JPS6228353B2 - - Google Patents
Info
- Publication number
- JPS6228353B2 JPS6228353B2 JP55130636A JP13063680A JPS6228353B2 JP S6228353 B2 JPS6228353 B2 JP S6228353B2 JP 55130636 A JP55130636 A JP 55130636A JP 13063680 A JP13063680 A JP 13063680A JP S6228353 B2 JPS6228353 B2 JP S6228353B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- passage
- chamber
- solenoid valve
- flow rate
- 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
- 239000012530 fluid Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 23
- 230000007423 decrease Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Fluid-Driven Valves (AREA)
- Magnetically Actuated Valves (AREA)
Description
【発明の詳細な説明】
本発明は電磁操作によつて大流量と小流量とに
切換えることの出来る電磁弁に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a solenoid valve that can be switched between a large flow rate and a small flow rate by electromagnetic operation.
例えば給油装置のように油すなわち液体の供給
に際してその供給量を正確にするために通常の給
液時には大流量を流し所定供給量（プリセツト
量）に近づくと、流量を絞つて小さくしている。
しかしながら従来装置によれば、例えば大流量用
弁と小流量用弁とを備えこれらを配管で並列して
接合したものが知られているが、この従来装置で
は規格の異なる弁を２個使用しなくてはならず、
又コスト高になり、更に複雑な配管をしているの
で設置ペースが大きくなつてしまうという欠点が
あつた。また配管が複雑になるので、例えばガソ
リンの場合漏洩による危険があつた。 For example, in an oil supply system, in order to accurately supply oil or liquid, a large flow rate is used during normal liquid supply, and when a predetermined supply amount (preset amount) is approached, the flow rate is throttled down.
However, conventional devices are known that include, for example, a large-flow valve and a small-flow valve and connect them in parallel with piping, but this conventional device uses two valves with different specifications. indispensable,
In addition, the cost is high, and since the piping is complicated, the installation pace becomes large. Furthermore, since the piping is complicated, there is a risk of leakage in the case of gasoline, for example.
例えば実公昭49−15297号公報に記載されてい
るように流量の大小を調節し得るように、並列な
流路を構成し、各流路にそれぞれ電磁弁を設けた
ものは知られているが、石油ストーブのように比
較的に少ない流量を制御する場合はとにかく、給
油所の給油装置のように比較的多量の流量を必要
とする場合は前述の欠点が生じてしまう。 For example, as described in Japanese Utility Model Publication No. 49-15297, it is known that parallel flow paths are constructed and each flow path is provided with a solenoid valve so that the magnitude of the flow rate can be adjusted. However, when a relatively small flow rate is controlled, such as in a kerosene stove, the above-mentioned drawbacks occur when a relatively large amount of flow rate is required, such as in a refueling device at a gas station.
したがつて本発明の目的は、規格が同じ電磁弁
を２個使用して大流量と小流量との切換えがで
き、しかもコンパクトで信頼性のある電磁弁を提
供するにある。 Therefore, an object of the present invention is to provide a compact and reliable solenoid valve that can switch between a large flow rate and a small flow rate by using two solenoid valves having the same standard.
本発明によれば、電磁操作によつて大流量と小
流量とに切換えることのできる電磁弁において、
流圧により開閉する主弁の背圧室と主弁の流入側
とを連通する極小流量の通路を設け、その背圧室
と主弁の流出側とを連通する第１の通路を設け、
その第１の通路に主弁の開閉を制御する第１の電
磁弁を設け、その第１の電磁弁の流出側通路に主
弁の流入側に連通する第２の通路と連通し、この
第２の通路に第２の電磁弁を設けてある。 According to the present invention, in a solenoid valve that can be switched between a large flow rate and a small flow rate by electromagnetic operation,
Providing an extremely low flow passage that communicates a back pressure chamber of a main valve that opens and closes with fluid pressure and an inflow side of the main valve, and providing a first passage that communicates the back pressure chamber with an outflow side of the main valve;
A first solenoid valve for controlling opening and closing of the main valve is provided in the first passage, and an outflow passage of the first solenoid valve communicates with a second passage communicating with the inflow side of the main valve. A second solenoid valve is provided in the second passage.
したがつて、第１および第２の電磁弁を開く
と、極小流量の通路を通つて主弁の背圧室に流入
した液は第１の通路を通つて主弁の流出側に流出
するので、背圧がなくなり主弁か開く。その際に
は大流量で供給される。その際に第２の通路は第
１の通路を介して流出側に連通しているので、第
１の通路にも液が流れている。 Therefore, when the first and second solenoid valves are opened, the liquid that has flowed into the back pressure chamber of the main valve through the extremely small flow passage will flow out to the outflow side of the main valve through the first passage. , the back pressure disappears and the main valve opens. At that time, it is supplied at a large flow rate. At this time, since the second passage communicates with the outflow side via the first passage, the liquid also flows through the first passage.
そこで第１の電磁弁を閉じると、背圧室と第１
の通路とが遮断されるので、背圧室の圧力が上昇
して主弁が閉じる。しかしながら、第２の電磁弁
が開いているので、第２の通路は第１の通路と連
通しており、主弁の流入側の液は第２の通路と第
１の通路とを通つて流出する。したがつてこのと
きは小流量である。 Therefore, when the first solenoid valve is closed, the back pressure chamber and the first solenoid valve are closed.
Since the passage is cut off, the pressure in the back pressure chamber increases and the main valve closes. However, since the second solenoid valve is open, the second passage communicates with the first passage, and the liquid on the inlet side of the main valve flows out through the second passage and the first passage. do. Therefore, the flow rate is small at this time.
そして第２の電磁弁を閉じると、第２の通路も
遮断されるので、液は流れない。 Then, when the second solenoid valve is closed, the second passage is also blocked, so no liquid flows.
以上の如く本発明によれば、背圧室に通じる極
小流量の流路と第１の通路と第２の通路とを組合
せることによつて、第１の電磁弁により主弁を開
閉し、第２の電磁弁により第２の通路を開閉する
ので、独立して大小の流量の切換えができ相互の
干渉がない。しかも全体的にコンパクトであり、
操作性にすぐれ、電磁弁も同一のものを使用でき
る。 As described above, according to the present invention, the main valve is opened and closed by the first electromagnetic valve by combining the extremely small flow path leading to the back pressure chamber, the first passage, and the second passage, Since the second passage is opened and closed by the second electromagnetic valve, the flow rate can be switched between large and small flow rates independently, and there is no mutual interference. Moreover, it is compact overall,
It has excellent operability, and the same solenoid valve can be used.
そのために、例えば給油装置において始めは大
流量で供給し、所定流量に近付いたときに小流量
とし、正確なプリセツト給液を行う場合に好適で
ある。 For this reason, it is suitable, for example, to perform accurate preset liquid supply by supplying liquid at a large flow rate at the beginning in a lubricating system, and then reducing the flow rate to a small flow rate when approaching a predetermined flow rate.
本発明の実施に際して極小流量の通路は主弁を
開閉するダイヤフラムに設けた小孔で構成するの
が好ましい。また第１の通路と第２の通路との連
通部分には共通室を設けるのが好ましい。 In carrying out the present invention, it is preferable that the extremely small flow passage be constituted by a small hole provided in a diaphragm that opens and closes the main valve. Further, it is preferable that a common chamber is provided in a communicating portion between the first passage and the second passage.
第１図は本発明を実施した電磁弁Ｖの一実施例
が示されており、入口側の管路Paから流入した
液例えばガソリンを出口側の管路Pbに流出する
に際して大流量、小流量および閉鎖の３つの機能
を有するものである。 FIG. 1 shows an embodiment of a solenoid valve V embodying the present invention, in which a large flow rate and a small flow rate are used when liquid such as gasoline flowing from an inlet pipe line Pa flows out to an outlet side pipe line Pb. It has three functions: and closure.
この電磁弁Ｖは管路部分１および本体部分２０
より成るものである。この管路部分１の入口側流
路６、および出口側流路８はそれぞれ固着手段、
例えば、ねじ３ａ，３ｂによつて管路Paおよび
Pbに連結されており、そして仕切体４で両流路
６，８が仕切られている。この出口側の流路８は
弁座５に圧着される主弁２ａで開閉されるように
なつており、この主弁２ａの開閉にはダイヤフラ
ム２が設けられると共にスプリング２２で常時閉
じる方向に押圧されている。 This solenoid valve V has a pipe section 1 and a main body section 20.
It consists of: The inlet side flow path 6 and the outlet side flow path 8 of this pipe section 1 are each provided with a fixing means,
For example, the pipes Pa and
Pb, and both channels 6 and 8 are separated by a partition 4. The flow path 8 on the outlet side is opened and closed by a main valve 2a that is pressed against the valve seat 5. A diaphragm 2 is provided to open and close the main valve 2a, and a spring 22 is used to constantly push it in the closing direction. has been done.
またダイヤフラム２には小孔２３が形成されて
いて入口側の流路６とダイヤフラム２に対して本
体部分２０側に形成した背圧室２１すなわちダイ
ヤフラム室とを連通している。この小孔の作用、
効果については後述するが一種のパイロツトの作
用をするものであり必ずしもダイヤフラム２に形
成する必要はなく、例えば小孔２３を設けずに別
の流路を形成してよい。 Further, a small hole 23 is formed in the diaphragm 2 to communicate the flow path 6 on the inlet side with a back pressure chamber 21 formed on the main body portion 20 side with respect to the diaphragm 2, that is, a diaphragm chamber. The action of this small hole,
The effect will be described later, but it acts as a kind of pilot, and it is not necessarily necessary to form it in the diaphragm 2. For example, a separate flow path may be formed without providing the small hole 23.
さて、本体部分では第１の弁２４と第２の弁２
５とが設けられている。これらの第１および第２
の弁２４，２５はその構造が実質的に同じである
ので、右側の第１の弁２４についてのみ説明す
る。第１の弁２４はそのケース２７にコイル２８
が収納され、その中心部にシリンダ２９がそして
シリンダ内にピストン３０が設けられている。本
発明の実施に際してコイルは周囲にエポキシ樹脂
などでモールデイングするのが好ましくまたピス
トン３０の作動に際して液体がシリンダ室３２に
切欠き３１を通つて自由に流れるようになつてい
る。従つてピストン３０はシリンダ室３２内の液
圧と、シリンダ室に設けられているコイルスプリ
ング３３とで弁座３４の方へ押圧されている。な
お、符号３５，３５′は合成ゴムなどから成る弁
体である。 Now, in the main body part, the first valve 24 and the second valve 2
5 is provided. These first and second
Since the valves 24 and 25 are substantially the same in structure, only the first valve 24 on the right side will be described. The first valve 24 has a coil 28 in its case 27.
is housed, a cylinder 29 is provided in the center thereof, and a piston 30 is provided within the cylinder. In the practice of the invention, the coil is preferably molded around the periphery, such as with epoxy resin, so that upon actuation of the piston 30, liquid flows freely into the cylinder chamber 32 through the notch 31. Therefore, the piston 30 is pressed toward the valve seat 34 by the hydraulic pressure within the cylinder chamber 32 and the coil spring 33 provided in the cylinder chamber. Note that reference numerals 35 and 35' indicate valve bodies made of synthetic rubber or the like.
本体部分２０には共通室３６が形成され、この
共通室は、通路９を介して出口側の流路８と連通
しておりそして共通室３６は第１および第２の弁
の弁体３５，３５′によつて液体を流さない時は
閉鎖されている。 A common chamber 36 is formed in the body part 20, which communicates with the outlet side flow path 8 via the passage 9, and the common chamber 36 is connected to the valve bodies 35 of the first and second valves, 35' is closed when no liquid is flowing.
本体部分２０には、また弁体３５，３５′が開
放されると共通室３６と連通する第１の室３７お
よび第２の室３８が形成されている。そして第２
の室３８は細通路７を介して管路部分１の入口側
の流路６に連通しており、また第１の室３７は通
路３９によつてダイアフラム室２１に連通してい
る。さらに第１の室３７は別の通路３９′と連通
しており、この通路３９′は手動弁４０を介して
共通室３６と連通している。この手動弁４０はノ
ブ４１を回転させて緩めると、第１の室３７と共
通室３６とが連通するようになつている。 The main body portion 20 is also formed with a first chamber 37 and a second chamber 38 which communicate with the common chamber 36 when the valve bodies 35, 35' are opened. and the second
The first chamber 38 communicates via a narrow passage 7 with the flow passage 6 on the inlet side of the conduit section 1, and the first chamber 37 communicates with the diaphragm chamber 21 via a passage 39. Furthermore, the first chamber 37 communicates with a further passage 39', which communicates with the common chamber 36 via a manual valve 40. This manual valve 40 is configured so that when a knob 41 is rotated and loosened, the first chamber 37 and the common chamber 36 communicate with each other.
図示の実施例において通路３９から第１の室３
７と共通室３６とを通つて通路９に至る通路は第
１の通路を構成しており、また入口側の流路６か
ら第２の室３８を通つて共通室３６に至る通路は
第２の通路を構成している。 In the embodiment shown, the passage 39 leads to the first chamber 3.
7 and the common chamber 36 to the passage 9 constitutes a first passage, and the passage from the inlet side passage 6 to the common chamber 36 through the second chamber 38 constitutes a second passage. It constitutes a passageway.
なお、第１の弁２４の弁体３５が開いた時に、
流路６から小孔２３を通つてダイアフラム室２１
内に流入する流体の量よりも、ダイアフラム室２
１から、通路３９、室３７、共通室３６および通
路９を通つて流路８に流出する量の方が多いよう
に管路を製作している。 Note that when the valve body 35 of the first valve 24 opens,
From the flow path 6 through the small hole 23 to the diaphragm chamber 21
The amount of fluid flowing into the diaphragm chamber 2
1, the conduit is constructed in such a way that the amount flowing out through the passage 39, the chamber 37, the common chamber 36 and the passage 9 into the channel 8 is greater.
本発明に係る電磁弁は、以上のように構成され
ており、以下その作用を第３図を参照して給油装
置において所定量（プリセツト量）を給油するた
めに実施した例を説明する。例えば10の油量を
給油する場合、まずプリセツト装置５０を10に
設定する。するとこのセツト量が制御回路５１に
伝わる。次に給油ノズル５２をノズル掛けから外
すと、ノズルスイツチ５３の信号がやはり制御回
路５１に伝わり、コイル２８，２８′を付勢す
る。その結果ピストン３０，３０′は吸引され第
１および第２の弁の弁体３５，３５′は開く。そ
れと同時に上記信号がモータ５４にも伝わり、ポ
ンプ５５が駆動される。 The electromagnetic valve according to the present invention is constructed as described above, and its operation will be described below with reference to FIG. 3 in an example in which it is used to supply a predetermined amount (preset amount) of oil in a refueling device. For example, when refueling with an oil amount of 10, first set the preset device 50 to 10. Then, this set amount is transmitted to the control circuit 51. Next, when the refueling nozzle 52 is removed from the nozzle hook, the signal from the nozzle switch 53 is also transmitted to the control circuit 51, which energizes the coils 28, 28'. As a result, the pistons 30, 30' are attracted and the valve bodies 35, 35' of the first and second valves are opened. At the same time, the above signal is also transmitted to the motor 54, and the pump 55 is driven.
このように準備が出来たところで、ノズルレバ
ー５６を操作してノズルバルブを開くとポンプ５
５から圧送された液体、例えばガソリンは第１図
の電磁弁Ｖの入口側流路６に流れる。さて、弁体
３５は開いているので、ダイヤフラム室２１の液
体は通路３９、第１室３７、共通室３６、通路９
を通つて圧力の低い出口側流路８に流れる。この
ように第１の弁２４が開くとダイヤフラム室２１
の液体は流出するがダイヤフラム室２１には液体
は小孔２３からのみ流入するのでダイヤフラム室
２１の圧力は低下する。その結果主弁２ａはスプ
リング２２に抗して上動するので入口側流路６と
出口側流路８とは連通し大流量で給油される。こ
の際、流路６から流路８には、弁体３５′が開い
ているから、細通路７から共通室３６を経て通路
９を介しても液体は流れる。 When preparations are completed in this way, operate the nozzle lever 56 to open the nozzle valve, and the pump 5
The liquid, for example gasoline, pumped from the solenoid valve V flows into the inlet side passage 6 of the solenoid valve V shown in FIG. Now, since the valve body 35 is open, the liquid in the diaphragm chamber 21 flows through the passage 39, the first chamber 37, the common chamber 36, and the passage 9.
and flows to the outlet side flow path 8 where the pressure is lower. When the first valve 24 opens in this way, the diaphragm chamber 21
The liquid flows out, but the liquid flows into the diaphragm chamber 21 only through the small hole 23, so the pressure in the diaphragm chamber 21 decreases. As a result, the main valve 2a moves upward against the spring 22, so that the inlet side flow path 6 and the outlet side flow path 8 are communicated with each other and oil is supplied at a large flow rate. At this time, since the valve body 35' is open from the channel 6 to the channel 8, the liquid also flows from the narrow channel 7 through the common chamber 36 and through the channel 9.
流量計５７で計量された給油量は、パルス発信
器５８により、パルス信号に変換され、そして表
示計５９に伝わり表示されると共にプリセツト装
置５０にも伝わりプリセツト量が減算される。 The amount of refueling measured by the flow meter 57 is converted into a pulse signal by the pulse transmitter 58, and transmitted to the display meter 59 for display, and also transmitted to the preset device 50, where the preset amount is subtracted.
残量が少くなると、例えば１になると、すな
わち給油量が９に達すると、プリセツト装置５
０から第１の弁２４のコイル２８への信号が断た
れ、その結果コイル２８は消勢し、弁体３５はス
プリング３３の作用で閉じる。するとダイヤフラ
ム室２１から液が流れないのでダイヤフラム室２
１の圧力が回復するので、液圧およびスプリング
２２の作用で主弁２ａが閉じる。従つてその後入
口側流路６の液体は細通路７、共通室３６、通路
９を通つて出口側流路８に流れる。この流れの通
路は狭いのでこのように最後の１は単位時間当
りの給油量が小量となり正確に計量供給が出来
る。 When the remaining amount becomes low, for example, when it reaches 1, that is, when the refueling amount reaches 9, the preset device 5
0 to the coil 28 of the first valve 24 is cut off, so that the coil 28 is deenergized and the valve body 35 is closed by the action of the spring 33. Then, the liquid does not flow from the diaphragm chamber 21, so the diaphragm chamber 2
1 is restored, the main valve 2a is closed by the action of the hydraulic pressure and the spring 22. Therefore, the liquid in the inlet channel 6 then flows through the narrow channel 7, the common chamber 36, and the channel 9 to the outlet channel 8. Since the passage for this flow is narrow, the amount of oil supplied per unit time is small in the last step as shown above, and it is possible to accurately meter and supply the oil.
残量が零すなわち10の給油が終わると、プリ
セツト装置５０から第２の弁２５のコイル２８′
への信号が断たれコイルは消勢し弁体３５′はス
プリング３３の作用で閉じ、給油が完了する。そ
してノズル５２をノズル掛けに掛けると、ノズル
スイツチ５３からの信号が消え、モーターが停止
する。 When the remaining amount is zero, that is, when 10 liters of oil has been refilled, the coil 28' of the second valve 25 is released from the preset device 50.
The signal to is cut off, the coil is deenergized, the valve body 35' is closed by the action of the spring 33, and the oil supply is completed. Then, when the nozzle 52 is put on the nozzle hook, the signal from the nozzle switch 53 disappears and the motor stops.
本発明に係る電磁弁は以上のように効果的に作
動するものであるが、停電などでコイル或いはモ
ータが作動しない時でも使用できる。すなわち手
動操作する時は手動バルブ４０のノブ４１を緩め
ると、第１の弁２４の弁体３５が開いた時と同じ
状態（コイル２８は通電された時と同じ）になつ
て第１の室３７が共通室３６に連通する。従つて
手動によりポンプを駆動することによつてダイア
フラム室２１の液体が出口側流路８へ流れ、ダイ
アフラム室の圧が下り主弁２ａが開き給油出来
る。なおこの場合液量は例えば機械的な積算計６
０で表示すればよい。 Although the solenoid valve according to the present invention operates effectively as described above, it can also be used when the coil or motor does not operate due to a power outage or the like. That is, when operating manually, when the knob 41 of the manual valve 40 is loosened, the valve element 35 of the first valve 24 becomes in the same state as when it is open (the coil 28 is the same as when it is energized), and the first chamber is opened. 37 communicates with the common room 36. Therefore, by manually driving the pump, the liquid in the diaphragm chamber 21 flows to the outlet side channel 8, the pressure in the diaphragm chamber decreases, and the main valve 2a opens to allow oil supply. In this case, the liquid volume is determined by, for example, a mechanical totalizer 6.
It should be displayed as 0.
以上の如く第１の弁２４は主弁２ａを開閉する
ものであり、第２の弁２５は細通路７を連通し遮
断するものである。したがつてその作用をまとめ
ると、第１の弁２４が開き主弁２ａが開いた状態
で大流量が流れ、第１の弁２４が閉じて主弁２ａ
が閉じ、第２の弁２５が開き細通路７が連通した
状態で小量流が流れる。そして第１、２の弁２
４，２５が閉じた状態では流れは遮断される。こ
の作動は第１および第２の弁のコイルを制御回路
５１から信号に従つて独立して行うことが出来
る。 As described above, the first valve 24 opens and closes the main valve 2a, and the second valve 25 opens and closes the narrow passage 7. Therefore, to summarize the action, a large flow flows when the first valve 24 is open and the main valve 2a is open, and when the first valve 24 is closed and the main valve 2a is open, a large flow flows.
is closed, the second valve 25 is opened, and a small amount of flow flows with the narrow passage 7 communicating. and the first and second valves 2
When 4 and 25 are closed, the flow is blocked. This operation can be performed independently for the coils of the first and second valves according to signals from the control circuit 51.
以上の説明において一定量の液を供給する場合
について説明したが、例えば自動車に給油する場
合にいわゆる満タンになることを前以つて検知し
て第１の弁を閉じ、次いで第２の弁を閉じるよう
にすれば誤つてガソリンを溢れさせてしまうこと
がない。 In the above explanation, we have explained the case where a fixed amount of liquid is supplied, but for example, when refueling a car, it is detected in advance that the tank is full, the first valve is closed, and then the second valve is closed. If you close it, you won't accidentally overflow the gasoline.
以上説明したように、本発明によると、主弁２
ａの開閉を制御する第１の弁と細通路７からの小
流量液の流れを制御する第２の弁とを一体的に備
えているのでバイパス配管等が不用でありコンパ
クトになり安価で操作性にも優れている。特に本
発明の実施に際してピストンに切欠きを設け、ピ
ストンの背面に液体がスムーズに流れるようにし
たので第１および第２の弁の作動力を小さくで
き、またコイルの周囲をエポキシ樹脂で被覆した
のでガソリン等可燃物に使用する場合にも特別に
防爆手段を施す必要がなく、弁の作動力が小さい
のでコイルの発熱量も少く好適である。 As explained above, according to the present invention, the main valve 2
Since the first valve that controls the opening and closing of a and the second valve that controls the flow of small flow liquid from the narrow passage 7 are integrated, there is no need for bypass piping, making it compact and inexpensive to operate. It is also excellent in sex. In particular, when implementing the present invention, a notch was provided in the piston to allow liquid to flow smoothly to the back of the piston, so the operating force of the first and second valves could be reduced, and the coil was coated around the coil with epoxy resin. Therefore, even when used with flammable materials such as gasoline, there is no need for special explosion-proof measures, and since the actuation force of the valve is small, the amount of heat generated by the coil is also small, making it suitable.
なお本発明に係る電磁弁は、図示の例に限定さ
れるものではなく、例えばピストン３０には切欠
３１の代わりに透孔を設けてもよく、また手動バ
ルブとして第２の弁３５′を開いた状態にする操
作杆などを設けることも出来る。 The solenoid valve according to the present invention is not limited to the illustrated example; for example, the piston 30 may be provided with a through hole instead of the notch 31, and the second valve 35' may be opened as a manual valve. It is also possible to provide an operating lever or the like that allows the device to be placed in a closed state.
第１図は本発明に係る電磁弁の一実施例を示す
断面図、第２図はピストン部分の断面図、第３図
は本発明に係る電磁弁を組み込んだ給油装置の模
式図である。
１……管路部分、２ａ……主弁、２４……第１
の弁、２５……第２の弁、２０……本体部分、２
８，２８′……コイル、３５，３５′……弁体、３
６……共通室、４０……手動弁。
FIG. 1 is a cross-sectional view showing one embodiment of the solenoid valve according to the present invention, FIG. 2 is a cross-sectional view of a piston portion, and FIG. 3 is a schematic diagram of an oil supply system incorporating the solenoid valve according to the present invention. 1... Pipe section, 2a... Main valve, 24... First
valve, 25... second valve, 20... main body part, 2
8, 28'... Coil, 35, 35'... Valve body, 3
6...Common room, 40...Manual valve.
Claims (1)
ることのできる電磁弁において、流圧により開閉
する主弁の背圧室と主弁の流入側とを連通する極
小流量の通路を設け、その背圧室と主弁の流出側
とを連通する第１の通路を設け、その第１の通路
に主弁の開閉を制御する第１の電磁弁を設け、そ
の第１の電磁弁の流出側通路に主弁の流入側に連
通する第２の通路と連通し、この第２の通路に第
２の電磁弁を設けたことを特徴とする電磁弁。1. In a solenoid valve that can be switched between a large flow rate and a small flow rate by electromagnetic operation, an extremely small flow passage is provided that communicates the back pressure chamber of the main valve, which opens and closes with fluid pressure, and the inflow side of the main valve. A first passage communicating between the back pressure chamber and the outflow side of the main valve is provided, a first solenoid valve for controlling opening and closing of the main valve is provided in the first passage, and an outflow side of the first solenoid valve is provided. A solenoid valve characterized in that the passage communicates with a second passage communicating with the inflow side of the main valve, and a second solenoid valve is provided in the second passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13063680A JPS5757976A (en) | 1980-09-22 | 1980-09-22 | Solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13063680A JPS5757976A (en) | 1980-09-22 | 1980-09-22 | Solenoid valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5757976A JPS5757976A (en) | 1982-04-07 |
| JPS6228353B2 true JPS6228353B2 (en) | 1987-06-19 |
Family
ID=15038983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13063680A Granted JPS5757976A (en) | 1980-09-22 | 1980-09-22 | Solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5757976A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0650226U (en) * | 1992-12-15 | 1994-07-08 | 三星電管株式會社 | Projection type cathode ray tube |
| JP2012158379A (en) * | 2011-02-02 | 2012-08-23 | Tatsuno Corp | Flow meter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4915297U (en) * | 1972-05-13 | 1974-02-08 |
-
1980
- 1980-09-22 JP JP13063680A patent/JPS5757976A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4915297U (en) * | 1972-05-13 | 1974-02-08 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0650226U (en) * | 1992-12-15 | 1994-07-08 | 三星電管株式會社 | Projection type cathode ray tube |
| JP2012158379A (en) * | 2011-02-02 | 2012-08-23 | Tatsuno Corp | Flow meter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5757976A (en) | 1982-04-07 |
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