JP5998874B2 - Electromagnetic valve device for high-pressure fluid and method for manufacturing electromagnetic valve device for high-pressure fluid - Google Patents

Electromagnetic valve device for high-pressure fluid and method for manufacturing electromagnetic valve device for high-pressure fluid Download PDF

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JP5998874B2
JP5998874B2 JP2012258242A JP2012258242A JP5998874B2 JP 5998874 B2 JP5998874 B2 JP 5998874B2 JP 2012258242 A JP2012258242 A JP 2012258242A JP 2012258242 A JP2012258242 A JP 2012258242A JP 5998874 B2 JP5998874 B2 JP 5998874B2
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diameter portion
movable core
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JP2014105756A (en
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石橋　亮
石橋　　亮
高木　章
章 高木
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Denso Corp
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本発明は、高圧流体の流れを電磁弁によって遮断または許容する高圧流体用電磁弁装置に関する。   The present invention relates to an electromagnetic valve device for high-pressure fluid that blocks or allows a flow of high-pressure fluid by an electromagnetic valve.

内燃機関（以下、「エンジン」という）に供給する気体燃料の圧力を燃料タンク内の高圧から気体燃料用インジェクタが噴射可能な低圧に減圧する気体燃料供給システムが知られている。気体燃料供給システムが備える気体燃料用電磁弁装置は、通電により磁力を発生するコイル、固定コア、可動コア、および可動コアを往復移動可能に収容するガイド筒などからなる弁駆動部と、可動コアと一体に移動する弁体、および弁座などからなる弁部材部とから構成され、高圧の気体燃料の流れを断続し、高圧の気体燃料が気体燃料用インジェクタに流れることを防止する。   There is known a gaseous fuel supply system that reduces the pressure of gaseous fuel supplied to an internal combustion engine (hereinafter referred to as “engine”) from a high pressure in a fuel tank to a low pressure that can be injected by a gaseous fuel injector. An electromagnetic valve device for gaseous fuel provided in a gaseous fuel supply system includes a coil that generates a magnetic force when energized, a fixed core, a movable core, a valve drive unit that accommodates the movable core in a reciprocating manner, and a movable core. And a valve member portion composed of a valve seat and the like, and the flow of the high-pressure gaseous fuel is interrupted to prevent the high-pressure gaseous fuel from flowing into the gaseous fuel injector.

気体燃料用電磁弁装置は、燃料タンクから供給される気体燃料の圧力を利用して弁体と弁座との間の気密性を高めるセルフシール機能を有している。このため、気体燃料用電磁弁装置のガイド筒内には弁体を閉弁方向に付勢するように高圧の気体燃料が充満する。また、気体燃料の外部への漏出を防止するため、ガイド筒は高い耐圧性を有する。
一方、弁体を弁座から離間させるときガイド筒内の気体燃料の圧力に抗する磁気吸引力を可動コアと固定コアとの間に発生させるため、可動コアの直径は比較的大きくなる。 The electromagnetic valve device for gaseous fuel has a self-seal function that increases the airtightness between the valve body and the valve seat by using the pressure of the gaseous fuel supplied from the fuel tank. For this reason, the guide cylinder of the gaseous fuel solenoid valve device is filled with high-pressure gaseous fuel so as to urge the valve body in the valve closing direction. Moreover, in order to prevent leakage of gaseous fuel to the outside, the guide tube has high pressure resistance.
On the other hand, when the valve body is separated from the valve seat, a magnetic attraction force against the pressure of the gaseous fuel in the guide cylinder is generated between the movable core and the fixed core, so that the diameter of the movable core becomes relatively large.

このように、気体燃料用電磁弁装置では、ガイド筒は直径が大きい可動コアを往復移動可能に収容しつつ高い耐圧性を有しなければならないため、内部に高圧流体を充満させないガイド筒に比べて肉厚が厚くなる。一般的に非磁性材で形成されるガイド筒の肉厚が厚くなると、コイルに通電される電流値の大きさに対して発生する磁気吸引力の大きさが低下する。可動コアと固定コアとの間の磁気吸引力を高めるため、コイルに通電する電流値を大きくするか、またはコイルの巻数を多くする。しかしながら、コイルに通電する電流値を大きくするとエネルギー消費量が増加し、また、コイルの巻数を多くすると電磁弁装置の体格が大きくなる。   As described above, in the solenoid valve device for gaseous fuel, the guide cylinder must have a high pressure resistance while accommodating a movable core having a large diameter so as to be able to reciprocate, so that the guide cylinder is not filled with a high-pressure fluid inside. The wall thickness becomes thick. In general, when the thickness of a guide cylinder formed of a nonmagnetic material is increased, the magnitude of the magnetic attractive force generated with respect to the magnitude of the current value supplied to the coil is reduced. In order to increase the magnetic attractive force between the movable core and the fixed core, the value of the current supplied to the coil is increased or the number of turns of the coil is increased. However, when the current value energized to the coil is increased, the energy consumption increases, and when the number of turns of the coil is increased, the physique of the electromagnetic valve device is increased.

特許文献１には、非磁性材料で形成されるガイド筒の径方向外側の一部に磁性材料で形成される磁界形成補助部材を備える高圧電磁弁が記載されている。特許文献２には、磁性材料で形成されプランジャを往復移動可能に収容するステータコアにプランジャとの間での磁気の受け渡しをおこなうための磁気遮断部を有するリニアソレノイドが記載されている。   Patent Document 1 describes a high-pressure solenoid valve that includes a magnetic field forming auxiliary member formed of a magnetic material on a part of a radially outer side of a guide tube formed of a nonmagnetic material. Patent Document 2 describes a linear solenoid having a magnetic blocking portion for transferring magnetism to and from a plunger in a stator core that is formed of a magnetic material and accommodates the plunger so as to be reciprocally movable.

特許４８７１２０７号明細書Japanese Patent No. 4871207 特開２０１１−１０８７８１号公報JP 2011-108781 A

しかしながら、特許文献１に記載の高圧電磁弁では、ガイド筒は非磁性材料から形成されておりコイルに通電される電流値の大きさに対して発生する磁気吸引力を大幅に大きくすることはできないため、高圧電磁弁の体格を大幅に小さくすることはできない。また、別部材として磁界形成補助部材を備えるため、部品点数が増え、組付コストが増加する。
また、特許文献２に記載のリニアソレノイドは、作動圧力範囲が比較的低圧の作動流体の流れを切り換える場合に用いられ、作動流体であるオイルの外部への漏れが許容されており、セルフシール機能を有していない。このため、特許文献２に記載のリニアソレノイドの構成を高圧流体用電磁弁装置に適用させることはできない。 However, in the high-pressure solenoid valve described in Patent Document 1, the guide cylinder is made of a non-magnetic material, and the magnetic attractive force generated with respect to the magnitude of the current value supplied to the coil cannot be significantly increased. For this reason, the physique of the high pressure solenoid valve cannot be significantly reduced. Moreover, since the magnetic field formation auxiliary member is provided as a separate member, the number of parts increases and the assembling cost increases.
The linear solenoid described in Patent Document 2 is used when switching the flow of a working fluid whose working pressure range is relatively low, and allows leakage of oil as the working fluid to the outside. Does not have. For this reason, the configuration of the linear solenoid described in Patent Document 2 cannot be applied to the electromagnetic valve device for high pressure fluid.

本発明の目的は、高圧流体の流れを遮断または許容しつつ、体格の小型化が可能な高圧流体用電磁弁装置を提供することにある。   An object of the present invention is to provide an electromagnetic valve device for a high pressure fluid that can be reduced in size while blocking or allowing the flow of the high pressure fluid.

本発明は、通電により磁力を発生するコイルアッセンブリと、磁性材料で形成されコイルアッセンブリが磁力を発生するとき励磁される固定コアと、磁性材料で形成されコイルアッセンブリが磁力を発生するとき固定コアに吸引される可動コアと、可動コアを往復移動可能に収容し軸方向の所定位置の全周にわたって磁気を遮断する磁気遮断部および磁気を透過する磁気透過部を形成し内部を高圧流体で充満可能なガイド筒と、可動コアに連結する弁体と、弁体に当接または離間するときに高圧流体の流れを遮断または許容する弁座を形成するシート部材と、を備える高圧流体用電磁弁装置であって、ガイド筒は、固定コア側に小内径部、および固定コアと反対側に小内径部の内径より大きい内径の大内径部を有し、可動コアは、固定コア側にガイド筒の小内径部の内周面に摺動する外周面をもつ小外径部、および固定コアと反対側に小外径部の外径より大きく大内径部の内径より小さい外径の大外径部を有し、可動コアの小外径部と大外径部との間に形成される第１段差面は、ガイド筒の小内径部と大内径部との間に形成される第２段差面に対向し、コイルアッセンブリが磁力を発生するとき、第１段差面と第２段差面との間に磁気回路が形成され、かつガイド筒の磁気透過部と可動コアの端面との間に磁気遮断部を迂回して磁気回路が形成されることを特徴とする。   The present invention provides a coil assembly that generates a magnetic force when energized, a fixed core that is formed of a magnetic material and is excited when the coil assembly generates a magnetic force, and a fixed core that is formed of a magnetic material and generates a magnetic force. The movable core to be attracted and the movable core can be reciprocally moved to form a magnetic shielding part that shields magnetism over the entire circumference of a predetermined position in the axial direction and a magnetic transmission part that transmits magnetism, and the interior can be filled with high-pressure fluid A high pressure fluid electromagnetic valve device comprising: a guide tube; a valve body coupled to the movable core; and a seat member that forms a valve seat that blocks or allows the flow of the high pressure fluid when contacting or separating from the valve body. The guide tube has a small inner diameter portion on the fixed core side, and a large inner diameter portion on the opposite side to the fixed core. The movable core has a larger inner diameter portion than the inner diameter of the small inner diameter portion. A small outer diameter portion having an outer peripheral surface that slides on the inner peripheral surface of the small inner diameter portion of the guide tube, and a larger outer diameter that is larger than the outer diameter of the small outer diameter portion and smaller than the inner diameter of the large inner diameter portion on the opposite side of the fixed core. A first step surface having an outer diameter portion and formed between the small outer diameter portion and the large outer diameter portion of the movable core is formed between the small inner diameter portion and the large inner diameter portion of the guide tube. When the coil assembly faces the two step surfaces and generates a magnetic force, a magnetic circuit is formed between the first step surface and the second step surface, and between the magnetic transmission part of the guide tube and the end surface of the movable core. The magnetic circuit is formed by bypassing the magnetic shielding part.

高圧流体用電磁弁装置では、コイルアッセンブリに通電されると形成される磁気回路により可動コアが固定コアに吸引される。このとき、磁気回路は、固定コアの端面と可動コアの端面との間に形成されつつ、ガイド筒の磁気透過部と可動コアの端面との間にも形成される。比較的磁束が流れやすい磁気透過部と可動コアとの間に形成される磁気回路は、比較的磁束が流れにくく磁気飽和しやすい磁気遮断部を迂回するようにガイド筒の中心軸に対して斜めに形成され、可動コアが固定コアに吸引される電磁吸引力を発生する。さらに、可動コアの第１段差面とガイド筒の第２段差面との間にも、ガイド筒の中心軸に対して平行な磁気回路が形成される。   In the electromagnetic valve device for high pressure fluid, the movable core is attracted to the fixed core by the magnetic circuit formed when the coil assembly is energized. At this time, the magnetic circuit is formed between the end face of the fixed core and the end face of the movable core, and is also formed between the magnetic transmission part of the guide tube and the end face of the movable core. The magnetic circuit formed between the magnetically transmissive part and the movable core, which is relatively easy for magnetic flux to flow, is slanted with respect to the central axis of the guide cylinder so as to bypass the magnetic shielding part, which is relatively difficult for magnetic flux to flow and magnetically saturated. The movable core generates an electromagnetic attractive force that is attracted to the fixed core. Further, a magnetic circuit parallel to the central axis of the guide cylinder is also formed between the first step surface of the movable core and the second step surface of the guide cylinder.

こうして、可動コアは、固定コアの可動コア側の端面と可動コアの固定コア側の端面との間に形成される磁気回路により発生する磁気吸引力だけでなく、ガイド筒の磁気透過部と可動コアの固定コア側の端面との間に形成される磁気回路により発生する磁気吸引力に加えて、可動コアの第１段差面とガイド筒の第２段差面との間に形成される磁気回路で発生する磁気吸引力によっても、固定コア側に移動する。
これにより、固定コアと可動コアとの間に形成される磁気回路で発生する磁気吸引力のみにより移動する可動コアの固定コアに対する対向面積に比べて、固定コアに対する可動コアの対向面積を小さくすることが可能になり、可動コアの直径を小さくすることができる。したがって、気体燃料用電磁弁装置の体格を小さくすることができる。 Thus, the movable core is movable not only with the magnetic attractive force generated by the magnetic circuit formed between the end surface of the fixed core on the movable core side and the end surface of the movable core on the fixed core side, but also with the magnetic transmission portion of the guide cylinder. Magnetic circuit formed between the first step surface of the movable core and the second step surface of the guide tube in addition to the magnetic attraction generated by the magnetic circuit formed between the end surface of the core on the fixed core side It moves to the fixed core side also by the magnetic attraction force generated in the above.
As a result, the facing area of the movable core with respect to the fixed core is made smaller than the facing area of the movable core that moves only by the magnetic attractive force generated by the magnetic circuit formed between the fixed core and the movable core. And the diameter of the movable core can be reduced. Accordingly, the physique of the gaseous fuel solenoid valve device can be reduced.

また、上述したように高圧流体用電磁弁装置の可動コアの直径が小さくなるため、可動コアを往復移動可能に収容するガイド筒の直径も小さくなる。ガイド筒の直径が小さくなると、ガイド筒内に充満する気体燃料の圧力に抗するガイド筒の耐圧性が高くなる。
これにより、同じ圧力の高圧流体が充満する場合、固定コアと可動コアとの間の磁気回路で発生する磁気吸引力のみにより移動する可動コアを有する高圧流体用電磁弁装置に比べて、ガイド筒の肉厚を薄くすることができる。したがって、気体燃料用電磁弁装置の体格をさらに小さくすることができる。 Moreover, since the diameter of the movable core of the electromagnetic valve device for high-pressure fluid is reduced as described above, the diameter of the guide cylinder that accommodates the movable core so as to be capable of reciprocating is also reduced. When the diameter of the guide cylinder is reduced, the pressure resistance of the guide cylinder against the pressure of the gaseous fuel filling the guide cylinder is increased.
As a result, when a high-pressure fluid of the same pressure is filled, the guide cylinder is compared with a solenoid valve device for high-pressure fluid having a movable core that moves only by a magnetic attractive force generated by a magnetic circuit between the fixed core and the movable core. Can be made thinner. Therefore, the physique of the gaseous fuel solenoid valve device can be further reduced.

本発明の第１実施形態による気体燃料用電磁弁装置を適用した気体燃料供給システムの概略構成を示す模式図である。It is a mimetic diagram showing a schematic structure of a gaseous fuel supply system to which a solenoid valve device for gaseous fuel by a 1st embodiment of the present invention is applied. 本発明の第１実施形態による気体燃料用電磁弁装置の断面図である。It is sectional drawing of the solenoid valve apparatus for gaseous fuel by 1st Embodiment of this invention. 本発明の第１実施形態による気体燃料用電磁弁装置の図２とは異なる作動を示す断面図である。It is sectional drawing which shows the operation | movement different from FIG. 2 of the solenoid valve apparatus for gaseous fuel by 1st Embodiment of this invention. 本発明の第１実施形態による気体燃料用電磁弁装置の図２、図３とは異なる作動を示す断面図である。It is sectional drawing which shows the operation | movement different from FIG. 2, FIG. 3 of the solenoid valve apparatus for gaseous fuel by 1st Embodiment of this invention. 本発明の第２実施形態による気体燃料用電磁弁装置の断面図である。It is sectional drawing of the solenoid valve apparatus for gaseous fuel by 2nd Embodiment of this invention. 本発明の第３実施形態による気体燃料用電磁弁装置の断面図である。It is sectional drawing of the solenoid valve apparatus for gaseous fuel by 3rd Embodiment of this invention.

以下、本発明の複数の実施形態について図面に基づいて説明する。   Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings.

（第１実施形態）
本発明の第１実施形態による気体燃料用電磁弁装置１を、図１〜図４に基づいて説明する。
最初に、気体燃料用電磁弁装置１を適用する気体燃料供給システムの概略構成を図１に基づいて説明する。気体燃料供給システム５は、例えば、圧縮天然ガスを燃料とする車両に搭載される。気体燃料供給システム５は、ガス充填口１０、燃料タンク１２、気体燃料用電磁弁装置１、気体燃料用圧力制御弁１５、「噴射手段」としての気体燃料用インジェクタ１７、およびＥＣＵ９等を備える。 (First embodiment)
The electromagnetic valve device 1 for gaseous fuel by 1st Embodiment of this invention is demonstrated based on FIGS. 1-4.
First, a schematic configuration of a gaseous fuel supply system to which the gaseous fuel electromagnetic valve device 1 is applied will be described with reference to FIG. The gaseous fuel supply system 5 is mounted on a vehicle that uses compressed natural gas as fuel, for example. The gaseous fuel supply system 5 includes a gas filling port 10, a fuel tank 12, a gaseous fuel electromagnetic valve device 1, a gaseous fuel pressure control valve 15, a gaseous fuel injector 17 as “injecting means”, an ECU 9, and the like.

外部からガス充填口１０を通して供給される高圧の気体燃料は、供給管６を通って燃料タンク１２に貯留される。ガス充填口１０は、逆流防止機能を有しており、ガス充填口１０から供給される気体燃料が外部に逆流しないようになっている。供給管６には、ガス充填弁１１が設けられる。   High-pressure gaseous fuel supplied from the outside through the gas filling port 10 is stored in the fuel tank 12 through the supply pipe 6. The gas filling port 10 has a backflow prevention function so that the gaseous fuel supplied from the gas filling port 10 does not flow back to the outside. The supply pipe 6 is provided with a gas filling valve 11.

燃料タンク１２には、燃料タンク弁１３が設けられている。燃料タンク弁１３は、燃料タンク１２からガス充填口１０への逆流防止機能、規定量以上の気体燃料が供給管７を流れるとき燃料タンク１２からの気体燃料の流れを遮断する過流防止機能、および燃料タンク１２内の圧力上昇時に燃料タンク１２内の圧力を外部に開放することで燃料タンク１２の破裂を防ぐ加圧防止安全機能を有する。
燃料タンク弁１３は、供給管７を介して気体燃料用電磁弁装置１に接続される。供給管７には、手動による供給管７の遮断が可能な元弁１４が設けられている。 The fuel tank 12 is provided with a fuel tank valve 13. The fuel tank valve 13 has a backflow prevention function from the fuel tank 12 to the gas filling port 10, an overflow prevention function that blocks the flow of the gaseous fuel from the fuel tank 12 when a specified amount or more of gaseous fuel flows through the supply pipe 7, Also, it has a pressurization preventive safety function that prevents the fuel tank 12 from bursting by releasing the pressure in the fuel tank 12 to the outside when the pressure in the fuel tank 12 rises.
The fuel tank valve 13 is connected to the gaseous fuel electromagnetic valve device 1 via the supply pipe 7. The supply pipe 7 is provided with a main valve 14 that can manually shut off the supply pipe 7.

気体燃料用電磁弁装置１は、気体燃料用圧力制御弁１５の上流側、すなわち燃料タンク１２側に設けられる。気体燃料用電磁弁装置１は、気体燃料用圧力制御弁１５の下流側を流れる気体燃料の圧力が所定の圧力以上になると、ＥＣＵ９からの指令により気体燃料用圧力制御弁１５に流入する気体燃料の流れを遮断する。   The gaseous fuel electromagnetic valve device 1 is provided on the upstream side of the gaseous fuel pressure control valve 15, that is, on the fuel tank 12 side. When the pressure of the gaseous fuel flowing on the downstream side of the gaseous fuel pressure control valve 15 becomes equal to or higher than a predetermined pressure, the gaseous fuel electromagnetic valve device 1 flows into the gaseous fuel pressure control valve 15 according to a command from the ECU 9. To block the flow.

気体燃料用圧力制御弁１５は、供給管７を通って供給される気体燃料の圧力を気体燃料用インジェクタ１７が供給可能な圧力まで減圧する。例えば、気体燃料用圧力制御弁１５は、燃料タンク１２内の「高圧」である２０ＭＰａの気体燃料を気体燃料用インジェクタ１７に供給可能な圧力である「低圧」の０．２〜０．６５ＭＰａまで減圧する。   The gaseous fuel pressure control valve 15 reduces the pressure of the gaseous fuel supplied through the supply pipe 7 to a pressure that can be supplied by the gaseous fuel injector 17. For example, the pressure control valve 15 for the gaseous fuel is from 0.2 to 0.65 MPa of “low pressure” which is a pressure capable of supplying the gaseous fuel of 20 MPa which is “high pressure” in the fuel tank 12 to the injector 17 for gaseous fuel. Reduce pressure.

気体燃料用圧力制御弁１５で減圧された気体燃料は、オイルフィルタ１６によってオイルが除去され、供給管８を通って気体燃料用インジェクタ１７に供給される。気体燃料用インジェクタ１７は、電気的に接続するＥＣＵ９の指示に応じて吸気管１８内に気体燃料を噴射する。気体燃料用インジェクタ１７には、図示しない温度センサおよび圧力センサが設けられる。温度センサおよび圧力センサが検出する気体燃料の温度および圧力に関する情報は、ＥＣＵ９に出力される。   The gaseous fuel decompressed by the gaseous fuel pressure control valve 15 is supplied with oil by the oil filter 16 and supplied to the gaseous fuel injector 17 through the supply pipe 8. The gaseous fuel injector 17 injects gaseous fuel into the intake pipe 18 in accordance with an instruction from the electrically connected ECU 9. The gaseous fuel injector 17 is provided with a temperature sensor and a pressure sensor (not shown). Information on the temperature and pressure of the gaseous fuel detected by the temperature sensor and the pressure sensor is output to the ECU 9.

吸気管１８内に噴射される気体燃料は、大気から導入される空気と混合され、吸気管１８が接続する「内燃機関」としてのエンジン１９の吸気ポートからシリンダ１９１内に導入される。エンジン１９では、ピストン１９２の上昇による気体燃料および空気の混合気体の圧縮および爆発により回転トルクが発生する。
気体燃料供給システム５は、このようにして燃料タンク１２内の気体燃料を気体燃料用圧力制御弁１５により気体燃料用インジェクタ１７に供給可能な圧力に減圧して気体燃料用インジェクタ１７よりエンジン１９に供給する。 The gaseous fuel injected into the intake pipe 18 is mixed with air introduced from the atmosphere, and is introduced into the cylinder 191 from an intake port of the engine 19 as an “internal combustion engine” to which the intake pipe 18 is connected. In the engine 19, rotational torque is generated by compression and explosion of a mixed gas of gaseous fuel and air due to the rise of the piston 192.
In this way, the gaseous fuel supply system 5 depressurizes the gaseous fuel in the fuel tank 12 to a pressure that can be supplied to the gaseous fuel injector 17 by the gaseous fuel pressure control valve 15, and sends the gaseous fuel to the engine 19 from the gaseous fuel injector 17. Supply.

次に、第１実施形態による気体燃料用電磁弁装置１の詳細構造について、図２〜図４に基づいて説明する。なお、図中の実線矢印Ｌは、気体燃料が流れる方向を示す。   Next, the detailed structure of the electromagnetic valve device 1 for gaseous fuel by 1st Embodiment is demonstrated based on FIGS. In addition, the solid line arrow L in a figure shows the direction through which gaseous fuel flows.

第１実施形態による気体燃料用電磁弁装置１は、支持部材１５１、弁座１５５、ガイド筒２０、弁体２５、可動コア３０、摺動部３３、固定コア３５、コイルアッセンブリ４０、および蓋部４５などから構成されている。   The electromagnetic valve device 1 for gaseous fuel according to the first embodiment includes a support member 151, a valve seat 155, a guide cylinder 20, a valve body 25, a movable core 30, a sliding portion 33, a fixed core 35, a coil assembly 40, and a lid portion. 45 or the like.

支持部材１５１は、導入通路１５２、導出通路１５３、および導入通路１５２と導出通路１５３とを連通する凹部１５４を形成する。導入通路１５２は、供給管７を介して燃料タンク１２内の気体燃料が供給される。導出通路１５３は、気体燃料用圧力制御弁１５に向けて気体燃料を排出する。凹部１５４は、支持部材１５１の外壁に開口を有するように形成される。また、支持部材１５１の外壁と略垂直な凹部１５４の内壁にはねじ溝１５６が形成される。このねじ溝１５６は、後に説明するガイド筒２０をねじ止めするためのものである。   The support member 151 forms an introduction passage 152, a lead-out passage 153, and a recess 154 that connects the introduction passage 152 and the lead-out passage 153. The introduction passage 152 is supplied with gaseous fuel in the fuel tank 12 through the supply pipe 7. The outlet passage 153 discharges the gaseous fuel toward the gaseous fuel pressure control valve 15. The recess 154 is formed to have an opening in the outer wall of the support member 151. Further, a thread groove 156 is formed in the inner wall of the recess 154 that is substantially perpendicular to the outer wall of the support member 151. The thread groove 156 is for screwing a guide cylinder 20 described later.

弁座１５５は、支持部材１５１の凹部１５４の内壁であって導出通路１５３の開口の縁部にテーパ状に形成されている。すなわち、弁座１５５を形成する支持部材１５１は、特許請求の範囲に記載の「シート部材」に相当する。   The valve seat 155 is tapered on the inner wall of the recess 154 of the support member 151 and at the edge of the opening of the outlet passage 153. That is, the support member 151 forming the valve seat 155 corresponds to a “seat member” described in the claims.

なお、第１実施形態による気体燃料用電磁弁装置１では、支持部材１５１は気体燃料用電磁弁装置１の下流側に接続される気体燃料用圧力制御弁１５の弁ボディであるが、これに限定されず、気体燃料用圧力制御弁１５の弁ボディとは別異に設けてもよい。   In the gaseous fuel electromagnetic valve device 1 according to the first embodiment, the support member 151 is a valve body of the gaseous fuel pressure control valve 15 connected to the downstream side of the gaseous fuel electromagnetic valve device 1. It is not limited, You may provide separately from the valve body of the pressure control valve 15 for gaseous fuels.

ガイド筒２０は、支持部材１５１によって支持されている。ガイド筒２０は、可動コア３０を軸方向に往復移動可能に収容しつつ、導入通路１５２から凹部１５４を介して導出通路１５３に流れる高圧の気体燃料を内部に充満可能でありかつ外部に漏出しないように形成されている。   The guide cylinder 20 is supported by a support member 151. The guide tube 20 accommodates the movable core 30 so as to be capable of reciprocating in the axial direction, and can be filled with high-pressure gaseous fuel flowing from the introduction passage 152 to the lead-out passage 153 via the recess 154 and does not leak to the outside. It is formed as follows.

また、ガイド筒２０は、支持部材１５１側から大径部２０１、中径部２０４、鍔部２０５、第１小径部２０６、磁気遮断部２１、および第２小径部２０７などから構成されている。第１実施形態による気体燃料用電磁弁装置１では、ガイド筒２０のこれら大径部２０１、中径部２０４、鍔部２０５、第１小径部２０６、磁気遮断部２１、および第２小径部２０７は一体に形成される。ガイド筒２０は、磁性材料、例えばクロムの含有率が１３〜１７ｗｔ％の磁性ステンレス鋼で形成される。   In addition, the guide tube 20 includes a large diameter portion 201, a medium diameter portion 204, a flange portion 205, a first small diameter portion 206, a magnetic shielding portion 21, a second small diameter portion 207, and the like from the support member 151 side. In the electromagnetic valve device 1 for gaseous fuel according to the first embodiment, these large diameter part 201, medium diameter part 204, collar part 205, first small diameter part 206, magnetic shielding part 21, and second small diameter part 207 of the guide cylinder 20. Are integrally formed. The guide cylinder 20 is formed of a magnetic material, for example, magnetic stainless steel having a chromium content of 13 to 17 wt%.

大径部２０１は、所定の第１外径および第１内径を有する略筒状に形成されている。大径部２０１の一端には、開口２０２およびねじ溝２０３を有する。開口２０２では、可動コア３０または弁体２５がガイド筒２０の内部と外部とを出入りする。ねじ溝２０３は、支持部材１５１のねじ溝１５６とねじ結合する。   The large diameter portion 201 is formed in a substantially cylindrical shape having a predetermined first outer diameter and first inner diameter. One end of the large diameter portion 201 has an opening 202 and a screw groove 203. In the opening 202, the movable core 30 or the valve body 25 enters and exits the inside and outside of the guide cylinder 20. The screw groove 203 is screw-coupled with the screw groove 156 of the support member 151.

中径部２０４は、大径部２０１の第１外径より小さい第２外径を有する略筒状に形成されている。中径部２０４の一端は大径部２０１の他端に接続する。中径部２０４のうち、大径部２０１に接する部分、すなわち第１中径部２０４ａは、大径部２０１の第１内径より小さい第２内径を有する。また、中径部２０４のうち、第１中径部２０４ａに接する部分、すなわち第２中径部２０４ｂは、第２内径より小さい第３内径を有している。
そして、大径部２０１の第１内径の内周面と第１中径部２０４ａの第２内径の内周面との境界には、段差面２０ａが形成される。第１中径部２０４ａの第２内径の内周面と第２中径部２０４ｂの第３内径の内周面との境界には、段差面２０ｂが形成される。 The middle diameter portion 204 is formed in a substantially cylindrical shape having a second outer diameter smaller than the first outer diameter of the large diameter portion 201. One end of the medium diameter portion 204 is connected to the other end of the large diameter portion 201. Of the medium diameter portion 204, the portion in contact with the large diameter portion 201, that is, the first medium diameter portion 204 a has a second inner diameter smaller than the first inner diameter of the large diameter portion 201. In addition, a portion of the medium diameter portion 204 that is in contact with the first medium diameter portion 204a, that is, the second medium diameter portion 204b has a third inner diameter smaller than the second inner diameter.
A step surface 20a is formed at the boundary between the inner peripheral surface of the first inner diameter of the large diameter portion 201 and the inner peripheral surface of the second inner diameter of the first medium diameter portion 204a. A step surface 20b is formed at the boundary between the inner peripheral surface of the first inner diameter portion 204a having the second inner diameter and the inner diameter surface of the second inner diameter portion 204b having the third inner diameter.

鍔部２０５は、中径部２０４の径方向外側に設けられており、大径部２０１の第１外径より大きい外径を有する。鍔部２０５には、ガイド筒２０を支持部材１５１に組み付けるとき、またはガイド筒２０を支持部材１５１から取り外すとき、工具等による回転トルクが作用する。鍔部２０５と支持部材１５１との間には、凹部１５４からの気体燃料の漏出を防止するシール部材１５７が設けられる。   The flange portion 205 is provided on the radially outer side of the medium diameter portion 204 and has an outer diameter larger than the first outer diameter of the large diameter portion 201. When the guide tube 20 is assembled to the support member 151 or when the guide tube 20 is removed from the support member 151, rotational torque generated by a tool or the like acts on the collar portion 205. A seal member 157 for preventing leakage of gaseous fuel from the recess 154 is provided between the flange portion 205 and the support member 151.

第１小径部２０６は、中径部２０４の第２外径より小さい第３外径を有し、中径部２０４の第３内径と等しい第３内径を有する略筒状に形成されている。第１小径部２０６の一端は中径部２０４の他端に接続する。第１小径部２０６は、特許請求の範囲に記載の「磁気透過部」に相当する。   The first small diameter portion 206 has a third outer diameter smaller than the second outer diameter of the medium diameter portion 204 and is formed in a substantially cylindrical shape having a third inner diameter equal to the third inner diameter of the medium diameter portion 204. One end of the first small diameter portion 206 is connected to the other end of the medium diameter portion 204. The first small diameter portion 206 corresponds to a “magnetic transmission portion” recited in the claims.

磁気遮断部２１は、第１小径部２０６の第３外径より小さい第４外径を有し、第１小径部２０６の第３内径と等しい第３内径を有する略筒状に形成されている。磁気遮断部２１の一端は、第１小径部２０６の他端に接続する。   The magnetic shielding part 21 has a fourth outer diameter smaller than the third outer diameter of the first small diameter part 206 and is formed in a substantially cylindrical shape having a third inner diameter equal to the third inner diameter of the first small diameter part 206. . One end of the magnetic shielding part 21 is connected to the other end of the first small diameter part 206.

第２小径部２０７は、第１小径部２０６の第３外径と等しい第３外径を有し、磁気遮断部２１の第３内径と等しい第３内径を有する略筒状に形成されている。第２小径部２０７の一端は、磁気遮断部２１の他端に接続する。   The second small diameter portion 207 has a third outer diameter equal to the third outer diameter of the first small diameter portion 206, and is formed in a substantially cylindrical shape having a third inner diameter equal to the third inner diameter of the magnetic shielding portion 21. . One end of the second small diameter part 207 is connected to the other end of the magnetic shielding part 21.

第１小径部２０６と第２小径部２０７とに挟まれた磁気遮断部２１は、第１小径部および第２小径部と同じ第３内径を有する一方で、第１小径部および第２小径部の第３外径より小さい第４外径を有する。すなわち、磁気遮断部２１は第１小径部および第２小径部に比べて肉厚が薄く形成される。第１実施形態による気体燃料用電磁弁装置１では、磁気遮断部２１の肉厚は例えば０．６〜０．９ｍｍとされる。このため、磁気遮断部２１は、後に説明するコイル４１の通電により形成される磁束が流れにくく、磁気飽和しやすくなっている。   While the magnetic shielding part 21 sandwiched between the first small diameter part 206 and the second small diameter part 207 has the same third inner diameter as the first small diameter part and the second small diameter part, the first small diameter part and the second small diameter part The fourth outer diameter is smaller than the third outer diameter. That is, the magnetic shielding part 21 is formed thinner than the first small diameter part and the second small diameter part. In the electromagnetic valve device 1 for gaseous fuel according to the first embodiment, the thickness of the magnetic shielding part 21 is set to 0.6 to 0.9 mm, for example. For this reason, the magnetic interrupting part 21 is less likely to flow a magnetic flux formed by energization of the coil 41 described later, and is easily magnetically saturated.

第２小径部２０７の他端には、開口２０８およびねじ溝２０９が設けられている。開口２０８は、後に説明する固定コア３５を固定するためのものである。また、ねじ溝２０９は、第２小径部２０７の径方向外側に形成される。ねじ溝２０９は、後に説明する蓋部４５をねじ止めするためのものである。第２小径部２０７は、特許請求の範囲に記載の「磁気透過部」に相当する。   An opening 208 and a thread groove 209 are provided at the other end of the second small diameter portion 207. The opening 208 is for fixing the fixed core 35 described later. Further, the thread groove 209 is formed on the radially outer side of the second small diameter portion 207. The screw groove 209 is for screwing a lid 45 described later. The second small diameter portion 207 corresponds to a “magnetic transmission portion” recited in the claims.

ガイド筒２０を内径の大きさから分類すると、大径部２０１が第１内径を有し、第１中径部２０４ａが第２内径を有し、第２中径部２０４ｂ、第１小径部２０６、磁気遮断部２１、第２小径部２０７が第３内径を有する。
第３内径を有する第２中径部２０４ｂ、第１小径部２０６、磁気遮断部２１、第２小径部２０７が、特許請求の範囲に記載の「小内径部」に相当し、第２内径を有する第１中径部２０４ａが、特許請求の範囲に記載の「中内径部」に相当し、第１内径を有する大径部２０１が、特許請求の範囲に記載の「大内径部」に相当する。 When the guide tube 20 is classified based on the size of the inner diameter, the large diameter portion 201 has a first inner diameter, the first medium diameter portion 204a has a second inner diameter, the second medium diameter portion 204b, and the first small diameter portion 206. The magnetic shielding part 21 and the second small diameter part 207 have a third inner diameter.
The second medium-diameter portion 204b having the third inner diameter, the first small-diameter portion 206, the magnetic shielding portion 21, and the second small-diameter portion 207 correspond to the “small-diameter portion” recited in the claims, and the second inner diameter is The first medium diameter portion 204a having the first inner diameter portion corresponds to the “medium inner diameter portion” recited in the claims, and the large diameter portion 201 having the first inner diameter corresponds to the “large inner diameter portion” recited in the claims. To do.

弁体２５は、当接部２６、小径部２７、および大径部２８などから構成されている。当接部２６、小径部２７、および大径部２８は非磁性材で一体に形成される。弁体２５は、可動コア３０の往復移動に合わせて弁座１５５に当接または離間する。   The valve body 25 includes a contact portion 26, a small diameter portion 27, a large diameter portion 28, and the like. The contact part 26, the small diameter part 27, and the large diameter part 28 are integrally formed of a nonmagnetic material. The valve body 25 contacts or separates from the valve seat 155 in accordance with the reciprocating movement of the movable core 30.

当接部２６は、円錐台状に形成され、当接部２６の斜面２６１は弁座１５５に当接または離間可能に形成されている。斜面２６１には、断面が凹状の収容室２６２が環状に形成される。収容室２６２はシール部材２６３を収容する。シール部材２６３は、斜面２６１が弁座１５５に当接するとき、凹部１５４と導出通路１５３との気密を維持する。   The contact portion 26 is formed in a truncated cone shape, and the inclined surface 261 of the contact portion 26 is formed so as to be able to contact or separate from the valve seat 155. A housing chamber 262 having a concave cross section is formed in the slope 261 in an annular shape. The storage chamber 262 stores the seal member 263. The seal member 263 maintains the airtightness between the recess 154 and the outlet passage 153 when the inclined surface 261 contacts the valve seat 155.

小径部２７は、当接部２６の斜面２６１とは反対側に接続している。小径部２７の外径は当接部２６の最大径および後述する大径部２８の外径より小さい。   The small diameter portion 27 is connected to the opposite side of the inclined surface 261 of the contact portion 26. The outer diameter of the small diameter portion 27 is smaller than the maximum diameter of the contact portion 26 and the outer diameter of the large diameter portion 28 described later.

大径部２８は、小径部２７の小径部２７が当接部２６と接続する側とは反対側に接続している。大径部２８には、小径部２７と接続する側に段差面２８１が形成される。大径部２８の段差面２８１と反対側には、シール部材３１２に当接可能な端面２８２が形成される。   The large diameter portion 28 is connected to the side opposite to the side where the small diameter portion 27 of the small diameter portion 27 is connected to the contact portion 26. A step surface 281 is formed on the large diameter portion 28 on the side connected to the small diameter portion 27. An end surface 282 that can contact the seal member 312 is formed on the side opposite to the step surface 281 of the large diameter portion 28.

弁体２５には、当接部２６、小径部２７および大径部２８を貫く軸方向に貫通孔２９が形成されている。貫通孔２９の開口は、当接部２６の小径部２７と接続する側とは反対側の端面２６４、および大径部２８の端面２８２に形成される。   A through hole 29 is formed in the valve body 25 in the axial direction passing through the contact portion 26, the small diameter portion 27 and the large diameter portion 28. The opening of the through hole 29 is formed in the end surface 264 opposite to the side connected to the small diameter portion 27 of the contact portion 26 and the end surface 282 of the large diameter portion 28.

可動コア３０は、ガイド筒２０内に収容される小外径部３０１、大外径部３０２、および中外径部３０３から構成され、一体に形成されている。可動コア３０は、磁性材料、例えば磁性ステンレス鋼で形成される。   The movable core 30 includes a small outer diameter portion 301, a large outer diameter portion 302, and a middle outer diameter portion 303 that are accommodated in the guide cylinder 20, and is formed integrally. The movable core 30 is made of a magnetic material such as magnetic stainless steel.

小外径部３０１は、所定の第１外径を有する棒状部材からなっている。可動コア３０がガイド筒２０内を軸方向に往復移動するとき、小外径部３０１の外周面が、ガイド筒２０の小径部、すなわち第２中径部２０４ｂ、第１小径部２０６、磁気遮断部２１、第２小径部２０７の内周面に対して摺動する。小外径部３０１の外周面には、耐摩耗性が高い非磁性めっき膜が施される。小外径部３０１の一端には、端面３２が形成される。   The small outer diameter portion 301 is a rod-shaped member having a predetermined first outer diameter. When the movable core 30 reciprocates in the guide cylinder 20 in the axial direction, the outer peripheral surface of the small outer diameter portion 301 is the small diameter portion of the guide cylinder 20, that is, the second medium diameter portion 204b, the first small diameter portion 206, and the magnetic shielding. Slide against the inner peripheral surface of the portion 21 and the second small diameter portion 207. A nonmagnetic plating film having high wear resistance is applied to the outer peripheral surface of the small outer diameter portion 301. An end face 32 is formed at one end of the small outer diameter portion 301.

大外径部３０２は、小外径部３０１の第１外径より大きい第２外径を有する棒状部材からなり、その外周面はガイド筒２０の大径部２０１の内周面に対応する位置にある。大外径部３０２の一端は、小外径部３０１の他端に接続する。大外径部３０２の第２外径の外周面と小外径部３０１の第１外径の外周面との境界には、ガイド筒２０の段差面２０ａ、２０ｂと相対するように段差面３０ａが形成される。   The large outer diameter portion 302 is a rod-shaped member having a second outer diameter larger than the first outer diameter of the small outer diameter portion 301, and the outer peripheral surface thereof is a position corresponding to the inner peripheral surface of the large diameter portion 201 of the guide tube 20. It is in. One end of the large outer diameter portion 302 is connected to the other end of the small outer diameter portion 301. At the boundary between the outer peripheral surface of the second outer diameter of the large outer diameter portion 302 and the outer peripheral surface of the first outer diameter of the small outer diameter portion 301, the step surface 30 a is opposed to the step surfaces 20 a and 20 b of the guide tube 20. Is formed.

中外径部３０３は、大外径部３０２の第２外径より小さい第３外径を有する棒状部材からなり、その外周面はガイド筒２０の大径部２０１の内周面に対応する位置にある。中外径部３０３の一端は、大外径部３０２の他端に接続する。   The middle outer diameter portion 303 is a rod-shaped member having a third outer diameter smaller than the second outer diameter of the large outer diameter portion 302, and the outer peripheral surface thereof is at a position corresponding to the inner peripheral surface of the large diameter portion 201 of the guide cylinder 20. is there. One end of the medium outer diameter portion 303 is connected to the other end of the large outer diameter portion 302.

中外径部３０３の他端部には凹部３１が形成され、凹部３１の内部には弁体２５の小径部２７の一部および大径部２８が収容される。このとき、凹部３１の内壁と弁体２５の大径部２８の外壁との間には隙間が形成される。
凹部３１の先端側の内壁には規制部材３１１が環状に設けられる。弁体２５が中外径部３０３の凹部３１の底面から離れる方向に移動するとき、規制部材３１１が弁体２５の段差面２８１に当接する。これにより、弁体２５は可動コア３０に対する相対移動の距離が規制される。また、凹部３１の底面にはシール部材３１２を収容する収容室３１３が形成されている。 A concave portion 31 is formed at the other end portion of the medium outer diameter portion 303, and a part of the small diameter portion 27 and the large diameter portion 28 of the valve body 25 are accommodated inside the concave portion 31. At this time, a gap is formed between the inner wall of the recess 31 and the outer wall of the large-diameter portion 28 of the valve body 25.
A regulating member 311 is provided in an annular shape on the inner wall on the distal end side of the recess 31. When the valve body 25 moves in a direction away from the bottom surface of the concave portion 31 of the medium outer diameter portion 303, the regulating member 311 contacts the step surface 281 of the valve body 25. Thereby, the distance of relative movement of the valve body 25 with respect to the movable core 30 is regulated. An accommodation chamber 313 for accommodating the seal member 312 is formed on the bottom surface of the recess 31.

摺動部３３は、可動コア３０の中外径部３０３と大外径部３０２とが接続する境界の段差面に接する位置に、中外径部３０３の全外周にわたってリング状に設けられている。摺動部３３は非磁性材料で形成され、その厚さおよび幅は、可動コア３０がガイド筒２０内を軸方向に往復移動するとき、摺動部３３の外周面がガイド筒２０の大径部２０１の内周面に対して摺動するものとなっている。摺動部３３の外周面には、耐摩耗性が高い非磁性めっき膜が施される。   The sliding portion 33 is provided in a ring shape over the entire outer periphery of the middle / outer diameter portion 303 at a position in contact with the stepped surface at the boundary where the middle / outer diameter portion 303 and the larger outer diameter portion 302 are connected to each other. The sliding portion 33 is formed of a nonmagnetic material, and the thickness and width of the sliding portion 33 are such that when the movable core 30 reciprocates in the guide tube 20 in the axial direction, the outer peripheral surface of the sliding portion 33 is the large diameter of the guide tube 20. It slides with respect to the inner peripheral surface of the part 201. A nonmagnetic plating film having high wear resistance is applied to the outer peripheral surface of the sliding portion 33.

ガイド筒２０の段差面２０ｂと可動コア３０の段差面３０ａとの間には、スプリング３４が設けられている。「付勢部材」としてのスプリング３４は、可動コア３０の段差面３０ａをガイド筒２０の段差面２０ｂから離間させ、可動コア３０を弁座１５５側に付勢する付勢力を発生する。
また、可動コア３０がガイド筒２０内を軸方向に往復移動するとき、可動コア３０の段差面３０ａがガイド筒２０の段差面２０ａに当接し、可動コア３０が弁座１５５と反対側に移動する距離が規制される。すなわち、ガイド筒２０の段差面２０ａは、可動コア３０の弁座１５５と反対側への移動に対するストッパとして機能する。 A spring 34 is provided between the step surface 20 b of the guide cylinder 20 and the step surface 30 a of the movable core 30. The spring 34 as the “biasing member” generates a biasing force that separates the stepped surface 30 a of the movable core 30 from the stepped surface 20 b of the guide cylinder 20 and biases the movable core 30 toward the valve seat 155.
Further, when the movable core 30 reciprocates in the guide cylinder 20 in the axial direction, the step surface 30a of the movable core 30 abuts on the step surface 20a of the guide cylinder 20, and the movable core 30 moves to the side opposite to the valve seat 155. The distance to be controlled is regulated. That is, the stepped surface 20a of the guide cylinder 20 functions as a stopper against the movement of the movable core 30 to the side opposite to the valve seat 155.

固定コア３５は、磁性材で形成されている棒状部材からなり、ガイド筒２０の第２小径部２０７の開口２０８内に固定されている。固定コア３５の一方の端面３６は、可動コア３０の端面３２と相対する。   The fixed core 35 is made of a rod-shaped member made of a magnetic material, and is fixed in the opening 208 of the second small diameter portion 207 of the guide cylinder 20. One end surface 36 of the fixed core 35 faces the end surface 32 of the movable core 30.

コイルアッセンブリ４０は、ガイド筒２０の径外方向にガイド筒２０の中径部２０４の一部、第１小径部２０６、磁気遮断部２１、および第２小径部２０７の一部を囲むように設けられている。コイルアッセンブリ４０は、コイル４１、ボビン４２、カバー４３、およびヨーク４４などから構成されている。   The coil assembly 40 is provided so as to surround a part of the medium diameter part 204 of the guide cylinder 20, the first small diameter part 206, the magnetic shielding part 21, and a part of the second small diameter part 207 in the radially outward direction of the guide cylinder 20. It has been. The coil assembly 40 includes a coil 41, a bobbin 42, a cover 43, a yoke 44, and the like.

コイル４１は、コネクタを介して供給される電流によりコイル４１周辺に磁界を形成する。
ボビン４２およびカバー４３は、コイル４１を覆うように設けられる非磁性部材である。ボビン４２およびカバー４３の径方向外側に磁性材から形成されるヨーク４４が設けられる。ヨーク４４は、両端をかしめることにより、コイル４１、ボビン４２およびカバー４３をガイド筒２０に固定する。
ヨーク４４と鍔部２０５との間には弾性部材４４１が設けられる。弾性部材４４１は、鍔部２０５から離れる方向にコイルアッセンブリ４０を付勢する。 The coil 41 forms a magnetic field around the coil 41 by the current supplied through the connector.
The bobbin 42 and the cover 43 are nonmagnetic members provided so as to cover the coil 41. A yoke 44 made of a magnetic material is provided outside the bobbin 42 and the cover 43 in the radial direction. The yoke 44 fixes the coil 41, the bobbin 42 and the cover 43 to the guide cylinder 20 by caulking both ends.
An elastic member 441 is provided between the yoke 44 and the flange portion 205. The elastic member 441 biases the coil assembly 40 in a direction away from the collar portion 205.

蓋部４５は、有底筒状に形成される金属部材である。蓋部４５の内壁にはねじ溝４５１が形成される。このねじ溝４５１がガイド筒２０の第２小径部２０７のねじ溝２０９とねじ結合することにより、蓋部４５はガイド筒２０の第２小径部２０７に組み付けられる。   The lid portion 45 is a metal member formed in a bottomed cylindrical shape. A screw groove 451 is formed on the inner wall of the lid 45. When the screw groove 451 is screwed to the screw groove 209 of the second small diameter portion 207 of the guide cylinder 20, the lid portion 45 is assembled to the second small diameter portion 207 of the guide cylinder 20.

蓋部４５とコイルアッセンブリ４０との間には、非磁性部材で形成されるスペーサ４６が設けられる。ヨーク４４と鍔部２０５との間に設けられた弾性部材４４１は、コイルアッセンブリ４０を鍔部２０５から離し、スペーサ４６を介して蓋部４５に押し付ける方向に付勢する。すなわち、弾性部材４４１は、コイルアッセンブリ４０をガイド筒２０の鍔部２０５と蓋部４５との間に安定して保持する機能を果たす。   A spacer 46 formed of a nonmagnetic member is provided between the lid 45 and the coil assembly 40. The elastic member 441 provided between the yoke 44 and the flange portion 205 urges the coil assembly 40 away from the flange portion 205 and presses it against the lid portion 45 via the spacer 46. That is, the elastic member 441 functions to stably hold the coil assembly 40 between the flange portion 205 and the lid portion 45 of the guide cylinder 20.

次に、第１実施形態による気体燃料用電磁弁装置１の動作および作用について、図２〜図４に基づいて説明する。   Next, the operation and action of the gaseous fuel electromagnetic valve device 1 according to the first embodiment will be described with reference to FIGS.

気体燃料用電磁弁装置１のコイル４１に電流が流れていないとき、可動コア３０にはスプリング３４の付勢力のみが作用し、可動コア３０は図２の紙面の左方向に付勢される。また、凹部１５４は導入通路１５２と連通し、凹部１５４は高圧の気体燃料が充満している。これにより、弁体２５の端面２８２はシール部材３１２に当接しつつ、可動コア３０に支持されている弁体２５の斜面２６１は、弁座１５５に当接している。したがって、導入通路１５２と導出通路１５３とは遮断されている。   When no current is flowing through the coil 41 of the gaseous fuel solenoid valve device 1, only the urging force of the spring 34 acts on the movable core 30, and the movable core 30 is urged to the left in FIG. The recess 154 communicates with the introduction passage 152, and the recess 154 is filled with high-pressure gaseous fuel. As a result, the end surface 282 of the valve body 25 is in contact with the seal member 312, and the slope 261 of the valve body 25 supported by the movable core 30 is in contact with the valve seat 155. Accordingly, the introduction passage 152 and the outlet passage 153 are blocked.

コイル４１に電流が流れると、コイル４１の周辺には磁気回路が形成される。そのうちの１つである磁気回路Ｍ１は、図３、図４に一点鎖線で表されるように、ヨーク４４、ガイド筒２０の第１小径部２０６、可動コア３０の小外径部３０１、端面３２、固定コア３５の端面３６、固定コア３５、ガイド筒２０の第２小径部２０７、および蓋部４５を通ってヨーク４４に戻る磁気回路である。   When a current flows through the coil 41, a magnetic circuit is formed around the coil 41. The magnetic circuit M1, which is one of them, includes a yoke 44, a first small-diameter portion 206 of the guide cylinder 20, a small outer-diameter portion 301 of the movable core 30, and an end surface, as shown by a one-dot chain line in FIGS. 32, a magnetic circuit that returns to the yoke 44 through the end face 36 of the fixed core 35, the fixed core 35, the second small diameter portion 207 of the guide cylinder 20, and the lid portion 45.

また、コイル４１に流れる電流が小さい場合、ヨーク４４、ガイド筒２０の第１小径部２０６、磁気遮断部２１、第２小径部２０７、および蓋部４５を通ってヨーク４４に戻る磁気回路が形成される。しかしながら、コイル４１に流れる電流が大きくなると、磁気遮断部２１は、肉厚が第１小径部２０６および第２小径部２０７に比べて薄く磁気飽和しやすいため、磁気遮断部２１を迂回するように、ヨーク４４、ガイド筒２０の第１小径部２０６、可動コア３０の小外径部３０１、ガイド筒２０の第２小径部２０７、および蓋部４５を通ってヨーク４４に戻る磁気回路が形成される。   Further, when the current flowing through the coil 41 is small, a magnetic circuit is formed that returns to the yoke 44 through the yoke 44, the first small diameter portion 206 of the guide cylinder 20, the magnetic blocking portion 21, the second small diameter portion 207, and the lid portion 45. Is done. However, when the current flowing through the coil 41 increases, the magnetic interrupting portion 21 is thinner than the first small diameter portion 206 and the second small diameter portion 207 and is likely to be magnetically saturated, so that the magnetic interrupting portion 21 is bypassed. , The yoke 44, the first small diameter portion 206 of the guide tube 20, the small outer diameter portion 301 of the movable core 30, the second small diameter portion 207 of the guide tube 20, and the magnetic circuit returning to the yoke 44 through the lid portion 45 are formed. The

さらに、コイル４１を流れる電流が大きくなると、小外径部３０１の外周面には非磁性めっき膜が施されているために小外径部３０１と第２小径部２０７との間は磁気飽和し、ヨーク４４、ガイド筒２０の第１小径部２０６、可動コア３０の小外径部３０１、端面３２、ガイド筒２０の第２小径部２０７、および蓋部４５を通ってヨーク４４に戻る図中の一点鎖線で表される磁気回路Ｍ２が形成される。   Further, when the current flowing through the coil 41 is increased, a magnetic saturation occurs between the small outer diameter portion 301 and the second small diameter portion 207 because the outer peripheral surface of the small outer diameter portion 301 is provided with a nonmagnetic plating film. , The yoke 44, the first small diameter portion 206 of the guide tube 20, the small outer diameter portion 301 of the movable core 30, the end face 32, the second small diameter portion 207 of the guide tube 20, and the lid portion 45. A magnetic circuit M2 represented by a one-dot chain line is formed.

磁気回路Ｍ１が形成されると、可動コア３０と固定コア３５との間に磁気吸引力Ｆ１が発生する。この磁気吸引力Ｆ１は、図３に示すように、可動コア３０の端面３２を固定コア３５の端面３６の方向に吸引する、ガイド筒２０の中心軸φに対して平行な磁気吸引力である。また、磁気回路Ｍ２が形成されると、可動コア３０の端面３２とガイド筒２０の第２小径部２０７との間に磁気吸引力Ｆ２が発生する。磁気吸引力Ｆ２はガイド筒２０の中心軸φに対して傾斜している磁気吸引力である。   When the magnetic circuit M <b> 1 is formed, a magnetic attractive force F <b> 1 is generated between the movable core 30 and the fixed core 35. As shown in FIG. 3, the magnetic attractive force F <b> 1 is a magnetic attractive force parallel to the central axis φ of the guide cylinder 20 that attracts the end surface 32 of the movable core 30 in the direction of the end surface 36 of the fixed core 35. . When the magnetic circuit M <b> 2 is formed, a magnetic attractive force F <b> 2 is generated between the end face 32 of the movable core 30 and the second small diameter portion 207 of the guide cylinder 20. The magnetic attractive force F <b> 2 is a magnetic attractive force that is inclined with respect to the central axis φ of the guide cylinder 20.

また、コイル４１に電流が流れると、磁気回路Ｍ１，Ｍ２とは異なる磁気回路Ｍ３が形成される。磁気回路Ｍ３は、ヨーク４４、ガイド筒２０の中径部２０４、段差面２０ａ、可動コア３０の段差面３０ａ、大外径部３０２、小外径部３０１を通る磁気回路である。磁気回路Ｍ３が形成されると、図３、図４に示すように、ガイド筒２０の段差面２０ａと可動コア３０の段差面３０ａとの間に磁気吸引力Ｆ３が発生する。磁気吸引力Ｆ３は、可動コア３０の段差面３０ａをガイド筒２０の段差面２０ａの方向、すなわち可動コア３０を固定コア３５の方向に吸引するガイド筒２０の中心軸φに対して平行な磁気吸引力である。   When a current flows through the coil 41, a magnetic circuit M3 different from the magnetic circuits M1 and M2 is formed. The magnetic circuit M3 is a magnetic circuit that passes through the yoke 44, the middle diameter portion 204 of the guide cylinder 20, the step surface 20a, the step surface 30a of the movable core 30, the large outer diameter portion 302, and the small outer diameter portion 301. When the magnetic circuit M3 is formed, a magnetic attractive force F3 is generated between the stepped surface 20a of the guide cylinder 20 and the stepped surface 30a of the movable core 30 as shown in FIGS. The magnetic attractive force F3 is a magnetic force parallel to the central axis φ of the guide cylinder 20 that attracts the step surface 30a of the movable core 30 in the direction of the step surface 20a of the guide cylinder 20, that is, in the direction of the fixed core 35. It is suction power.

したがって、磁気吸引力Ｆ１および磁気吸引力Ｆ２のガイド筒２０の中心軸φに対する平行な成分により可動コア３０の端面３２を吸引する固定コア３５の端面３６を第１吸引面と呼ぶと、磁気吸引力Ｆ３により可動コア３０の段差面３０ａを吸引するガイド筒２０の段差面２０ａを第２吸引面と呼ぶことができる。   Therefore, when the end surface 36 of the fixed core 35 that attracts the end surface 32 of the movable core 30 by the component parallel to the central axis φ of the guide cylinder 20 of the magnetic attraction force F1 and the magnetic attraction force F2 is called a first attraction surface, the magnetic attraction The step surface 20a of the guide cylinder 20 that sucks the step surface 30a of the movable core 30 by the force F3 can be referred to as a second suction surface.

このように、コイル４１に電流が流れると、可動コア３０は磁気吸引力Ｆ１、Ｆ２、Ｆ３によりスプリング３４の付勢力に抗して固定コア３５の方向に移動する。可動コア３０が固定コア３５の方向に移動すると、図３に示すように、弁体２５の端面２８２とシール部材３１２とが離間し、隙間３１４が形成される。
凹部１５４に充満している高圧の気体燃料は、規制部材３１１と弁体２５の小径部２７の外壁との隙間、および可動コア３０の凹部３１の内壁と弁体２５の大径部２８の外壁との隙間を通って、弁体２５の端面２８２とシール部材３１２との間の隙間３１４に流入する。隙間３１４に流入した気体燃料は、貫通孔２９を通って導出通路１５３に流出する。これにより、凹部１５４の圧力と導出通路１５３の圧力との差が小さくなる。 Thus, when a current flows through the coil 41, the movable core 30 moves in the direction of the fixed core 35 against the urging force of the spring 34 by the magnetic attractive forces F1, F2, and F3. When the movable core 30 moves in the direction of the fixed core 35, the end face 282 of the valve body 25 and the seal member 312 are separated from each other as shown in FIG.
The high-pressure gaseous fuel filled in the recess 154 includes a gap between the regulating member 311 and the outer wall of the small-diameter portion 27 of the valve body 25, and an inner wall of the recess 31 of the movable core 30 and an outer wall of the large-diameter portion 28 of the valve body 25. And flows into the gap 314 between the end face 282 of the valve body 25 and the seal member 312. The gaseous fuel that has flowed into the gap 314 flows out through the through hole 29 and into the outlet passage 153. Thereby, the difference between the pressure of the recess 154 and the pressure of the outlet passage 153 is reduced.

さらに、可動コア３０が固定コア３５の方向に移動すると、図４に示すように、規制部材３１１が弁体２５の段差面２８１に当接する。このため、可動コア３０がさらに固定コア３５の方向に移動すると、弁体２５は可動コア３０とともに固定コア３５の方向に移動して、弁体２５の斜面２６１が弁座１５５から離間する。これにより、凹部１５４の気体燃料は、弁体２５と弁座１５５との間に形成された隙間を通って導出通路１５３に流出する。   Further, when the movable core 30 moves in the direction of the fixed core 35, the regulating member 311 contacts the step surface 281 of the valve body 25 as shown in FIG. Therefore, when the movable core 30 further moves in the direction of the fixed core 35, the valve body 25 moves in the direction of the fixed core 35 together with the movable core 30, and the inclined surface 261 of the valve body 25 is separated from the valve seat 155. As a result, the gaseous fuel in the recess 154 flows out into the outlet passage 153 through a gap formed between the valve body 25 and the valve seat 155.

第１実施形態による気体燃料用電磁弁装置１の作用および効果をまとめると、次のようになる。   The actions and effects of the gaseous fuel electromagnetic valve device 1 according to the first embodiment are summarized as follows.

（１）気体燃料用電磁弁装置１では、コイル４１への通電時、３つの磁気回路Ｍ１、Ｍ２、Ｍ３が形成される。このうち、磁気回路Ｍ２は、ガイド筒２０の第２小径部２０７から、磁気遮断部２１を迂回し、可動コア３０の端面３２、大外径部３０２、およびガイド筒２０第１小径部２０６を通るように形成される。このとき、ガイド筒２０の第２小径部２０７と可動コア３０の端面３２との間にはガイド筒２０の中心軸φに対して傾斜している磁気吸引力Ｆ２が発生する。磁気吸引力Ｆ２の中心軸φに対する平行な成分により可動コア３０は固定コア３５の方向に移動する。
また、磁気回路Ｍ３は、ガイド筒２０の中径部２０４、段差面２０ａ、可動コア３０の段差面３０ａ、大外径部３０２、小外径部３０１を通るように形成される。このとき、ガイド筒２０の段差面２０ａと可動コア３０の段差面３０ａとの間に、ガイド筒２０の中心軸φに対して平行な磁気吸引力Ｆ３が発生する。磁気吸引力Ｆ３により可動コア３０は固定コア３５の方向に移動する。
こうして、磁気回路Ｍ１により発生する磁気吸引力Ｆ１だけでなく、磁気回路Ｍ２により発生する磁気吸引力Ｆ２および磁気回路Ｍ３により発生する磁気吸引力Ｆ３によっても可動コア３０は固定コア３５の方向に移動する。
このため、全体として所定の吸引力を発生するとき、そのうちの磁気吸引力Ｆ１の割合が小さくなる。すなわち、固定コア３５の端面３６に対する可動コア３０の端面３２の対向面積を相対的に小さくすることが可能になり、可動コア３０の直径を小さくすることができる。したがって、気体燃料用電磁弁装置１の体格を小さくすることができる。 (1) In the electromagnetic valve device 1 for gaseous fuel, when the coil 41 is energized, three magnetic circuits M1, M2, and M3 are formed. Among these, the magnetic circuit M2 bypasses the magnetic blocking portion 21 from the second small diameter portion 207 of the guide cylinder 20, and connects the end face 32 of the movable core 30, the large outer diameter portion 302, and the guide cylinder 20 first small diameter portion 206. It is formed to pass. At this time, a magnetic attractive force F <b> 2 that is inclined with respect to the central axis φ of the guide cylinder 20 is generated between the second small diameter portion 207 of the guide cylinder 20 and the end surface 32 of the movable core 30. The movable core 30 moves in the direction of the fixed core 35 by a component parallel to the central axis φ of the magnetic attractive force F2.
The magnetic circuit M3 is formed so as to pass through the middle diameter portion 204 of the guide cylinder 20, the step surface 20a, the step surface 30a of the movable core 30, the large outer diameter portion 302, and the small outer diameter portion 301. At this time, a magnetic attractive force F3 parallel to the central axis φ of the guide tube 20 is generated between the step surface 20a of the guide tube 20 and the step surface 30a of the movable core 30. The movable core 30 moves in the direction of the fixed core 35 by the magnetic attractive force F3.
Thus, the movable core 30 moves in the direction of the fixed core 35 not only by the magnetic attractive force F1 generated by the magnetic circuit M1, but also by the magnetic attractive force F2 generated by the magnetic circuit M2 and the magnetic attractive force F3 generated by the magnetic circuit M3. To do.
For this reason, when a predetermined attractive force is generated as a whole, the ratio of the magnetic attractive force F1 is reduced. That is, the opposed area of the end surface 32 of the movable core 30 to the end surface 36 of the fixed core 35 can be made relatively small, and the diameter of the movable core 30 can be reduced. Therefore, the physique of the gaseous fuel electromagnetic valve device 1 can be reduced.

（２）上述のように、可動コア３０の直径が小さくすることが可能になると、ガイド筒２０内に充満する高圧の気体燃料に対する耐圧性を有するためのガイド筒２０の肉厚を相対的に薄くすることができる。
具体的には、ガイド筒２０内の気体燃料の圧力をＰ（Ｐａ）、ガイド筒２０の内径をＤ（ｍ）、肉厚をｔ（ｍ）とすると、中心軸φ方向の応力σ１（Ｎ）および径方向の応力σ２（Ｎ）は、以下の式で表される。
σ１＝（Ｐ×Ｄ）／（４×ｔ） ・・・式１
σ２＝（Ｐ×Ｄ）／（２×ｔ） ・・・式２
式１、２より、内径Ｄが大きくなると、中心軸φ方向の応力σ１および径方向の応力σ２は大きくなり、肉厚ｔを大きくする必要がある。第１実施形態による気体燃料用電磁弁装置１では、比較的内径Ｄが小さくなるため、中心軸φ方向の応力σ１および径方向の応力σ２が小さくなる。これにより、肉厚ｔを薄くすることができる。したがって、気体燃料用電磁弁装置１の体格をさらに小さくすることができる。 (2) As described above, when the diameter of the movable core 30 can be reduced, the wall thickness of the guide cylinder 20 for having a pressure resistance against the high-pressure gaseous fuel filling the guide cylinder 20 is relatively set. Can be thinned.
Specifically, when the pressure of the gaseous fuel in the guide cylinder 20 is P (Pa), the inner diameter of the guide cylinder 20 is D (m), and the wall thickness is t (m), the stress σ1 (N ) And radial stress σ2 (N) are expressed by the following equations.
σ1 = (P × D) / (4 × t) Equation 1
σ2 = (P × D) / (2 × t) Equation 2
From Equations 1 and 2, when the inner diameter D increases, the stress σ1 in the central axis φ direction and the stress σ2 in the radial direction increase, and the thickness t needs to be increased. In the electromagnetic valve device 1 for gaseous fuel according to the first embodiment, since the inner diameter D is relatively small, the stress σ1 in the central axis φ direction and the stress σ2 in the radial direction are small. Thereby, the thickness t can be reduced. Therefore, the physique of the gaseous fuel electromagnetic valve device 1 can be further reduced.

（３）気体燃料用電磁弁装置１において、可動コア３０は、飽和磁束密度が高い磁性ステンレス鋼を母材としつつ、可動コア３０がガイド筒２０内を往復移動するとき、可動コア３０の小外径部３０１および可動コア３０の中外径部３０３の外周に設けられた摺動部３３がガイド筒２０の内周面に摺動する。このため、可動コア３０は、磁気回路を形成しやすい高い磁気透過性という機能と、可動コア３０の外周面全体がガイド筒２０の内周面に摺動する場合に比べて摩擦抵抗が小さくなり、摺動動作が容易に且つ安定して行われる摺動容易性および安定性という機能とを兼ね備える。
このことにより、小さい吸引力で開弁が可能となり、低電圧動作性が向上する。したがって、コイルアッセンブリ４０の小型化が可能となり、気体燃料用電磁弁装置１の体格をさらに小さくすることができる。 (3) In the solenoid valve device 1 for gaseous fuel, the movable core 30 is small when the movable core 30 reciprocates in the guide cylinder 20 while using magnetic stainless steel having a high saturation magnetic flux density as a base material. A sliding portion 33 provided on the outer periphery of the outer diameter portion 301 and the middle outer diameter portion 303 of the movable core 30 slides on the inner peripheral surface of the guide tube 20. For this reason, the movable core 30 has a function of high magnetic permeability that is easy to form a magnetic circuit, and the frictional resistance is smaller than when the entire outer peripheral surface of the movable core 30 slides on the inner peripheral surface of the guide tube 20. In addition, the sliding operation is easily and stably performed, and has the functions of sliding ease and stability.
As a result, the valve can be opened with a small suction force, and the low-voltage operability is improved. Therefore, the coil assembly 40 can be reduced in size, and the physique of the gaseous fuel electromagnetic valve device 1 can be further reduced.

（４）ガイド筒２０の内周面に摺動する小外径部３０１および摺動部３３のそれぞれの外周面には、耐摩耗性が高いめっき膜が施されている。したがって、摺動動作のときの摩耗による変形を防止することができる。   (4) On the outer peripheral surfaces of the small outer diameter portion 301 and the sliding portion 33 that slide on the inner peripheral surface of the guide cylinder 20, a plating film having high wear resistance is applied. Therefore, deformation due to wear during sliding operation can be prevented.

（５）ガイド筒２０の第１小径部２０６、磁気遮断部２１、および第２小径部２０７の内周面と摺動する可動コア３０の小外径部３０１の外周面には、非磁性めっき膜が施される。このため、ガイド筒２０と可動コア３０との間に磁気回路が形成されるとき、第１小径部２０６および第２小径部２０７の内周面と小外径部３０１の外周面との間に発生する磁気吸引力のうち、ガイド筒２０の中心軸φに対して垂直方向に発生する磁気吸引力は、極めて小さくなる。
これにより、ガイド筒２０の中心軸φに対して垂直方向に発生する磁気吸引力を原因とする可動コア３０のガイド筒２０に対する偏心率は小さくなる。また、摺動動作のときの摩擦抵抗が小さくなり、小さい吸引力で開弁が可能な低電圧動作性が向上する。したがって、コイルアッセンブリ４０の小型化が可能となり、気体燃料用電磁弁装置１の体格をさらに小さくすることができる。 (5) Nonmagnetic plating is applied to the outer peripheral surface of the small outer diameter portion 301 of the movable core 30 that slides with the inner peripheral surfaces of the first small diameter portion 206, the magnetic blocking portion 21, and the second small diameter portion 207 of the guide tube 20. A membrane is applied. For this reason, when a magnetic circuit is formed between the guide cylinder 20 and the movable core 30, between the inner peripheral surface of the first small diameter portion 206 and the second small diameter portion 207 and the outer peripheral surface of the small outer diameter portion 301. Of the generated magnetic attractive force, the magnetic attractive force generated in the direction perpendicular to the central axis φ of the guide cylinder 20 is extremely small.
As a result, the eccentricity of the movable core 30 with respect to the guide cylinder 20 due to the magnetic attractive force generated in the direction perpendicular to the central axis φ of the guide cylinder 20 is reduced. Further, the frictional resistance during the sliding operation is reduced, and the low-voltage operability that enables valve opening with a small suction force is improved. Therefore, the coil assembly 40 can be reduced in size, and the physique of the gaseous fuel electromagnetic valve device 1 can be further reduced.

（６）可動コア３０の端面３２の全面と相対する固定コア３５の端面３６の全面が第１吸引面となっていることに加え、可動コア３０の段差面３０ａと相対するガイド筒２０の段差面２０ａが第２吸引面となっている。このため、開弁時に必要な可動コア３０に対する吸引力を容易に確保することができる。このことにより、コイル４１のコイル巻き内径を小さくすることが可能になる。したがって、コイルアッセンブリ４０の小型化が可能となり、気体燃料用電磁弁装置１の体格をさらに小さくすることができる。   (6) The entire surface of the end surface 36 of the fixed core 35 facing the entire surface of the end surface 32 of the movable core 30 is the first suction surface, and the step of the guide cylinder 20 facing the step surface 30a of the movable core 30. The surface 20a is a second suction surface. For this reason, the suction | attraction force with respect to the movable core 30 required at the time of valve opening can be ensured easily. As a result, the coil winding inner diameter of the coil 41 can be reduced. Therefore, the coil assembly 40 can be reduced in size, and the physique of the gaseous fuel electromagnetic valve device 1 can be further reduced.

（７）ガイド筒２０の段差面２０ｂと可動コア３０の段差面３０ａとの間に設けられるスプリング３４は、ガイド筒２０の段差面２０ｂを可動コア３０の段差面３０ａから離間させ、可動コア３０を弁座１５５の方向に付勢する。これにより、コイル４１への通電が０となり磁気吸引力Ｆ１、Ｆ２が０となるとき、可動コア３０は迅速に弁座１５５の方向に移動し、可動コア３０の凹部３１の底面に形成される収容室３１３に収容されたシール部材３１２を弁体２５の端面２８２に当接させ、さらに弁体２５の斜面２６１を弁座１５５に当接させる。したがって、気体燃料用電磁弁装置１での閉弁を迅速に行うことができる。   (7) The spring 34 provided between the step surface 20 b of the guide cylinder 20 and the step surface 30 a of the movable core 30 separates the step surface 20 b of the guide cylinder 20 from the step surface 30 a of the movable core 30. Is urged in the direction of the valve seat 155. As a result, when the coil 41 is de-energized and the magnetic attractive forces F1 and F2 are zero, the movable core 30 quickly moves toward the valve seat 155 and is formed on the bottom surface of the recess 31 of the movable core 30. The seal member 312 accommodated in the accommodation chamber 313 is brought into contact with the end surface 282 of the valve body 25, and the slope 261 of the valve body 25 is brought into contact with the valve seat 155. Therefore, the valve closing in the gaseous fuel electromagnetic valve device 1 can be performed quickly.

（８）可動コア３０がガイド筒２０内を固定コア３５の方向に移動するとき、可動コア３０の段差面３０ａがガイド筒２０の段差面２０ａに当接し、可動コア３０が固定コア３５の方向に移動する距離が規制される。この構成により、可動コア３０の段差面３０ａがガイド筒２０の段差面２０ａに当接した状態で可動コア３０の端面３２と固定コア３５の端面３６との間には所定の隙間が保持される。このため、可動コア３０がガイド筒２０内を軸方向に往復移動するとき、可動コア３０が固定コア３５に衝突して変形や破損を生じることを防止することができる。   (8) When the movable core 30 moves in the guide cylinder 20 in the direction of the fixed core 35, the step surface 30 a of the movable core 30 abuts on the step surface 20 a of the guide cylinder 20, and the movable core 30 is in the direction of the fixed core 35. The distance traveled to is restricted. With this configuration, a predetermined gap is maintained between the end surface 32 of the movable core 30 and the end surface 36 of the fixed core 35 in a state where the step surface 30 a of the movable core 30 is in contact with the step surface 20 a of the guide cylinder 20. . For this reason, when the movable core 30 reciprocates in the guide cylinder 20 in the axial direction, the movable core 30 can be prevented from colliding with the fixed core 35 and causing deformation or breakage.

（９）電磁弁装置において、コイルへの通電が０となり磁気吸引力が０となると、可動コアの固定コア側の端面と固定コアの可動コア側の端面とが当接すると磁束が残留し、可動コアと固定コアとが迅速に離れることができなくなる。気体燃料用電磁弁装置１では、摺動部３３の大外径部３０２側の端面がガイド筒２０の段差面２０ａに当接した状態で可動コア３０の端面３２と固定コア３５の端面３６との間には所定の隙間が保持される。
これにより、コイル４１への通電が０となり磁気吸引力が０となるとき、可動コア３０と固定コア３５との間に磁束は残留しないため、可動コアと固定コアとは迅速に離れることができる。したがって、気体燃料用電磁弁装置１での閉弁をさらに迅速に行うことができる。 (9) In the solenoid valve device, when the energization to the coil is 0 and the magnetic attractive force is 0, the magnetic flux remains when the end surface of the movable core on the fixed core side and the end surface of the fixed core on the movable core side abut. The movable core and the fixed core cannot be separated quickly. In the gaseous fuel solenoid valve device 1, the end surface 32 of the movable core 30 and the end surface 36 of the fixed core 35 are arranged with the end surface of the sliding portion 33 on the large outer diameter portion 302 side in contact with the step surface 20 a of the guide tube 20. A predetermined gap is maintained between the two.
Thereby, when the energization to the coil 41 becomes 0 and the magnetic attractive force becomes 0, no magnetic flux remains between the movable core 30 and the fixed core 35, so that the movable core and the fixed core can be separated quickly. . Accordingly, the valve closing in the gaseous fuel electromagnetic valve device 1 can be performed more quickly.

（１０）ガイド筒２０の鍔部２０５とコイルアッセンブリ４０のヨーク４４との間には弾性部材４４１が設けられている。この弾性部材４４１は、コイルアッセンブリ４０を蓋部４５に押し付ける方向に付勢する。したがって、コイルアッセンブリ４０をガイド筒２０の鍔部２０５と蓋部４５との間に安定して保持することができる。   (10) An elastic member 441 is provided between the flange portion 205 of the guide cylinder 20 and the yoke 44 of the coil assembly 40. The elastic member 441 biases the coil assembly 40 in a direction in which the coil assembly 40 is pressed against the lid portion 45. Therefore, the coil assembly 40 can be stably held between the flange portion 205 and the lid portion 45 of the guide tube 20.

（第２実施形態）
次に、本発明の第２実施形態による気体燃料用電磁弁装置を図５に基づいて説明する。第２実施形態は、第１実施形態とガイド筒、可動コア、および固定コアの形状、ならびにスプリングの配置において異なる。なお、第１実施形態と実質的に同一の部位には同一の符号を付し、説明を省略する。 (Second Embodiment)
Next, a solenoid valve device for gaseous fuel according to a second embodiment of the present invention will be described with reference to FIG. The second embodiment differs from the first embodiment in the shapes of the guide tube, the movable core, and the fixed core, and the arrangement of the springs. In addition, the same code | symbol is attached | subjected to the site | part substantially the same as 1st Embodiment, and description is abbreviate | omitted.

第２実施形態による気体燃料用電磁弁装置２では、図５に示すように、可動コア３０の端面３２に凹部３２１が形成されている。凹部３２１に対応して固定コア３５の端面３６にも凹部３６１が形成されている。   In the gaseous fuel electromagnetic valve device 2 according to the second embodiment, as shown in FIG. 5, a recess 321 is formed in the end surface 32 of the movable core 30. A recess 361 is also formed on the end surface 36 of the fixed core 35 corresponding to the recess 321.

第２実施形態による気体燃料用電磁弁装置２では、第１実施形態におけるスプリング３４は設けられておらず、代わりに可動コア３０の凹部３２１の底面と固定コア３５の凹部３６１の底面との間にスプリング３４１が設けられる。「付勢部材」としてのスプリング３４１は、第１実施形態におけるスプリング３４と同様の機能を果たし、具体的には可動コア３０の端面３２を固定コア３５の端面３６から離間させ、可動コア３０を弁座１５５の方向に付勢する付勢力を発生する。   In the solenoid valve device 2 for gaseous fuel according to the second embodiment, the spring 34 in the first embodiment is not provided, and instead, between the bottom surface of the concave portion 321 of the movable core 30 and the bottom surface of the concave portion 361 of the fixed core 35. A spring 341 is provided. The spring 341 as the “biasing member” performs the same function as the spring 34 in the first embodiment. Specifically, the end surface 32 of the movable core 30 is separated from the end surface 36 of the fixed core 35, thereby moving the movable core 30. A biasing force that biases in the direction of the valve seat 155 is generated.

また、第１実施形態における第１中径部２０４ａはなくなり、中径部２０４全体が第３内径を有する第２中径部２０４ｂとなる。このために、ガイド筒２０の第２中径部２０４ｂ、第１小径部２０６、磁気遮断部２１、および第２小径部２０７が、全て同一の第３内径を有することになる。ガイド筒２０の大径部２０１の第１内径の内周面と第２中径部２０４ｂの第３内径の内周面との境界には、第１実施形態における段差面２０ａより大きい面積を有する段差面２０ｃが形成される。段差面２０ｃは、特許請求の範囲に記載の「第２段差面」に相当する。
こうして、第１吸引面となる固定コア３５の端面３６の面積が第１実施形態における端面３６の面積より小さくなる一方で、第２吸引面となるガイド筒２０の段差面２０ｃの面積が第１実施形態における段差面２０ａの面積より大きくなっている。 Further, the first medium diameter portion 204a in the first embodiment is eliminated, and the entire medium diameter portion 204 becomes a second medium diameter portion 204b having a third inner diameter. For this reason, the second medium diameter portion 204b, the first small diameter portion 206, the magnetic shielding portion 21, and the second small diameter portion 207 of the guide cylinder 20 all have the same third inner diameter. The boundary between the inner peripheral surface of the first inner diameter of the large diameter portion 201 of the guide cylinder 20 and the inner peripheral surface of the third inner diameter of the second medium diameter portion 204b has an area larger than the step surface 20a in the first embodiment. A step surface 20c is formed. The step surface 20c corresponds to a “second step surface” recited in the claims.
Thus, while the area of the end surface 36 of the fixed core 35 serving as the first suction surface is smaller than the area of the end surface 36 in the first embodiment, the area of the step surface 20c of the guide cylinder 20 serving as the second suction surface is the first. It is larger than the area of the step surface 20a in the embodiment.

また、可動コア３０がガイド筒２０内を固定コア３５の方向に移動するとき、可動コア３０の段差面３０ａが、第２実施形態におけるガイド筒２０の段差面２０ａの代わりに段差面２０ｃに当接する。段差面３０ａが段差面２０ｃに当接した状態で可動コア３０の端面３２と固定コア３５の端面３６との間には所定の隙間が保持される。すなわち、ガイド筒２０の段差面２０ｃは、可動コア３０の固定コア３５の方向への移動に対するストッパとして機能する。   Further, when the movable core 30 moves in the guide cylinder 20 toward the fixed core 35, the step surface 30a of the movable core 30 contacts the step surface 20c instead of the step surface 20a of the guide cylinder 20 in the second embodiment. Touch. A predetermined gap is maintained between the end surface 32 of the movable core 30 and the end surface 36 of the fixed core 35 with the step surface 30 a in contact with the step surface 20 c. That is, the step surface 20 c of the guide cylinder 20 functions as a stopper against the movement of the movable core 30 in the direction of the fixed core 35.

以上のことから、第２実施形態による気体燃料用電磁弁装置２は、第１実施形態による効果（１）〜（１０）と同様の効果を奏することができる。   From the above, the electromagnetic valve device 2 for gaseous fuel according to the second embodiment can achieve the same effects as the effects (1) to (10) according to the first embodiment.

（第３実施形態）
次に、本発明の第３実施形態による気体燃料用電磁弁装置を図６に基づいて説明する。第３実施形態は、第２実施形態と可動コアの形状において異なる。なお、第２実施形態と実質的に同一の部位には同一の符号を付し、説明を省略する。 (Third embodiment)
Next, a solenoid valve device for gaseous fuel according to a third embodiment of the present invention will be described with reference to FIG. The third embodiment differs from the second embodiment in the shape of the movable core. In addition, the same code | symbol is attached | subjected to the site | part substantially the same as 2nd Embodiment, and description is abbreviate | omitted.

第３実施形態による気体燃料用電磁弁装置３では、図６に示すように、可動コア３０において、第２実施形態における大外径部３０２および中外径部３０３に相当する部分が、第２実施形態における大外径部３０２の第３外径と等しい第３外径を有する大外径部３０４となっている。
このことに対応して、第３実施形態では、第２実施形態における摺動部３３は設けられていない。したがって、可動コア３０がガイド筒２０内を往復移動するとき、可動コア３０の小外径部３０１がガイド筒２０の内周面に摺動する。このため、可動コア３０の外周面全体がガイド筒２０の内周面に摺動する場合に比べて摩擦抵抗が小さくなり、摺動動作が容易に且つ安定して行われる。 In the electromagnetic valve device 3 for gaseous fuel according to the third embodiment, as shown in FIG. 6, portions of the movable core 30 corresponding to the large outer diameter portion 302 and the middle outer diameter portion 303 in the second embodiment are the second embodiment. The large outer diameter portion 304 has a third outer diameter equal to the third outer diameter of the large outer diameter portion 302 in the form.
Corresponding to this, in the third embodiment, the sliding portion 33 in the second embodiment is not provided. Therefore, when the movable core 30 reciprocates in the guide cylinder 20, the small outer diameter portion 301 of the movable core 30 slides on the inner peripheral surface of the guide cylinder 20. For this reason, compared with the case where the whole outer peripheral surface of the movable core 30 slides on the inner peripheral surface of the guide cylinder 20, the frictional resistance is reduced, and the sliding operation is performed easily and stably.

以上のことから、第３実施形態による気体燃料用電磁弁装置３は、第１実施形態による効果（１）〜（１０）と同様の効果を奏することができる。   From the above, the electromagnetic valve device 3 for gaseous fuel according to the third embodiment can achieve the same effects as the effects (1) to (10) according to the first embodiment.

（他の実施形態）
（ア）上述の実施形態では、気体燃料用電磁弁装置は、気体燃料をエンジンに供給する気体燃料供給システムに適用され、気体燃料の流れを遮断または許容するとした。しかしながら、本発明の高圧流体用電磁弁装置が適用されるシステムはこれに限定されるものではなく、ガイド筒内に充満する高圧流体の流れを電磁力により遮断または許容する電磁弁装置であればよい。 (Other embodiments)
(A) In the above-described embodiment, the electromagnetic valve device for gaseous fuel is applied to a gaseous fuel supply system that supplies gaseous fuel to the engine, and interrupts or allows the flow of gaseous fuel. However, the system to which the electromagnetic valve device for high-pressure fluid of the present invention is applied is not limited to this, and any electromagnetic valve device that blocks or allows the flow of high-pressure fluid filling the guide cylinder by electromagnetic force. Good.

（イ）上述の実施形態では、気体燃料用電磁弁装置は、弁体に貫通孔が形成され、弁体の斜面が座面より離間する前に貫通孔を介して導入通路と導出通路とが連通するパイロット弁であるとした。しかしながら、気体燃料用電磁弁装置はこれに限定されるものではない。   (A) In the above-described embodiment, the solenoid valve device for gaseous fuel has a through hole formed in the valve body, and the introduction passage and the discharge passage are formed through the through hole before the inclined surface of the valve body is separated from the seat surface. It is assumed that the pilot valve is in communication. However, the electromagnetic valve device for gaseous fuel is not limited to this.

（ウ）上述の実施形態では、ガイド筒および可動コアはクロムを含有する磁性ステンレス鋼から形成されるとした。しかしながら、可動コアおよびガイド筒を形成する材料はこれに限定されるものではなく、磁性材料であればよい。   (C) In the above-described embodiment, the guide tube and the movable core are made of magnetic stainless steel containing chromium. However, the material forming the movable core and the guide cylinder is not limited to this, and any magnetic material may be used.

（エ）上述の実施形態では、可動コアの磁気遮断部は、第１小径部および第２小径部と同じ磁性ステンレス鋼を材料とし、第１小径部および第２小径部に比べて肉厚が薄くなるように形成されたものを用いている。しかしながら、磁気遮断部は、クロムを含有する磁性ステンレス鋼が改質処理により非磁性材料に改質されたものを用いてもよい。このようにして形成した磁気遮断部も、コイルの通電により形成される磁束が流れにくく磁気飽和しやすい。
さらにまた、可動コアの磁気遮断部は、薄肉厚化と非磁性化とを組み合わせて、非磁性材料を用い、且つ第１小径部および第２小径部に比べて肉厚が薄くなるように形成してもよい。 (D) In the above-described embodiment, the magnetic shielding part of the movable core is made of the same magnetic stainless steel as the first small diameter part and the second small diameter part, and has a wall thickness compared to the first small diameter part and the second small diameter part. The one formed to be thin is used. However, the magnetic shielding part may be a magnetic stainless steel containing chromium that has been modified to a nonmagnetic material by a modification treatment. The magnetic blocking portion formed in this way also tends to be magnetically saturated because the magnetic flux formed by energization of the coil does not flow easily.
Furthermore, the magnetic interrupting portion of the movable core is formed by using a non-magnetic material in combination with thinning and non-magnetization so that the thickness is thinner than the first small diameter portion and the second small diameter portion. May be.

（オ）上述の実施形態では、磁気遮断部の肉厚は０．６〜０．９ｍｍであるとした。しかしながら、磁気遮断部の肉厚はこれに限定されない。第１小径部および第２小径部の肉厚より薄ければよい。   (E) In the above-described embodiment, the thickness of the magnetic shielding portion is 0.6 to 0.9 mm. However, the thickness of the magnetic shield is not limited to this. What is necessary is just to be thinner than the thickness of a 1st small diameter part and a 2nd small diameter part.

（カ）上述の実施形態では、摺動部は、可動コアの小径部の全外周にわたってリング状に設けられている。しかしながら、摺動部は、小径部の全外周にわたって所定の間隔をおいて複数に分割して設けてもよい。   (F) In the above-described embodiment, the sliding portion is provided in a ring shape over the entire outer periphery of the small-diameter portion of the movable core. However, the sliding portion may be provided by being divided into a plurality at predetermined intervals over the entire outer periphery of the small diameter portion.

（キ）上述の実施形態では、ガイド筒に内周面に対して摺動する突部および摺動部の外周面には耐摩耗性が高い非磁性めっき膜が施されている。しかしながら、非磁性めっき膜でなく、耐摩耗性が高い磁性めっき膜を施してもよい。また、めっき膜自体を施さなくてもよい。   (G) In the above-described embodiment, the non-magnetic plating film having high wear resistance is applied to the protrusion that slides on the inner peripheral surface of the guide tube and the outer peripheral surface of the sliding portion. However, a magnetic plating film having high wear resistance may be applied instead of the nonmagnetic plating film. Moreover, it is not necessary to provide the plating film itself.

（ク）上述の実施形態では、可動コアの大外径部の外周面はガイド筒の大径部の内周面に摺動していないが、摺動部が設けられていない第３の実施形態では、可動コアの大外径部の外周面をガイド筒の大径部の内周面に摺動させてもよい。
この場合は、可動コアの大外径部の外周面に耐摩耗性が高い非磁性めっき膜が施すことが好適である。しかしながら、非磁性めっき膜でなく、耐摩耗性が高い磁性めっき膜を施してもよい。 (H) In the above-described embodiment, the outer peripheral surface of the large outer diameter portion of the movable core does not slide on the inner peripheral surface of the large diameter portion of the guide cylinder, but the sliding portion is not provided. In the embodiment, the outer peripheral surface of the large outer diameter portion of the movable core may be slid on the inner peripheral surface of the large diameter portion of the guide cylinder.
In this case, it is preferable to apply a non-magnetic plating film having high wear resistance to the outer peripheral surface of the large outer diameter portion of the movable core. However, a magnetic plating film having high wear resistance may be applied instead of the nonmagnetic plating film.

（ケ）上述の実施形態では、ガイド筒は、１３〜１７ｗｔ％のクロムを含有しているとした。しかしながら、ガイド筒のクロム含有量はこれに限定されない。   (K) In the above-described embodiment, the guide cylinder contains 13 to 17 wt% chromium. However, the chromium content of the guide tube is not limited to this.

以上、本発明はこのような実施形態に限定されるものではなく、その要旨を逸脱しない範囲で種々の形態で実施可能である。   As mentioned above, this invention is not limited to such embodiment, It can implement with a various form in the range which does not deviate from the summary.

１、２、３ ・・・気体燃料用電磁弁装置（高圧流体用電磁弁装置）、
１５１ ・・・支持部材（シート部材）、
１５５ ・・・弁座、
２０ ・・・ガイド筒、
２０１ ・・・大径部（大内径部）、
２０４ｂ ・・・第２中径部（小内径部）、
２０６ ・・・第１小径部（小内径部、磁気透過部）、
２０７ ・・・第２小径部（小内径部、磁気透過部）、
２０ａ、２０ｂ、２０ｃ・・・段差面、
２１ ・・・磁気遮断部（小内径部）、
２５ ・・・弁体、
３０ ・・・可動コア、
３０１ ・・・小外径部、
３０２、３０４ ・・・大外径部、
３０ａ ・・・段差面、
３５ ・・・固定コア、
４０ ・・・コイルアッセンブリ、
Ｍ１、Ｍ２、Ｍ３ ・・・磁気回路。 1, 2, 3 ... Gas fuel solenoid valve device (high pressure fluid solenoid valve device),
151... Support member (sheet member),
155 ... valve seat,
20 ... guide tube,
201 ... large diameter part (large inner diameter part),
204b ... 2nd inside diameter part (small inside diameter part),
206 ... 1st small diameter part (small internal diameter part, magnetic transmission part),
207 ... 2nd small diameter part (small internal diameter part, magnetic transmission part),
20a, 20b, 20c ... step surface,
21 ... Magnetic shielding part (small inner diameter part),
25 ・ ・ ・ Valve,
30 ... movable core,
301 ... small outer diameter part,
302, 304 ... large outer diameter part,
30a ... step surface,
35 ... fixed core,
40: Coil assembly,
M1, M2, M3 ... Magnetic circuits.

Claims (16)

高圧流体の流れを電磁弁によって遮断または許容する高圧流体用電磁弁装置（１、２、３）であって、
通電により磁力を発生するコイルアッセンブリ（４０）と、
磁性材料で形成され、前記コイルアッセンブリが磁力を発生するとき励磁される固定コア（３５）と、
磁性材料で形成され、前記コイルアッセンブリが磁力を発生するとき前記固定コアに吸引される可動コア（３０）と、
前記可動コアを往復移動可能に収容し、軸方向の所定位置の全周にわたって磁気を遮断する磁気遮断部（２１）および磁気を透過する磁気透過部（２０６、２０７）を形成し、内部を高圧流体で充満可能なガイド筒（２０）と、
前記可動コアに連結する弁体（２５）と、
前記弁体に当接または離間するとき、高圧流体の流れを遮断または許容する弁座（１５５）を形成するシート部材（１５１）と、
を備え、
前記ガイド筒は、前記固定コア側に小内径部（２０４ｂ、２０６、２１、２０７）、および前記固定コアと反対側に前記小内径部の内径より大きい内径の大内径部（２０１）を有し、
前記可動コアは、前記固定コア側に前記ガイド筒の前記小内径部の内周面と摺動する外周面をもつ小外径部（３０１）、および前記固定コアと反対側に前記小外径部の外径より大きく前記大内径部の内径より小さい外径の大外径部（３０２）を有し、
前記可動コアの前記小外径部と前記大外径部との間に形成される第１段差面（３０ａ）は、前記ガイド筒の前記小内径部と前記大内径部との間に形成される第２段差面（２０ａ、２０ｃ）に対向し、前記コイルアッセンブリが磁力を発生するとき、前記第１段差面と前記第２段差面との間に磁気回路（Ｍ３）が形成され、かつ前記ガイド筒の前記磁気透過部（２０７）と前記可動コアの端面（３２）との間に前記磁気遮断部を迂回して磁気回路（Ｍ２）が形成されることを特徴とする高圧流体用電磁弁装置。 A high-pressure fluid electromagnetic valve device (1, 2, 3) for blocking or allowing a flow of high-pressure fluid by a solenoid valve,
A coil assembly (40) that generates a magnetic force when energized;
A fixed core (35) formed of a magnetic material and excited when the coil assembly generates a magnetic force;
A movable core (30) formed of a magnetic material and attracted to the fixed core when the coil assembly generates a magnetic force;
The movable core is accommodated so as to be able to reciprocate, and a magnetic blocking part (21) for blocking magnetism and a magnetic transmission part (206, 207) for transmitting magnetism are formed over the entire circumference in a predetermined position in the axial direction. A guide tube (20) that can be filled with fluid;
A valve body (25) connected to the movable core;
A seat member (151) that forms a valve seat (155) that blocks or allows the flow of high-pressure fluid when contacting or separating from the valve body;
With
The guide tube has a small inner diameter portion (204b, 206, 21, 207) on the fixed core side, and a large inner diameter portion (201) having an inner diameter larger than the inner diameter of the small inner diameter portion on the opposite side to the fixed core. ,
The movable core has a small outer diameter portion (301) having an outer peripheral surface that slides with an inner peripheral surface of the small inner diameter portion of the guide cylinder on the fixed core side, and the small outer diameter on the opposite side to the fixed core. A large outer diameter portion (302) having an outer diameter larger than the outer diameter of the portion and smaller than the inner diameter of the large inner diameter portion,
A first step surface (30a) formed between the small outer diameter portion and the large outer diameter portion of the movable core is formed between the small inner diameter portion and the large inner diameter portion of the guide cylinder. A magnetic circuit (M3) is formed between the first step surface and the second step surface when the coil assembly generates magnetic force, and the second step surface (20a, 20c) A high-pressure fluid electromagnetic valve characterized in that a magnetic circuit (M2) is formed by bypassing the magnetic shielding part between the magnetic transmission part (207) of the guide tube and the end face (32) of the movable core. apparatus. 前記磁気遮断部は、径方向の厚みが前記磁気透過部の径方向の厚みより薄く形成されていることを特徴とする請求項１に記載の高圧流体用電磁弁装置。   2. The electromagnetic valve device for high-pressure fluid according to claim 1, wherein the magnetic blocking portion is formed such that a radial thickness is thinner than a radial thickness of the magnetic transmission portion. 前記可動コアの前記小外径部の外周面は、前記ガイド筒の前記小内径部の内周面と摺動することを特徴とする請求項１または２に記載の高圧流体用電磁弁装置。 The solenoid valve device for high pressure fluid according to claim 1 or 2 , wherein an outer peripheral surface of the small outer diameter portion of the movable core slides with an inner peripheral surface of the small inner diameter portion of the guide cylinder. 前記可動コアは、前記大外径部の前記小外径部と反対側に前記大外径部の外径より小さい外径の中外径部（３０３）を有し、
前記可動コアの前記中外径部の所定の位置の外周面に、前記ガイド筒の前記大内径部の内周面に摺動する非磁性材料から形成される摺動部（３３）が設けられていることを特徴とする請求項１から３のいずれか一項に記載の高圧流体用電磁弁装置。 The movable core has a medium outer diameter portion (303) having an outer diameter smaller than the outer diameter of the large outer diameter portion on the side opposite to the small outer diameter portion of the large outer diameter portion,
A sliding portion (33) formed of a nonmagnetic material that slides on the inner peripheral surface of the large inner diameter portion of the guide cylinder is provided on the outer peripheral surface of the middle outer diameter portion of the movable core at a predetermined position. The high pressure fluid electromagnetic valve device according to any one of claims 1 to 3 , wherein the high pressure fluid electromagnetic valve device is provided. 前記摺動部は、前記可動コアの全周にわたってリング状に設けられていることを特徴とする請求項４に記載の高圧流体用電磁弁装置。 The electromagnetic valve device for high-pressure fluid according to claim 4 , wherein the sliding portion is provided in a ring shape over the entire circumference of the movable core. 前記摺動部は、前記可動コアの全周にわたって所定の間隔をおいて複数に分割されて設けられていることを特徴とする請求項４に記載の高圧流体用電磁弁装置。 5. The electromagnetic valve device for high-pressure fluid according to claim 4 , wherein the sliding portion is divided into a plurality at predetermined intervals over the entire circumference of the movable core. 前記可動コアの前記第１段差面と前記ガイド筒の前記第２段差面とは対向し、前記可動コアが前記ガイド筒内を摺動するとき、前記第１段差面と前記第２段差面とが当接し前記可動コアの軸方向の移動量を規制することを特徴とする請求項１から６のいずれか一項に記載の高圧流体用電磁弁装置。 The first step surface of the movable core and the second step surface of the guide tube face each other, and when the movable core slides in the guide tube, the first step surface and the second step surface The high pressure fluid electromagnetic valve device according to any one of claims 1 to 6 , wherein the electromagnetic valve device is in contact with each other and regulates an amount of movement of the movable core in the axial direction. 前記コイルアッセンブリが磁力を発生し前記可動コアが前記固定コアに吸引されるとき、前記可動コアと前記固定コアとの間に間隙を形成しつつ、前記可動コアの前記第１段差面が前記ガイド筒の前記第２段差面に当接することを特徴とする請求項１から７のいずれか一項に記載の高圧流体用電磁弁装置。 When the coil assembly generates a magnetic force and the movable core is attracted to the fixed core, a gap is formed between the movable core and the fixed core, and the first step surface of the movable core is the guide. The electromagnetic valve device for high-pressure fluid according to any one of claims 1 to 7 , wherein the electromagnetic valve device abuts on the second step surface of the cylinder. 前記可動コアを前記弁座の方向に付勢する付勢部材（３４、３４１）が設けられていることを特徴とする請求項１から８のいずれか一項に記載の高圧流体用電磁弁装置。 The electromagnetic valve device for high-pressure fluid according to any one of claims 1 to 8 , further comprising an urging member (34, 341) for urging the movable core toward the valve seat. . 前記ガイド筒は、前記小内径部（２０４ｂ）と前記大内径部（２０１）との間に、前記小内径部の内径より大きく前記大内径部の内径より小さい内径の中内径部（２０４ａ）を有し、
前記ガイド筒の前記小内径部と前記中内径部との間には、第３段差面（２０ｂ）が形成され、
前記付勢部材（３４）は、前記可動コアの前記第１段差面（３０ａ）と前記ガイド筒の前記第３段差面（２０ｂ）との間に設けられていることを特徴とする請求項９に記載の高圧流体用電磁弁装置。 The guide tube has a medium inner diameter portion (204a) having an inner diameter larger than the inner diameter of the small inner diameter portion and smaller than the inner diameter of the large inner diameter portion between the small inner diameter portion (204b) and the large inner diameter portion (201). Have
A third step surface (20b) is formed between the small inner diameter portion and the middle inner diameter portion of the guide cylinder,
Claim 9, wherein the biasing member (34) is characterized in that provided between the first step surface of said movable core (30a) and the third stepped surface of the guide tube (20b) The electromagnetic valve device for high pressure fluid described in 1. 前記可動コアの前記小外径部の外周面には、耐摩耗めっき膜が施されていることを特徴とする請求項１から１０のいずれか一項に記載の高圧流体用電磁弁装置。 The electromagnetic valve device for high pressure fluid according to any one of claims 1 to 10 , wherein a wear- resistant plating film is provided on an outer peripheral surface of the small outer diameter portion of the movable core. 前記摺動部の外周面には、耐摩耗めっき膜が施されていることを特徴とする請求項４から１１のいずれか一項に記載の高圧流体用電磁弁装置。 The electromagnetic valve device for high-pressure fluid according to any one of claims 4 to 11, wherein an abrasion- resistant plating film is provided on an outer peripheral surface of the sliding portion. 前記耐摩耗めっき膜は、非磁性材料から形成されることを特徴とする請求項１１または１２に記載の高圧流体用電磁弁装置。 The electromagnetic valve device for high-pressure fluid according to claim 11 or 12 , wherein the wear-resistant plating film is made of a nonmagnetic material. 前記可動コアは、磁性ステンレス鋼から形成されることを特徴とする請求項１から１３のいずれか一項に記載の高圧流体用電磁弁装置。 The electromagnetic valve device for high-pressure fluid according to any one of claims 1 to 13 , wherein the movable core is made of magnetic stainless steel. 前記ガイド筒は、クロム含有量１３〜１７ｗｔ％であることを特徴とする請求項１から１４のいずれか一項に記載の高圧流体用電磁弁装置。 The electromagnetic valve device for high-pressure fluid according to any one of claims 1 to 14 , wherein the guide cylinder has a chromium content of 13 to 17 wt%. 通電により磁力を発生するコイルアッセンブリ（４０）と、A coil assembly (40) that generates a magnetic force when energized;
磁性材料で形成され、前記コイルアッセンブリが磁力を発生するとき励磁される固定コア（３５）と、  A fixed core (35) formed of a magnetic material and excited when the coil assembly generates a magnetic force;
磁性材料で形成され、前記コイルアッセンブリが磁力を発生するとき前記固定コアに吸引される可動コア（３０）と、  A movable core (30) formed of a magnetic material and attracted to the fixed core when the coil assembly generates a magnetic force;
前記可動コアを往復移動可能に収容し、軸方向の所定位置の全周にわたって磁気を遮断する磁気遮断部（２１）および磁気を透過する磁気透過部（２０６、２０７）を形成し、内部を高圧流体で充満可能なガイド筒（２０）と、  The movable core is accommodated so as to be able to reciprocate, and a magnetic blocking part (21) for blocking magnetism and a magnetic transmission part (206, 207) for transmitting magnetism are formed over the entire circumference in a predetermined position in the axial direction. A guide tube (20) that can be filled with fluid;
前記可動コアに連結する弁体（２５）と、  A valve body (25) connected to the movable core;
前記弁体に当接または離間するとき、高圧流体の流れを遮断または許容する弁座（１５５）を形成するシート部材（１５１）と、  A seat member (151) that forms a valve seat (155) that blocks or allows the flow of high-pressure fluid when contacting or separating from the valve body;
を備え、  With
前記ガイド筒は、前記固定コア側に小内径部（２０４ｂ、２０６、２１、２０７）、および前記固定コアと反対側に前記小内径部の内径より大きい内径の大内径部（２０１）を有し、  The guide tube has a small inner diameter portion (204b, 206, 21, 207) on the fixed core side, and a large inner diameter portion (201) having an inner diameter larger than the inner diameter of the small inner diameter portion on the opposite side to the fixed core. ,
前記可動コアは、前記固定コア側に前記ガイド筒の前記小内径部の内周面と摺動する外周面をもつ小外径部（３０１）、および前記固定コアと反対側に前記小外径部の外径より大きく前記大内径部の内径より小さい外径の大外径部（３０２）を有し、  The movable core has a small outer diameter portion (301) having an outer peripheral surface that slides with an inner peripheral surface of the small inner diameter portion of the guide cylinder on the fixed core side, and the small outer diameter on the opposite side to the fixed core. A large outer diameter portion (302) having an outer diameter larger than the outer diameter of the portion and smaller than the inner diameter of the large inner diameter portion,
前記可動コアの前記小外径部と前記大外径部との間に形成される第１段差面（３０ａ）は、前記ガイド筒の前記小内径部と前記大内径部との間に形成される第２段差面（２０ａ、２０ｃ）に対向し、前記コイルアッセンブリが磁力を発生するとき、前記第１段差面と前記第２段差面との間に磁気回路（Ｍ３）が形成され、かつ前記ガイド筒の前記磁気透過部（２０７）と前記可動コアの端面（３２）との間に前記磁気遮断部を迂回して磁気回路（Ｍ２）が形成される高圧流体用電磁弁装置の製造方法であって、  A first step surface (30a) formed between the small outer diameter portion and the large outer diameter portion of the movable core is formed between the small inner diameter portion and the large inner diameter portion of the guide cylinder. A magnetic circuit (M3) is formed between the first step surface and the second step surface when the coil assembly generates magnetic force, and the second step surface (20a, 20c) In the method of manufacturing a solenoid valve device for high-pressure fluid, a magnetic circuit (M2) is formed by bypassing the magnetic shielding part between the magnetic transmission part (207) of the guide tube and the end face (32) of the movable core. There,
前記ガイド筒の軸方向の前記所定位置を非磁性材に改質処理し、前記磁気遮断部を形成する改質工程を含む高圧流体用電磁弁装置の製造方法。  A method for manufacturing an electromagnetic valve device for a high-pressure fluid, comprising a reforming step of reforming the predetermined position in the axial direction of the guide cylinder to a nonmagnetic material and forming the magnetic shielding part.
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