることにより、押棒を切換位置で確実に保持する
ようにしたいわゆるデテント機構を備えたものも
ある。 Therefore, the push rod is equipped with a so-called detent mechanism that securely holds the push rod at the switching position by providing a groove in the push rod and fitting a spring-loaded ball or U-shaped spring into the groove. There is also.
ところが、弁ストロークが1〜4mm程度の小型
の弁においては、押棒に溝を設けることは機構的
に無理が生じるとともに、バネに生じる応力振巾
も大きく、バネが破損しやすいという問題があ
る。しかも、油浸形ではスプールと押棒とが分離
されているため、押棒に上記のごときデテント機
構を設けてもスプールの行き過ぎが生じやすく、
一旦スプールが行き過ぎると、反対側から切り換
える時にソレノイドの吸引力の弱いストロークの
大きい位置から切り換えなくてはならず、ハイド
ロリツクロツク現象などが起こりやすかつた。 However, in a small valve with a valve stroke of about 1 to 4 mm, it is mechanically difficult to provide a groove in the push rod, and the stress amplitude generated in the spring is also large, causing problems in that the spring is easily damaged. Moreover, in the oil immersion type, the spool and push rod are separated, so even if the push rod is equipped with the above detent mechanism, the spool tends to overshoot.
Once the spool has gone too far, when switching from the opposite side, it is necessary to switch from a position where the solenoid's suction force is weak and the stroke is large, making it easy for hydraulic lock phenomena to occur.
本発明は上記のごとき問題点に鑑みてなされた
もので、その目的は、スプールの行きすぎがな
く、切換位置で確実に保持することができ、小型
の弁でも機構的に無理がなく、しかも機差が少な
く安定したデテント機構を有する油浸形電磁操作
弁を提供することにある。 The present invention has been made in view of the above-mentioned problems.The purpose of the present invention is to prevent the spool from going too far, to be able to securely hold the spool in the switching position, and to be mechanically reasonable even with a small valve. It is an object of the present invention to provide an oil immersion type electromagnetic operated valve having a stable detent mechanism with little machine difference.
本発明は、前記目的を達成するために、本体内
部に形成された流体通路に軸方向に移動自在なス
プールを設け、ソレノイドの励磁により押棒を介
してスプールを移動させ、流体通路を切り換える
ようにした油浸形電磁操作弁を、軸方向に複数に
分割され、その内側面がスプールの端部外周面と
合致するとともに、外周部に突縁部を設けたスト
ツパと、ストツパの外周に圧着し、ストツパを内
方に付勢してストツパ内側面をスプールの端部外
周面に圧接させるバネ体とを設け、ストツパのス
プールへの圧接力によりスプールの行きすぎを防
止して切換位置に確実に保持するようにするとと
もに、ストツパの突縁部を本体に押し付けた状態
に保持するバネ材とから構成したものである。 In order to achieve the above object, the present invention provides a spool that is movable in the axial direction in a fluid passage formed inside a main body, and switches the fluid passage by moving the spool via a push rod by excitation of a solenoid. The oil-immersed electromagnetic operated valve is divided into a plurality of parts in the axial direction, the inner surface of which matches the outer circumferential surface of the end of the spool, and a stopper with a protruding edge on the outer circumference, and a stopper that is crimped onto the outer circumference of the stopper. , a spring body is provided which urges the stopper inward and presses the inner surface of the stopper against the outer circumferential surface of the end of the spool, and the pressure force of the stopper against the spool prevents the spool from going too far and ensures that it is in the switching position. It is constructed of a spring material that holds the stopper in a state in which the projecting edge of the stopper is pressed against the main body.
以下、本発明を一実施例である添付図面にした
がつて説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings, which are examples of the present invention.
第1図において、1は本体、2は本体1の両側
に設けられたソレノイド、3は端子台、4は端子
箱である。 In FIG. 1, 1 is a main body, 2 is a solenoid provided on both sides of the main body 1, 3 is a terminal block, and 4 is a terminal box.
本体1には4個のポートP,A,B,Tが設け
られており、かつ本体1の内部穴には流路を切り
換えるためのスプール10が摺動自在に挿通され
ている。すなわち、スプール10には2個の環状
突部11,12が設けられており、この環状突部
11,12が上記ポートP,A,B,Tの連通口
5,6,7,8を開閉し、流路を4方向に切り換
えるようになつている(第2図参照)。スプール
10の両端部13,13は若干小径となつてお
り、この両端部13,13を本体1に取付けられ
た2個のストツパ14,14が摺動可能に保持
し、デテント機構を構成している。 The main body 1 is provided with four ports P, A, B, and T, and a spool 10 for switching the flow path is slidably inserted into an internal hole of the main body 1. That is, the spool 10 is provided with two annular protrusions 11 and 12, and these annular protrusions 11 and 12 open and close the communication ports 5, 6, 7, and 8 of the ports P, A, B, and T. The flow path can be switched in four directions (see Figure 2). Both ends 13, 13 of the spool 10 have a slightly small diameter, and two stoppers 14, 14 attached to the main body 1 slidably hold these ends 13, 13, forming a detent mechanism. There is.
ストツパ14は第4図の如く中央孔15を有す
る円形のものを軸方向に二分割したもので、その
外周面には保持溝16を有し、側端部には大径な
突縁部17を有している。上記ストツパ14の保
持溝16にはC字形状の金属製バネ体18が嵌合
しており、このバネ体18によりストツパ14は
内方に付勢されて中央孔15の内側面がスプール
10の両側部13,13の外周面に圧接し、スト
ツパ14とスプール10との間に所定(たとえば
ソレノイド2の吸引力の約1/2)の摩擦力が作用
するようになつている。なお、バネ体18はC字
形状の板バネに限らず、リング状のコイルバネあ
るいはゴムリングであつてもよい。上記ストツパ
14の突縁部17はバネ材の一例である波板バネ
19により本体1の内端部9に押し付けられて保
持されており(第3図参照)、ストツパ14は上
記波板バネ19のバネ力に抗して径方向および軸
方向に若干移動可能である。 As shown in FIG. 4, the stopper 14 is a circular piece with a central hole 15 divided into two parts in the axial direction, and has a retaining groove 16 on its outer circumferential surface and a large diameter protrusion 17 on its side end. have. A C-shaped metal spring body 18 is fitted into the retaining groove 16 of the stopper 14, and the spring body 18 urges the stopper 14 inwardly so that the inner surface of the central hole 15 is aligned with the spool 10. It is in pressure contact with the outer circumferential surfaces of both side portions 13, 13, and a predetermined frictional force (for example, approximately 1/2 of the suction force of the solenoid 2) is applied between the stopper 14 and the spool 10. Note that the spring body 18 is not limited to a C-shaped plate spring, but may be a ring-shaped coil spring or a rubber ring. The protruding edge 17 of the stopper 14 is pressed and held against the inner end 9 of the main body 1 by a corrugated leaf spring 19, which is an example of a spring material (see FIG. 3). It is possible to move slightly in the radial and axial directions against the spring force of.
ソレノイド2は内部に可動鉄心20と固定磁極
21と該固定磁極21に一体的に溶接された耐圧
管22と励磁コイル23とを備え、上記固定磁極
21の中央孔には押棒24が摺動自在に挿通さ
れ、この押棒24を介して可動鉄心20に生じる
吸引力がスプール10に伝達される。押棒24は
第4図に示すごとく円棒をその外周面の対向する
部分を平面に切り落したもので、この押棒24と
固定磁極21の中央孔とのすき間を介して、本体
1とソレノイド2との内部空間に充満した油が連
通し、油浸形電磁操作弁を構成している。 The solenoid 2 includes a movable iron core 20, a fixed magnetic pole 21, a pressure tube 22 integrally welded to the fixed magnetic pole 21, and an excitation coil 23. A push rod 24 is slidably inserted into the central hole of the fixed magnetic pole 21. The suction force generated in the movable iron core 20 is transmitted to the spool 10 via the push rod 24 . As shown in FIG. 4, the push rod 24 is a circular rod with opposing parts of its outer circumferential surface cut off to make a flat surface. The internal space of the valve is communicated with oil, forming an oil-immersed electromagnetic operated valve.
つぎに、上記構成からなる油浸形電磁操作弁の
動作を説明する。 Next, the operation of the oil-immersed electromagnetically operated valve having the above structure will be explained.
第1図、第2図は図中左側のソレノイド2を励
磁した状態を示している。すなわち、左側のソレ
ノイド2の励磁にともない可動鉄心20は図中右
方に吸引され、押棒24を介してスプール10が
右方に移動し、スプール10の図中右側環状突部
11が連通孔6を開放するとともに連通口5を閉
鎖してポートPとポートAとを連通させ、図中左
側の環状突部12が連通口8を開放するとともに
連通口7を閉鎖してポートTとポートBとを連通
させる。そして、可動鉄心20が固定磁極21に
当接するとともにスプール10の移動も停止し、
ソレノイド2を消磁してもストツパ14との摩擦
力によつてその位置を保持しつづける。上記動作
において、スプール10は、ストツパ14との間
に働く摩擦力により常時ブレーキをかけられなが
ら移動するので、スプール10の行き過ぎがな
く、また、たとえスプール10の慣性力および流
体的な力によつてスプール10のみが行き過ぎよ
うとしても、図中右側のストツパ14の端面14
aとスプール10の図中右側の段部10aとが当
接して位置規制するため、スプール10は規定の
ストローク以上移動する心配がない(第2図参
照)。なお、波板バネ19はストツパ14の端面
14aとスプール10の段部10aとが当接した
際の衝撃を吸収する役割をも有している。 1 and 2 show a state in which the solenoid 2 on the left side of the figure is energized. That is, as the left solenoid 2 is energized, the movable iron core 20 is attracted to the right in the figure, the spool 10 is moved to the right via the push rod 24, and the annular protrusion 11 on the right side in the figure of the spool 10 moves into the communication hole 6. The annular protrusion 12 on the left side in the figure opens the communication port 8 and closes the communication port 7 to connect the ports T and B. communicate. Then, as the movable iron core 20 comes into contact with the fixed magnetic pole 21, the movement of the spool 10 also stops,
Even if the solenoid 2 is demagnetized, it continues to maintain its position due to the frictional force with the stopper 14. In the above operation, the spool 10 moves while being constantly braked by the frictional force acting between it and the stopper 14, so that the spool 10 does not go too far, and even if the spool 10's inertial force and fluid force Even if only the spool 10 tries to go too far, the end face 14 of the stopper 14 on the right side in the figure
a and the stepped portion 10a of the spool 10 on the right side in the drawing contact and regulate the position, so there is no fear that the spool 10 will move beyond a specified stroke (see FIG. 2). Note that the corrugated leaf spring 19 also has the role of absorbing the impact when the end surface 14a of the stopper 14 and the stepped portion 10a of the spool 10 come into contact with each other.
第1図右側のソレノイド2を励磁したときは、
上記と全く逆の動作によりスプール10は図中左
方に移動し、ポートPとポートBとが連通すると
ともに、ポートAとポートTとが連通する。 When solenoid 2 on the right side of Figure 1 is energized,
The spool 10 moves to the left in the figure by an operation completely opposite to the above, and ports P and B communicate with each other, and ports A and T communicate with each other.
上記実施例では、ストツパ14として円形のも
のを二分割したものを示したが、これに限らず三
分割あるいはそれ以上分割したものでもよい。 In the above embodiment, the stopper 14 is circular and divided into two parts, but the stopper 14 is not limited to this and may be divided into three or more parts.
以上の説明で明らかなように、本発明によれば
バネ体で付勢されたストツパとスプールとの間に
常に所定の摩擦力が作用するようにしたので、ス
プールの行き過ぎがなく、スプールは規定のスト
ロークを正確に移動し、ハイドロリツクロツク現
象等の不具合をきたす心配がない。しかも、スプ
ールは上記摩擦力により切換位置で確実に保持さ
れるため、従来のデテント機構のように押棒に溝
を設ける必要がなく、ストロークの短い小型の弁
においても、本発明は機構上何ら無理なく構成す
ることができる。 As is clear from the above explanation, according to the present invention, a predetermined frictional force is always applied between the stopper biased by the spring body and the spool. The stroke can be moved accurately, and there is no need to worry about problems such as hydraulic locking. Moreover, since the spool is reliably held at the switching position by the above-mentioned frictional force, there is no need to provide a groove on the push rod unlike in conventional detent mechanisms, and the present invention does not cause any mechanical problems even in small valves with short strokes. It can be configured without
また、上記摩擦力はバネ体の付勢力のみによつ
て生じ、かつ摩擦面がスプールの移動方向と同一
方向であるから、摩擦力のバラツキが少なく、安
定したデテント機構を得ることができるととも
に、バネ体の応力振巾も極めて小さく、したがつ
てバネ体の破損が少なく、長寿命でかつ信頼性の
高い油浸形電磁操作弁を得ることができる。 Further, since the frictional force is generated only by the biasing force of the spring body and the frictional surface is in the same direction as the moving direction of the spool, it is possible to obtain a stable detent mechanism with little variation in the frictional force, and The stress amplitude of the spring body is also extremely small, so that it is possible to obtain an oil-immersion type electromagnetic operated valve that has little damage to the spring body, has a long life, and is highly reliable.
第1図は本発明にかかる油浸形電磁操作弁の一
部断面正面図、第2図は第1図の要部の拡大断面
図、第3図は第1図の−線拡大断面図、第4
図は要部の斜視図である。
1……本体、2……ソレノイド、10……スプ
ール、10a……段部、13……端部、14……
ストツパ、14a……端面、16……保持溝、1
7……突縁部、18……バネ体、19……バネ材
(波板バネ)、24……押棒。
FIG. 1 is a partially sectional front view of an oil-immersed electromagnetic operated valve according to the present invention, FIG. 2 is an enlarged sectional view of the main part of FIG. 1, and FIG. 3 is an enlarged sectional view taken along the line - Fourth
The figure is a perspective view of main parts. 1...Body, 2...Solenoid, 10...Spool, 10a...Step, 13...End, 14...
Stopper, 14a... End face, 16... Holding groove, 1
7... Projection edge portion, 18... Spring body, 19... Spring material (corrugated sheet spring), 24... Push rod.
Claims (1)
移動自在なスプール10を設け、ソレノイド2の
励磁により押棒24を介してスプール10を移動
させ、流体通路を切り換えるようにした油浸形電
磁操作弁において、軸方向に複数に分割され、そ
の内側面がスプール10の端部13外周面と合致
するとともに、外周部に突縁部17を設けたスト
ツパ14と、ストツパ14の外周に圧着し、スト
ツパ14を内方に付勢してストツパ14内側面を
スプール10の端部13外周面に圧接させるバネ
体18と、ストツパ14の突縁部17を本体1に
押し付けた状態に保持するバネ材19とを備えた
ことを特徴とする油浸形電磁操作弁。 2 上記バネ材19は波板バネであることを特徴
とする特許請求の範囲第1項記載の油浸形電磁操
作弁。 3 スプール10に段部10aを設け、この段部
10aがストツパ14の端面14aと当接するよ
うに構成したことを特徴とする特許請求の範囲第
1項又は第2項記載の油浸形電磁操作弁。[Claims] 1. A spool 10 that is movable in the axial direction is provided in a fluid passage formed inside the main body 1, and the spool 10 is moved via a push rod 24 by excitation of the solenoid 2 to switch the fluid passage. The oil-immersed electromagnetic operated valve includes a stopper 14 which is divided into a plurality of parts in the axial direction, the inner surface of which matches the outer peripheral surface of the end 13 of the spool 10, and a stopper 14 provided with a protruding edge 17 on the outer peripheral part. A spring body 18 is crimped onto the outer periphery of the stopper 14 and urges the stopper 14 inward to bring the inner surface of the stopper 14 into pressure contact with the outer circumferential surface of the end 13 of the spool 10. An oil immersion type electromagnetic operated valve characterized by comprising a spring member 19 for maintaining the state. 2. The oil immersion type electromagnetically operated valve according to claim 1, wherein the spring material 19 is a corrugated plate spring. 3. The oil-immersion type electromagnetic operation according to claim 1 or 2, characterized in that the spool 10 is provided with a stepped portion 10a, and the stepped portion 10a is configured to abut against the end surface 14a of the stopper 14. valve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8636879A JPS5610874A (en) | 1979-07-07 | 1979-07-07 | Oil immersion type solenoid valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8636879A JPS5610874A (en) | 1979-07-07 | 1979-07-07 | Oil immersion type solenoid valve |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5610874A JPS5610874A (en) | 1981-02-03 |
JPS6224668B2 true JPS6224668B2 (en) | 1987-05-29 |
Family
ID=13884932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8636879A Granted JPS5610874A (en) | 1979-07-07 | 1979-07-07 | Oil immersion type solenoid valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5610874A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0239838A (en) * | 1988-07-29 | 1990-02-08 | Aakisutoriaru:Kk | Grip of fishing rod |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4353394A (en) * | 1981-02-27 | 1982-10-12 | Double A Products Co. | Solenoid operated directional valve with detent mechanism |
CN107504222B (en) * | 2017-09-13 | 2019-11-19 | 广西柳工机械股份有限公司 | Two solenoid valves of self-locking type |
-
1979
- 1979-07-07 JP JP8636879A patent/JPS5610874A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0239838A (en) * | 1988-07-29 | 1990-02-08 | Aakisutoriaru:Kk | Grip of fishing rod |
Also Published As
Publication number | Publication date |
---|---|
JPS5610874A (en) | 1981-02-03 |
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