JP7087537B2 - Solenoid valve and flow path device - Google Patents

Solenoid valve and flow path device Download PDF

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JP7087537B2
JP7087537B2 JP2018058260A JP2018058260A JP7087537B2 JP 7087537 B2 JP7087537 B2 JP 7087537B2 JP 2018058260 A JP2018058260 A JP 2018058260A JP 2018058260 A JP2018058260 A JP 2018058260A JP 7087537 B2 JP7087537 B2 JP 7087537B2
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flow path
hole
axial direction
tubular member
solenoid valve
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JP2019168091A (en
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大輔 村田
慶多 小林
智宏 安田
建郎 高橋
憲一 尾澤
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Nidec Tosok Corp
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Nidec Tosok Corp
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Description

本発明は、電磁弁、および流路装置に関する。 The present invention relates to a solenoid valve and a flow path device.

流路を開閉する電磁弁が知られる。例えば、特許文献１には、ラッチ式電磁弁が記載される。 Solenoid valves that open and close the flow path are known. For example, Patent Document 1 describes a latch type solenoid valve.

特開２００２－２５０４５７号公報Japanese Patent Application Laid-Open No. 2002-250457

上記のような電磁弁によって流路を閉じた際には、電磁弁の弁体部には流路を流れる流体の圧力が加えられる。そのため、流路の流量が比較的大きい場合には、弁体部を閉じた状態に維持するために比較的大きな力が必要となり、電磁弁が大型化する場合があった。 When the flow path is closed by the solenoid valve as described above, the pressure of the fluid flowing through the flow path is applied to the valve body portion of the solenoid valve. Therefore, when the flow rate of the flow path is relatively large, a relatively large force is required to keep the valve body portion closed, and the solenoid valve may become large in size.

本発明は、上記事情に鑑みて、小型化できる構造を有する電磁弁、およびそのような電磁弁を備える流路装置を提供することを目的の一つとする。 In view of the above circumstances, it is one of the objects of the present invention to provide a solenoid valve having a structure that can be miniaturized and a flow path device provided with such a solenoid valve.

本発明の電磁弁の一つの態様は、軸方向に延びる中心軸に沿って移動可能な可動部を備え、第１流路部と前記第１流路部の軸方向一方側に位置する第２流路部とが第１孔部を介して繋がれる開状態と、前記第１孔部が閉塞されて前記第１流路部と前記第２流路部とが遮断される閉状態と、を切り換え可能な電磁弁であって、前記可動部を軸方向に移動させるソレノイドと前記ソレノイドを収容するカバーとを有する本体部と、前記本体部から軸方向他方側に延びる筒状の筒部材と、を備える。前記可動部は、前記本体部から軸方向他方側に突出し、前記筒部材の内部に挿入されるシャフト部と、前記シャフト部に設けられ、前記閉状態において軸方向一方側から前記第１孔部を閉塞する弁体部と、を有する。前記筒部材の軸方向他方側の端部は、軸方向他方側に開口し、かつ、前記第１孔部が設けられた面と接触する。前記弁体部は、前記筒部材の内部を、第１収容部と前記第１収容部の軸方向他方側に位置する第２収容部とに仕切る。前記筒部材は、前記筒部材を内周面から外周面まで径方向に貫通する貫通孔と、前記閉状態において前記第１流路部と前記第１収容部とを繋ぐ接続流路部と、を有する。前記接続流路部は、前記閉状態において前記第１孔部よりも径方向外側に位置する第２孔部を介して前記第１流路部と繋がる。前記第２収容部には、前記開状態において前記貫通孔を介して前記第２流路部が繋がる。前記第１収容部は、前記第１流路部を流れる流体を収容可能であり、かつ、前記閉状態において前記第２流路部と遮断される。 One aspect of the solenoid valve of the present invention includes a movable portion that can move along a central axis extending in the axial direction, and is located on one side of the first flow path portion and the first flow path portion in the axial direction. An open state in which the flow path portion is connected via the first hole portion and a closed state in which the first hole portion is closed and the first flow path portion and the second flow path portion are blocked. A switchable solenoid valve, a main body portion having a solenoid for moving the movable portion in the axial direction and a cover for accommodating the solenoid, and a tubular tubular member extending from the main body portion to the other side in the axial direction. To prepare for. The movable portion is provided on the shaft portion that protrudes from the main body portion to the other side in the axial direction and is inserted into the inside of the tubular member, and the first hole portion is provided on the shaft portion from one side in the axial direction in the closed state. It has a valve body portion that closes the valve body. The end portion of the tubular member on the other side in the axial direction opens on the other side in the axial direction and comes into contact with the surface provided with the first hole portion. The valve body portion divides the inside of the tubular member into a first accommodating portion and a second accommodating portion located on the other side in the axial direction of the first accommodating portion. The tubular member includes a through hole that penetrates the tubular member in the radial direction from the inner peripheral surface to the outer peripheral surface, and a connecting flow path portion that connects the first flow path portion and the first accommodating portion in the closed state. Have. The connection flow path portion is connected to the first flow path portion via a second hole portion located radially outside the first hole portion in the closed state. The second flow path portion is connected to the second accommodating portion via the through hole in the open state. The first accommodating portion can accommodate the fluid flowing through the first flow path portion, and is shut off from the second flow path portion in the closed state.

本発明の流路装置の一つの態様は、上記の電磁弁と、前記第１流路部と前記第２流路部と前記第１孔部とを有する流路部と、を備える。 One aspect of the flow path device of the present invention includes the above-mentioned solenoid valve, and a flow path portion having the first flow path portion, the second flow path portion, and the first hole portion.

本発明の一つの態様によれば、電磁弁を小型化できる。 According to one aspect of the present invention, the solenoid valve can be miniaturized.

図１は、本実施形態の流路装置が備えられた流路システムを模式的に示す断面図である。FIG. 1 is a cross-sectional view schematically showing a flow path system provided with the flow path device of the present embodiment. 図２は、本実施形態の流路装置が備えられた流路システムを模式的に示す断面図である。FIG. 2 is a cross-sectional view schematically showing a flow path system provided with the flow path device of the present embodiment. 図３は、本実施形態の電磁弁を示す断面図である。FIG. 3 is a cross-sectional view showing the solenoid valve of the present embodiment. 図４は、本実施形態の電磁弁を示す断面図である。FIG. 4 is a cross-sectional view showing the solenoid valve of the present embodiment. 図５は、本実施形態における第１変形例の電磁弁を示す断面図である。FIG. 5 is a cross-sectional view showing the solenoid valve of the first modification in the present embodiment. 図６は、本実施形態における第１変形例の電磁弁を示す断面図である。FIG. 6 is a cross-sectional view showing the solenoid valve of the first modification in the present embodiment. 図７は、本実施形態における第２変形例の電磁弁を示す断面図である。FIG. 7 is a cross-sectional view showing the solenoid valve of the second modification in the present embodiment. 図８は、本実施形態における第２変形例の電磁弁を示す断面図である。FIG. 8 is a cross-sectional view showing the solenoid valve of the second modification in the present embodiment.

各図においてＺ軸方向は、正の側を上側とし、負の側を下側とする上下方向である。各図に適宜示す仮想軸である中心軸Ｊの軸方向は、Ｚ軸方向、すなわち上下方向と平行である。以下の説明においては、中心軸Ｊの軸方向と平行な方向を単に「軸方向」と呼び、中心軸Ｊを中心とする径方向を単に「径方向」と呼び、中心軸Ｊを中心とする周方向を単に「周方向」と呼ぶ。 In each figure, the Z-axis direction is a vertical direction with the positive side as the upper side and the negative side as the lower side. The axial direction of the central axis J, which is a virtual axis appropriately shown in each figure, is parallel to the Z-axis direction, that is, the vertical direction. In the following description, the direction parallel to the axial direction of the central axis J is simply referred to as "axial direction", the radial direction centered on the central axis J is simply referred to as "diametrical direction", and the central axis J is centered. The circumferential direction is simply called the "circumferential direction".

本実施形態において、上側は、軸方向一方側に相当し、下側は、軸方向他方側に相当する。なお、上下方向、上側および下側とは、単に各部の相対位置関係を説明するための名称であり、実際の配置関係等は、これらの名称で示される配置関係等以外の配置関係等であってもよい。 In the present embodiment, the upper side corresponds to one side in the axial direction, and the lower side corresponds to the other side in the axial direction. It should be noted that the vertical direction, the upper side, and the lower side are simply names for explaining the relative positional relationship of each part, and the actual arrangement relationship, etc. is an arrangement relationship other than the arrangement relationship, etc. indicated by these names. You may.

図１および図２に示すように、本実施形態の流路装置１０は、流体Ｗが流れる流路部２０と、流路部２０を開閉する電磁弁３０と、を備える。流体Ｗは、特に限定されず、例えば、水である。図１においては、電磁弁３０が開き、流路部２０内を流体Ｗが流れる開状態ＯＳを示す。図２においては、電磁弁３０が閉じ、流路部２０内の流体Ｗの流れが堰き止められた閉状態ＣＳを示す。電磁弁３０は、開状態ＯＳと、閉状態ＣＳと、を切り換え可能である。 As shown in FIGS. 1 and 2, the flow path device 10 of the present embodiment includes a flow path portion 20 through which the fluid W flows, and a solenoid valve 30 for opening and closing the flow path portion 20. The fluid W is not particularly limited, and is, for example, water. FIG. 1 shows an open state OS in which the solenoid valve 30 is opened and the fluid W flows in the flow path portion 20. FIG. 2 shows a closed state CS in which the solenoid valve 30 is closed and the flow of the fluid W in the flow path portion 20 is blocked. The solenoid valve 30 can switch between an open state OS and a closed state CS.

本実施形態の流路装置１０は、流路システム１に備えられる。流路システム１は、被冷却体５を冷却する冷却システムである。流路システム１は、例えば、車両に搭載される。被冷却体５は、例えば、車両の駆動部である。 The flow path device 10 of the present embodiment is provided in the flow path system 1. The flow path system 1 is a cooling system that cools the object to be cooled 5. The flow path system 1 is mounted on a vehicle, for example. The cooled body 5 is, for example, a driving unit of a vehicle.

流路システム１は、ポンプ部２と、流体冷却部３と、流体タンク４と、被冷却体５と、流路装置１０と、を備える。ポンプ部２は、流体タンク４内の流体Ｗを被冷却体５に送る。流体冷却部３は、流路部２０内の流体Ｗを冷却する。流体冷却部３は、流路部２０のうちポンプ部２と被冷却体５との間の部分に設けられる。 The flow path system 1 includes a pump unit 2, a fluid cooling unit 3, a fluid tank 4, a cooled body 5, and a flow path device 10. The pump unit 2 sends the fluid W in the fluid tank 4 to the cooled body 5. The fluid cooling unit 3 cools the fluid W in the flow path unit 20. The fluid cooling unit 3 is provided in a portion of the flow path portion 20 between the pump portion 2 and the cooled body 5.

流路部２０は、第１流路部２１と、第２流路部２２と、流入部２３と、流出部２４と、を有する。流入部２３は、流体タンク４からポンプ部２まで延びる流路である。流出部２４は、被冷却体５から流体タンク４まで延びる流路である。第１流路部２１は、ポンプ部２から延びる流路である。第１流路部２１には、ポンプ部２によって送られる流体Ｗが流入する。本実施形態において第１流路部２１には、流体冷却部３が設けられる。 The flow path portion 20 includes a first flow path section 21, a second flow path section 22, an inflow section 23, and an outflow section 24. The inflow section 23 is a flow path extending from the fluid tank 4 to the pump section 2. The outflow portion 24 is a flow path extending from the cooled body 5 to the fluid tank 4. The first flow path portion 21 is a flow path extending from the pump section 2. The fluid W sent by the pump unit 2 flows into the first flow path unit 21. In the present embodiment, the first flow path portion 21 is provided with a fluid cooling portion 3.

第２流路部２２は、第１流路部２１から被冷却体５まで延びる流路である。第２流路部２２は、第１流路部２１の上側に位置する。第１流路部２１と第２流路部２２とは、仕切壁部２７によって軸方向に仕切られる。仕切壁部２７は、軸方向と直交する方向に延びる壁であり、第１流路部２１の上側の壁部の一部と第２流路部２２の下側の壁部の一部とを構成する。仕切壁部２７は、仕切壁部２７を軸方向に貫通する第１孔部２５を有する。すなわち、流路部２０は、第１孔部２５を有する。図示は省略するが、第１孔部２５は、例えば、円形の孔である。図１に示す開状態ＯＳにおいては、第１流路部２１と第２流路部２２とは、第１孔部２５を介して繋がれる。 The second flow path portion 22 is a flow path extending from the first flow path portion 21 to the cooled body 5. The second flow path portion 22 is located above the first flow path portion 21. The first flow path portion 21 and the second flow path portion 22 are axially partitioned by the partition wall portion 27. The partition wall portion 27 is a wall extending in a direction orthogonal to the axial direction, and a part of the upper wall portion of the first flow path portion 21 and a part of the lower wall portion of the second flow path portion 22 are formed. Configure. The partition wall portion 27 has a first hole portion 25 that penetrates the partition wall portion 27 in the axial direction. That is, the flow path portion 20 has the first hole portion 25. Although not shown, the first hole 25 is, for example, a circular hole. In the open state OS shown in FIG. 1, the first flow path portion 21 and the second flow path portion 22 are connected via the first hole portion 25.

第２流路部２２は、電磁弁３０が取り付けられる取付孔２６を有する。取付孔２６は、第２流路部２２の壁部のうち上側の上壁部２８に設けられる。取付孔２６は、上壁部２８を軸方向に貫通する。取付孔２６は、第１孔部２５の上側に位置する。図示は省略するが、取付孔２６は、例えば、円形の孔である。取付孔２６の内径は、第１孔部２５の内径よりも大きい。 The second flow path portion 22 has a mounting hole 26 to which the solenoid valve 30 is mounted. The mounting hole 26 is provided in the upper wall portion 28 of the wall portion of the second flow path portion 22. The mounting hole 26 penetrates the upper wall portion 28 in the axial direction. The mounting hole 26 is located above the first hole portion 25. Although not shown, the mounting hole 26 is, for example, a circular hole. The inner diameter of the mounting hole 26 is larger than the inner diameter of the first hole portion 25.

なお、本明細書において「第２流路部が第１流路部の上側に位置する」とは、第２流路部のうち第１流路部と孔部を介して繋がる部分が、第１流路部のうち第２流路部と孔部を介して繋がる部分の上側に位置すればよい。すなわち、本明細書において「第２流路部が第１流路部の上側に位置する」とは、第２流路部の一部が第１流路部の下側に位置するような場合も含む。 In the present specification, "the second flow path portion is located above the first flow path portion" means that the portion of the second flow path portion that is connected to the first flow path portion via the hole portion is the first. It may be located above the portion of the one flow path portion that is connected to the second flow path portion via the hole portion. That is, in the present specification, "the second flow path portion is located above the first flow path portion" means that a part of the second flow path portion is located below the first flow path portion. Also includes.

第２流路部２２は、弁収容部２２ａを有する。弁収容部２２ａは、第２流路部２２における第１流路部２１が繋がる側の端部である。弁収容部２２ａは、第１流路部２１の上側に位置する。弁収容部２２ａは、第１孔部２５と繋がる。弁収容部２２ａの上側の端部は、取付孔２６に繋がる。図示は省略するが、弁収容部２２ａは、軸方向に沿って視て、円形状である。 The second flow path portion 22 has a valve accommodating portion 22a. The valve accommodating portion 22a is an end portion of the second flow path portion 22 on the side to which the first flow path portion 21 is connected. The valve accommodating portion 22a is located above the first flow path portion 21. The valve accommodating portion 22a is connected to the first hole portion 25. The upper end of the valve accommodating portion 22a is connected to the mounting hole 26. Although not shown, the valve accommodating portion 22a has a circular shape when viewed along the axial direction.

図１に示すように、開状態ＯＳにおいて、流体タンク４内の流体Ｗは、ポンプ部２によって、流入部２３を介して第１流路部２１に流入される。第１流路部２１に流入した流体Ｗは、第１孔部２５を介して、第２流路部２２に流入する。第２流路部２２に流入した流体Ｗは、被冷却体５を冷却し、流出部２４を介して、流体タンク４に戻る。このように、開状態ＯＳにおいては、流体タンク４と流路部２０との間で流体Ｗが循環し、被冷却体５を流体Ｗによって冷却することができる。 As shown in FIG. 1, in the open state OS, the fluid W in the fluid tank 4 is flowed into the first flow path portion 21 by the pump portion 2 via the inflow portion 23. The fluid W that has flowed into the first flow path portion 21 flows into the second flow path portion 22 via the first hole portion 25. The fluid W flowing into the second flow path portion 22 cools the object to be cooled 5, and returns to the fluid tank 4 via the outflow portion 24. As described above, in the open state OS, the fluid W circulates between the fluid tank 4 and the flow path portion 20, and the cooled body 5 can be cooled by the fluid W.

一方、図２に示すように、閉状態ＣＳにおいては、電磁弁３０によって第１孔部２５が閉塞されて第１流路部２１と第２流路部２２とが遮断される。これにより、第２流路部２２に流体Ｗが流れなくなり、被冷却体５の冷却が停止される。 On the other hand, as shown in FIG. 2, in the closed state CS, the first hole portion 25 is closed by the solenoid valve 30, and the first flow path portion 21 and the second flow path portion 22 are cut off. As a result, the fluid W does not flow in the second flow path portion 22, and the cooling of the cooled body 5 is stopped.

電磁弁３０は、流路部２０に固定される。より詳細には、電磁弁３０は、取付孔２６を介して弁収容部２２ａに取り付けられ、第２流路部２２の上壁部２８に固定される。図３および図４に示すように、電磁弁３０は、本体部４０と、可動部５０と、筒部材６０と、弾性部材８０と、シール部材６３ｂ，６３ｃと、を備える。なお、図３は、開状態ＯＳを示し、図４は、閉状態ＣＳを示す。 The solenoid valve 30 is fixed to the flow path portion 20. More specifically, the solenoid valve 30 is attached to the valve accommodating portion 22a via the mounting hole 26 and fixed to the upper wall portion 28 of the second flow path portion 22. As shown in FIGS. 3 and 4, the solenoid valve 30 includes a main body portion 40, a movable portion 50, a tubular member 60, an elastic member 80, and seal members 63b and 63c. Note that FIG. 3 shows an OS in an open state, and FIG. 4 shows a CS in a closed state.

本体部４０は、カバー４１と、ソレノイド４２と、第１磁性部材４４ａと、第２磁性部材４４ｂと、スペーサ４５と、ブッシュ４６ａ，４６ｂと、Ｏリング４７ａ，４７ｂと、を有する。カバー４１は、ソレノイド４２を収容する。カバー４１は、磁性材である。カバー４１は、上壁部２８に固定される。カバー４１は、第１カバー４１ａと、第２カバー４１ｂと、を有する。 The main body 40 has a cover 41, a solenoid 42, a first magnetic member 44a, a second magnetic member 44b, a spacer 45, bushes 46a and 46b, and O-rings 47a and 47b. The cover 41 accommodates the solenoid 42. The cover 41 is a magnetic material. The cover 41 is fixed to the upper wall portion 28. The cover 41 has a first cover 41a and a second cover 41b.

第１カバー４１ａは、カバー本体４１ｃと、円環板部４１ｄと、保持部４１ｅと、を有する。カバー本体４１ｃは、下側に開口する有蓋の筒状である。本実施形態においてカバー本体４１ｃは、中心軸Ｊを中心とする円筒状である。円環板部４１ｄは、カバー本体４１ｃの下側の端部から径方向外側に拡がる。保持部４１ｅは、円環板部４１ｄの径方向外縁部から下側に突出する筒状である。 The first cover 41a has a cover main body 41c, a ring plate portion 41d, and a holding portion 41e. The cover body 41c has a tubular shape with a lid that opens downward. In the present embodiment, the cover main body 41c has a cylindrical shape centered on the central axis J. The annular plate portion 41d extends radially outward from the lower end of the cover body 41c. The holding portion 41e has a cylindrical shape that protrudes downward from the radial outer edge portion of the annular plate portion 41d.

第２カバー４１ｂは、板面が軸方向を向く板状である。図示は省略するが、本実施形態において第２カバー４１ｂは、中心軸Ｊを中心とする円板状である。第２カバー４１ｂは、保持部４１ｅの径方向内側に嵌め合わされる。第２カバー４１ｂは、第１カバー４１ａの下側の開口を閉じる。第２カバー４１ｂは、第２カバー４１ｂの中央部を軸方向に貫通するカバー貫通孔４１ｆを有する。 The second cover 41b has a plate shape in which the plate surface faces the axial direction. Although not shown, the second cover 41b in the present embodiment has a disk shape centered on the central axis J. The second cover 41b is fitted to the inside of the holding portion 41e in the radial direction. The second cover 41b closes the lower opening of the first cover 41a. The second cover 41b has a cover through hole 41f that axially penetrates the central portion of the second cover 41b.

ソレノイド４２は、ボビン部４２ａと、コイル４３と、モールド部４２ｂと、を有する。ボビン部４２ａは、軸方向に延び、軸方向両側に開口する筒状である。本実施形態においてボビン部４２ａは、中心軸Ｊを中心とする円筒状である。ボビン部４２ａの下側の端部は、第２カバー４１ｂと接触する。ボビン部４２ａの上側の端部は、第１カバー４１ａの上側の蓋部と接触する。コイル４３は、ボビン部４２ａの外周面に巻き回される。モールド部４２ｂは、ボビン部４２ａの径方向外側およびコイル４３の径方向外側を覆う。 The solenoid 42 has a bobbin portion 42a, a coil 43, and a mold portion 42b. The bobbin portion 42a has a cylindrical shape that extends in the axial direction and opens on both sides in the axial direction. In the present embodiment, the bobbin portion 42a has a cylindrical shape centered on the central axis J. The lower end of the bobbin portion 42a comes into contact with the second cover 41b. The upper end of the bobbin portion 42a comes into contact with the upper lid portion of the first cover 41a. The coil 43 is wound around the outer peripheral surface of the bobbin portion 42a. The mold portion 42b covers the radial outside of the bobbin portion 42a and the radial outside of the coil 43.

第１磁性部材４４ａおよび第２磁性部材４４ｂは、軸方向に延び、軸方向両側に開口する筒状である。本実施形態において第１磁性部材４４ａおよび第２磁性部材４４ｂは、中心軸Ｊを中心とする円筒状である。第１磁性部材４４ａおよび第２磁性部材４４ｂは、ボビン部４２ａの径方向内側に嵌め合わされる。第１磁性部材４４ａの下側の端部は、第２カバー４１ｂと接触する。第２磁性部材４４ｂは、第１磁性部材４４ａの上側に位置する。第２磁性部材４４ｂの上側の端部は、第１カバー４１ａの上側の蓋部と接触する。第１磁性部材４４ａおよび第２磁性部材４４ｂは、磁性材である。 The first magnetic member 44a and the second magnetic member 44b have a cylindrical shape that extends in the axial direction and opens on both sides in the axial direction. In the present embodiment, the first magnetic member 44a and the second magnetic member 44b have a cylindrical shape centered on the central axis J. The first magnetic member 44a and the second magnetic member 44b are fitted to the inside of the bobbin portion 42a in the radial direction. The lower end of the first magnetic member 44a comes into contact with the second cover 41b. The second magnetic member 44b is located above the first magnetic member 44a. The upper end of the second magnetic member 44b comes into contact with the upper lid of the first cover 41a. The first magnetic member 44a and the second magnetic member 44b are magnetic materials.

スペーサ４５は、軸方向に延び、軸方向両側に開口する筒状である。本実施形態においてスペーサ４５は、中心軸Ｊを中心とする円筒状である。スペーサ４５は、第１磁性部材４４ａと第２磁性部材４４ｂとの軸方向の間に位置する。スペーサ４５の軸方向両端部は、各磁性部材と接触する。スペーサ４５は、非磁性材である。スペーサ４５は、例えば、樹脂から成る。 The spacer 45 has a cylindrical shape that extends in the axial direction and opens on both sides in the axial direction. In the present embodiment, the spacer 45 has a cylindrical shape centered on the central axis J. The spacer 45 is located between the first magnetic member 44a and the second magnetic member 44b in the axial direction. Both ends of the spacer 45 in the axial direction come into contact with each magnetic member. The spacer 45 is a non-magnetic material. The spacer 45 is made of, for example, a resin.

ブッシュ４６ａ，４６ｂは、軸方向に延び、軸方向両側に開口する筒状である。本実施形態においてブッシュ４６ａ，４６ｂは、中心軸Ｊを中心とする円筒状である。ブッシュ４６ａの下側の端部は、カバー貫通孔４１ｆに嵌め合わされる。ブッシュ４６ａの上側の部分は、第１磁性部材４４ａの径方向内側に嵌め合わされる。ブッシュ４６ｂは、第２磁性部材４４ｂの径方向内側に嵌め合わされる。 The bushes 46a and 46b have a cylindrical shape that extends in the axial direction and opens on both sides in the axial direction. In the present embodiment, the bushes 46a and 46b have a cylindrical shape centered on the central axis J. The lower end of the bush 46a is fitted into the cover through hole 41f. The upper portion of the bush 46a is fitted to the inside of the first magnetic member 44a in the radial direction. The bush 46b is fitted to the inside of the second magnetic member 44b in the radial direction.

Ｏリング４７ａ，４７ｂは、周方向に沿った環状である。本実施形態においてＯリング４７ａ，４７ｂは、中心軸Ｊを中心とする円環状である。Ｏリング４７ａは、ボビン部４２ａの上側の端部と第１カバー４１ａの上側の蓋部との間に位置する。Ｏリング４７ａは、ボビン部４２ａと第１カバー４１ａとに接触して、ボビン部４２ａと第１カバー４１ａとの間を封止する。Ｏリング４７ｂは、ボビン部４２ａの下側の端部と第２カバー４１ｂとの間に位置する。Ｏリング４７ｂは、ボビン部４２ａと第２カバー４１ｂとに接触して、ボビン部４２ａと第２カバー４１ｂとの間を封止する。 The O-rings 47a and 47b are annular along the circumferential direction. In the present embodiment, the O-rings 47a and 47b are annular with the central axis J as the center. The O-ring 47a is located between the upper end of the bobbin portion 42a and the upper lid portion of the first cover 41a. The O-ring 47a comes into contact with the bobbin portion 42a and the first cover 41a, and seals between the bobbin portion 42a and the first cover 41a. The O-ring 47b is located between the lower end of the bobbin portion 42a and the second cover 41b. The O-ring 47b contacts the bobbin portion 42a and the second cover 41b and seals between the bobbin portion 42a and the second cover 41b.

可動部５０は、軸方向に延びる中心軸Ｊに沿って移動可能である。可動部５０は、シャフト部５１と、弁体部５２と、コア部５３と、を有する。シャフト部５１は、中心軸Ｊに沿って延びる。シャフト部５１は、中心軸Ｊを中心とする円柱状である。シャフト部５１の上側の部分は、本体部４０の内部に挿入される。シャフト部５１は、本体部４０から下側に突出し、筒部材６０の内部に挿入される。シャフト部５１は、ブッシュ４６ａの径方向内側に嵌め合わされ、ブッシュ４６ａによって軸方向に移動可能に支持される。 The movable portion 50 can move along the central axis J extending in the axial direction. The movable portion 50 includes a shaft portion 51, a valve body portion 52, and a core portion 53. The shaft portion 51 extends along the central axis J. The shaft portion 51 is a columnar shape centered on the central axis J. The upper portion of the shaft portion 51 is inserted inside the main body portion 40. The shaft portion 51 projects downward from the main body portion 40 and is inserted into the inside of the tubular member 60. The shaft portion 51 is fitted to the inside of the bush 46a in the radial direction, and is supported by the bush 46a so as to be movable in the axial direction.

弁体部５２は、シャフト部５１に設けられる。より詳細には、弁体部５２は、シャフト部５１の下側の端部に繋がる。本実施形態において弁体部５２は、例えば、中心軸Ｊを中心とする円柱状である。弁体部５２の外径は、シャフト部５１の外径および第１孔部２５の内径よりも大きい。弁体部５２の外径は、筒部材６０の内径とほぼ同じである。 The valve body portion 52 is provided on the shaft portion 51. More specifically, the valve body portion 52 is connected to the lower end portion of the shaft portion 51. In the present embodiment, the valve body portion 52 is, for example, a columnar shape centered on the central axis J. The outer diameter of the valve body portion 52 is larger than the outer diameter of the shaft portion 51 and the inner diameter of the first hole portion 25. The outer diameter of the valve body portion 52 is substantially the same as the inner diameter of the tubular member 60.

弁体部５２は、筒部材６０の内部に位置する。弁体部５２は、筒部材６０の内部に嵌め合わされる。弁体部５２の外周面は、筒部材６０の内周面と接触する。可動部５０が軸方向に移動する際、弁体部５２は、外周面が筒部材６０の内周面に対して滑りながら、軸方向に移動する。本実施形態において弁体部５２とシャフト部５１とは、例えば、同一の単一部材の一部である。 The valve body portion 52 is located inside the tubular member 60. The valve body portion 52 is fitted inside the tubular member 60. The outer peripheral surface of the valve body portion 52 comes into contact with the inner peripheral surface of the tubular member 60. When the movable portion 50 moves in the axial direction, the valve body portion 52 moves in the axial direction while the outer peripheral surface slides with respect to the inner peripheral surface of the tubular member 60. In the present embodiment, the valve body portion 52 and the shaft portion 51 are, for example, a part of the same single member.

弁体部５２の上側の面は、径方向外側に向かうに従って下側に位置する湾曲面である。弁体部５２の上側の面は、第１受圧面５２ａである。弁体部５２の下側の面は、径方向外側に向かうに従って上側に位置する湾曲面である。弁体部５２の下側の面は、第２受圧面５２ｂを含む。第２受圧面５２ｂは、閉状態ＣＳにおいて第１孔部２５を介して第１流路部２１に露出する部分である。本実施形態において第２受圧面５２ｂは、弁体部５２の下側の面のうちの中央部分である。第２受圧面５２ｂの面積は、第１受圧面５２ａの面積よりも小さい。 The upper surface of the valve body portion 52 is a curved surface located on the lower side toward the outer side in the radial direction. The upper surface of the valve body portion 52 is the first pressure receiving surface 52a. The lower surface of the valve body portion 52 is a curved surface located on the upper side toward the outer side in the radial direction. The lower surface of the valve body portion 52 includes a second pressure receiving surface 52b. The second pressure receiving surface 52b is a portion exposed to the first flow path portion 21 via the first hole portion 25 in the closed state CS. In the present embodiment, the second pressure receiving surface 52b is the central portion of the lower surface of the valve body portion 52. The area of the second pressure receiving surface 52b is smaller than the area of the first pressure receiving surface 52a.

図４に示すように、弁体部５２は、閉状態ＣＳにおいて上側から第１孔部２５を閉塞する。閉状態ＣＳにおいて、弁体部５２の下側の面は、仕切壁部２７の上側の面のうち第１孔部２５の縁部と接触する。第２受圧面５２ｂは、閉状態ＣＳにおいて、第１流路部２１内の流体Ｗから上側向きの圧力を受ける。 As shown in FIG. 4, the valve body portion 52 closes the first hole portion 25 from above in the closed state CS. In the closed state CS, the lower surface of the valve body portion 52 comes into contact with the edge portion of the first hole portion 25 of the upper surfaces of the partition wall portion 27. The second pressure receiving surface 52b receives upward pressure from the fluid W in the first flow path portion 21 in the closed state CS.

コア部５３は、軸方向に延びる。本実施形態においてコア部５３は、中心軸Ｊを中心とする円筒状である。コア部５３は、シャフト部５１の外周面に嵌め合わされて固定される。コア部５３は、ブッシュ４６ｂの径方向内側に嵌め合わされ、ブッシュ４６ｂによって軸方向に移動可能に支持される。コア部５３は、磁性材である。 The core portion 53 extends in the axial direction. In the present embodiment, the core portion 53 has a cylindrical shape centered on the central axis J. The core portion 53 is fitted and fixed to the outer peripheral surface of the shaft portion 51. The core portion 53 is fitted to the inside of the bush 46b in the radial direction and is supported by the bush 46b so as to be movable in the axial direction. The core portion 53 is a magnetic material.

弾性部材８０は、第１磁性部材４４ａとコア部５３との軸方向の間に位置する。本実施形態において弾性部材８０は、軸方向に延びるコイルスプリングである。弾性部材８０の上側の端部は、コア部５３に接触する。弾性部材８０の下側の端部は、第１磁性部材４４ａと接触する。弾性部材８０は、コア部５３を介して、可動部５０に上側向きの弾性力Ｆｓを加える。 The elastic member 80 is located between the first magnetic member 44a and the core portion 53 in the axial direction. In the present embodiment, the elastic member 80 is a coil spring extending in the axial direction. The upper end of the elastic member 80 comes into contact with the core 53. The lower end of the elastic member 80 comes into contact with the first magnetic member 44a. The elastic member 80 applies an upward elastic force Fs to the movable portion 50 via the core portion 53.

図３に示す開状態ＯＳからソレノイド４２のコイル４３に電流を供給すると、コイル４３の径方向内側に上側から下側に向かう磁界が生じる。これにより、磁束が、第２磁性部材４４ｂ、コア部５３、第１磁性部材４４ａ、第２カバー４１ｂ、カバー本体４１ｃを順に通り、カバー本体４１ｃの上側の蓋部から第２磁性部材４４ｂに戻る磁気回路が生じる。この磁気回路によって、コア部５３は、下側向きの電磁力Ｆｍを受ける。そのため、コア部５３が下側に移動し、シャフト部５１および弁体部５２も下側に移動する。このようにして、ソレノイド４２は、可動部５０を軸方向に移動させることができる。図４に示すように、可動部５０が下側に移動することで、弁体部５２が第１孔部２５を閉塞し、開状態ＯＳから閉状態ＣＳへと切り換えられる。 When a current is supplied to the coil 43 of the solenoid 42 from the open state OS shown in FIG. 3, a magnetic field from the upper side to the lower side is generated inside the coil 43 in the radial direction. As a result, the magnetic flux passes through the second magnetic member 44b, the core portion 53, the first magnetic member 44a, the second cover 41b, and the cover main body 41c in this order, and returns from the upper lid portion of the cover main body 41c to the second magnetic member 44b. A magnetic circuit is created. By this magnetic circuit, the core portion 53 receives a downward electromagnetic force Fm. Therefore, the core portion 53 moves downward, and the shaft portion 51 and the valve body portion 52 also move downward. In this way, the solenoid 42 can move the movable portion 50 in the axial direction. As shown in FIG. 4, when the movable portion 50 moves downward, the valve body portion 52 closes the first hole portion 25 and is switched from the open state OS to the closed state CS.

一方、閉状態ＣＳにおいて、ソレノイド４２のコイル４３への電流供給を停止すると、上述した磁気回路が消失し、コア部５３に生じた電磁力Ｆｍも消失する。これにより、弁体部５２が第１流路部２１内の流体Ｗから受ける上側向きの流体力Ｆｗ２と、コア部５３が弾性部材８０から受ける上側向きの弾性力Ｆｓとによって、可動部５０が上側に移動し、第１孔部２５が開放される。したがって、閉状態ＣＳから開状態ＯＳへと切り換えられる。 On the other hand, when the current supply to the coil 43 of the solenoid 42 is stopped in the closed state CS, the above-mentioned magnetic circuit disappears, and the electromagnetic force Fm generated in the core portion 53 also disappears. As a result, the movable portion 50 is formed by the upward fluid force Fw2 received by the valve body portion 52 from the fluid W in the first flow path portion 21 and the upward elastic force Fs received by the core portion 53 from the elastic member 80. It moves upward and the first hole 25 is opened. Therefore, the closed state CS is switched to the open state OS.

以上のように、電磁弁３０は、ソレノイド４２のコイル４３への電流の供給と停止とを切り換えることで、第１孔部２５を開閉し、開状態ＯＳと閉状態ＣＳとを切り換えることができる。 As described above, the solenoid valve 30 can open and close the first hole 25 and switch between the open state OS and the closed state CS by switching between supplying and stopping the current to the coil 43 of the solenoid 42. ..

筒部材６０は、本体部４０から下側に延びる筒状である。本実施形態において筒部材６０は、中心軸Ｊを中心とし、軸方向両側に開口する円筒状である。筒部材６０は、本体部４０の下側に固定される。筒部材６０は、取付孔２６を介して第２流路部２２の内部に挿入される。より詳細には、筒部材６０は、第２流路部２２に設けられた弁収容部２２ａに嵌め合わされる。筒部材６０は、第２流路部２２に固定される。本実施形態において筒部材６０は、単一の部材である。 The cylindrical member 60 has a cylindrical shape extending downward from the main body 40. In the present embodiment, the tubular member 60 has a cylindrical shape centered on the central axis J and opens on both sides in the axial direction. The tubular member 60 is fixed to the lower side of the main body 40. The tubular member 60 is inserted into the second flow path portion 22 via the mounting hole 26. More specifically, the tubular member 60 is fitted into the valve accommodating portion 22a provided in the second flow path portion 22. The tubular member 60 is fixed to the second flow path portion 22. In the present embodiment, the tubular member 60 is a single member.

筒部材６０は、筒部材本体６０ａと、突出部６０ｂと、を有する。筒部材本体６０ａは、軸方向に延びる円筒状の部分である。筒部材本体６０ａは、弁収容部２２ａに嵌め合わされる。筒部材本体６０ａの上側の端部は、第２カバー４１ｂの下側の面のうち径方向外縁部と接触して固定される。これにより、筒部材本体６０ａの上側の端部は、本体部４０に固定される。筒部材本体６０ａの上側の端部と第２カバー４１ｂの下側の面との間には、Ｏリング６４が設けられる。Ｏリング６４は、周方向に沿った環状である。Ｏリング６４によって、筒部材本体６０ａの上側の端部と第２カバー４１ｂの下側の面との間が封止される。 The tubular member 60 has a tubular member main body 60a and a protruding portion 60b. The tubular member main body 60a is a cylindrical portion extending in the axial direction. The tubular member main body 60a is fitted to the valve accommodating portion 22a. The upper end portion of the tubular member main body 60a is fixed in contact with the radial outer edge portion of the lower surface of the second cover 41b. As a result, the upper end of the tubular member main body 60a is fixed to the main body 40. An O-ring 64 is provided between the upper end of the tubular member body 60a and the lower surface of the second cover 41b. The O-ring 64 is an annular shape along the circumferential direction. The O-ring 64 seals between the upper end of the tubular member body 60a and the lower surface of the second cover 41b.

筒部材本体６０ａの下側の端部は、下側に開口し、仕切壁部２７の上側の面と接触する。すなわち、筒部材６０の下側の端部は、下側に開口し、かつ、第１孔部２５が設けられた面と接触する。筒部材本体６０ａは、第１孔部２５よりも径方向外側に位置する。筒部材本体６０ａは、軸方向に沿って視て、第１孔部２５を囲む。 The lower end of the tubular member body 60a opens downward and comes into contact with the upper surface of the partition wall portion 27. That is, the lower end of the tubular member 60 opens downward and comes into contact with the surface provided with the first hole 25. The tubular member main body 60a is located radially outside the first hole portion 25. The tubular member main body 60a surrounds the first hole portion 25 when viewed along the axial direction.

筒部材本体６０ａは、筒部材本体６０ａの外周面から径方向内側に窪む溝部６０ｃを有する。溝部６０ｃは、周方向に沿った円環状である。溝部６０ｃは、筒部材本体６０ａの外周面のうち取付孔２６に嵌め合わされる部分に設けられる。溝部６０ｃには、Ｏリング６３が嵌め込まれる。Ｏリング６３ａは、溝部６０ｃの溝底面と取付孔２６の内周面とに接触する。Ｏリング６３ａは、筒部材本体６０ａの外周面と取付孔２６の内周面との間を封止する。これにより、第２流路部２２内の流体Ｗが取付孔２６から外部に漏れることを抑制できる。 The tubular member main body 60a has a groove portion 60c that is recessed inward in the radial direction from the outer peripheral surface of the tubular member main body 60a. The groove portion 60c is an annular shape along the circumferential direction. The groove portion 60c is provided in a portion of the outer peripheral surface of the tubular member main body 60a that is fitted into the mounting hole 26. An O-ring 63 is fitted in the groove portion 60c. The O-ring 63a comes into contact with the bottom surface of the groove 60c and the inner peripheral surface of the mounting hole 26. The O-ring 63a seals between the outer peripheral surface of the tubular member main body 60a and the inner peripheral surface of the mounting hole 26. As a result, it is possible to prevent the fluid W in the second flow path portion 22 from leaking to the outside from the mounting hole 26.

筒部材本体６０ａは、筒部材本体６０ａの壁部を径方向に貫通する貫通孔６０ｄを有する。すなわち、筒部材６０は、筒部材６０を内周面から外周面まで径方向に貫通する貫通孔６０ｄを有する。貫通孔６０ｄは、筒部材本体６０ａの下側の部分に設けられる。図３に示すように、貫通孔６０ｄは、開状態ＯＳにおいて後述する第２収容部９２と第２流路部２２とを繋ぐ。これにより、開状態ＯＳにおいて、第１流路部２１内を流れる流体Ｗは、第１孔部２５から第２収容部９２に流入し、貫通孔６０ｄを介して第２流路部２２へと流れる。また、図４に示すように、貫通孔６０ｄは、閉状態ＣＳにおいて、弁体部５２の外周面によって閉塞される。 The tubular member main body 60a has a through hole 60d that penetrates the wall portion of the tubular member main body 60a in the radial direction. That is, the tubular member 60 has a through hole 60d that penetrates the tubular member 60 in the radial direction from the inner peripheral surface to the outer peripheral surface. The through hole 60d is provided in a lower portion of the tubular member main body 60a. As shown in FIG. 3, the through hole 60d connects the second accommodating portion 92 and the second flow path portion 22, which will be described later, in the open state OS. As a result, in the open state OS, the fluid W flowing in the first flow path portion 21 flows from the first hole portion 25 into the second accommodating portion 92 and reaches the second flow path portion 22 through the through hole 60d. It flows. Further, as shown in FIG. 4, the through hole 60d is closed by the outer peripheral surface of the valve body portion 52 in the closed state CS.

筒部材本体６０ａは、筒部材本体６０ａの下側の端面から上側に窪む溝部６０ｅ，６０ｆを有する。溝部６０ｅ，６０ｆは、周方向に沿った円環状である。溝部６０ｅは、溝部６０ｆの径方向外側に位置する。溝部６０ｅには、シール部材６３ｂが配置される。溝部６０ｆには、シール部材６３ｃが配置される。 The tubular member main body 60a has groove portions 60e and 60f recessed upward from the lower end surface of the tubular member main body 60a. The groove portions 60e and 60f are annular in the circumferential direction. The groove portion 60e is located on the radial outer side of the groove portion 60f. A seal member 63b is arranged in the groove portion 60e. A seal member 63c is arranged in the groove portion 60f.

本実施形態においてシール部材６３ｂ，６３ｃは、周方向に沿った環状であり、溝部６０ｅ，６０ｆに嵌め込まれる。シール部材６３ｂ，６３ｃは、中心軸Ｊを中心とする円環状である。シール部材６３ｂ，６３ｃは、例えば、Ｏリングである。シール部材６３ｂ，６３ｃは、溝部６０ｅ，６０ｆの溝底面と仕切壁部２７の上側の面とに接触する。これにより、シール部材６３ｂ，６３ｃは、筒部材本体６０ａの下側の端面と仕切壁部２７の上側の面との間を封止する。すなわち、シール部材６３ｂ，６３ｃは、筒部材６０の下側の端部と第１孔部２５が設けられた面との間を封止する。これにより、貫通孔６０ｄが弁体部５２の外周面によって閉塞された閉状態ＣＳにおいて、筒部材６０の内部の流体Ｗが第２流路部２２に漏れることを抑制できる。 In the present embodiment, the seal members 63b and 63c are annular along the circumferential direction and are fitted into the groove portions 60e and 60f. The seal members 63b and 63c have an annular shape centered on the central axis J. The seal members 63b and 63c are, for example, O-rings. The sealing members 63b and 63c come into contact with the bottom surface of the groove portions 60e and 60f and the upper surface of the partition wall portion 27. As a result, the seal members 63b and 63c seal between the lower end surface of the tubular member main body 60a and the upper surface of the partition wall portion 27. That is, the seal members 63b and 63c seal between the lower end portion of the tubular member 60 and the surface provided with the first hole portion 25. As a result, in the closed state CS in which the through hole 60d is closed by the outer peripheral surface of the valve body portion 52, it is possible to prevent the fluid W inside the tubular member 60 from leaking to the second flow path portion 22.

突出部６０ｂは、筒部材本体６０ａの上側の端部から径方向外側に突出する。突出部６０ｂは、周方向に沿った円環状である。突出部６０ｂは、上壁部２８における上側の面のうち取付孔２６の周縁部の上側に位置する。 The protruding portion 60b protrudes radially outward from the upper end portion of the tubular member main body 60a. The protrusion 60b is an annular shape along the circumferential direction. The protrusion 60b is located above the peripheral edge of the mounting hole 26 in the upper surface of the upper wall 28.

筒部材６０の内部は、弁体部５２によって軸方向に仕切られる。弁体部５２は、筒部材６０の内部を、第１収容部９１と第２収容部９２とに仕切る。第１収容部９１は、筒部材６０の内部のうち弁体部５２で仕切られた上側の部分である。第２収容部９２は、筒部材６０の内部のうち弁体部５２で仕切られた下側の部分である。第２収容部９２は、第１収容部９１の下側に位置する。 The inside of the tubular member 60 is partitioned in the axial direction by the valve body portion 52. The valve body portion 52 divides the inside of the tubular member 60 into a first accommodating portion 91 and a second accommodating portion 92. The first accommodating portion 91 is an upper portion of the inside of the tubular member 60, which is partitioned by the valve body portion 52. The second accommodating portion 92 is a lower portion of the inside of the tubular member 60, which is partitioned by the valve body portion 52. The second accommodating portion 92 is located below the first accommodating portion 91.

第１収容部９１は、第１流路部２１を流れる流体Ｗを収容可能である。第１収容部９１の内部のうち上側の端部は、取付孔２６よりも上側に位置する。図４に示すように、第１収容部９１は、閉状態ＣＳにおいて第２流路部２２と遮断される。本実施形態において第１収容部９１は、本体部４０と弁体部５２と筒部材６０とに囲まれて構成される。本実施形態において第２収容部９２は、弁体部５２と筒部材６０と仕切壁部２７とに囲まれて構成される。第２収容部９２には、図３に示すように、開状態ＯＳにおいて貫通孔６０ｄを介して第２流路部２２が繋がる。これにより、第２収容部９２は、第２流路部２２を流れる流体Ｗを収容可能である。 The first accommodating portion 91 can accommodate the fluid W flowing through the first flow path portion 21. The upper end of the inside of the first accommodating portion 91 is located above the mounting hole 26. As shown in FIG. 4, the first accommodating portion 91 is cut off from the second flow path portion 22 in the closed state CS. In the present embodiment, the first accommodating portion 91 is surrounded by a main body portion 40, a valve body portion 52, and a tubular member 60. In the present embodiment, the second accommodating portion 92 is configured to be surrounded by the valve body portion 52, the tubular member 60, and the partition wall portion 27. As shown in FIG. 3, the second accommodating portion 92 is connected to the second flow path portion 22 via the through hole 60d in the open state OS. As a result, the second accommodating portion 92 can accommodate the fluid W flowing through the second flow path portion 22.

図３および図４に示すように、第１収容部９１の容積および第２収容部９２の容積は、開状態ＯＳと閉状態ＣＳとで変化する。閉状態ＣＳにおける第１収容部９１の容積は、開状態ＯＳにおける第１収容部９１の容積よりも大きい。閉状態ＣＳにおける第２収容部９２の容積は、開状態ＯＳにおける第２収容部９２の容積よりも小さい。本実施形態において第２収容部９２には、開状態ＯＳおよび閉状態ＣＳの両方において流体Ｗが収容された状態となる。 As shown in FIGS. 3 and 4, the volume of the first accommodating portion 91 and the volume of the second accommodating portion 92 change between the open state OS and the closed state CS. The volume of the first accommodating portion 91 in the closed state CS is larger than the volume of the first accommodating portion 91 in the open state OS. The volume of the second accommodating portion 92 in the closed state CS is smaller than the volume of the second accommodating portion 92 in the open state OS. In the present embodiment, the fluid W is accommodated in the second accommodating portion 92 in both the open state OS and the closed state CS.

筒部材６０は、電磁弁３０の外部と筒部材６０の内部とを繋ぐ接続流路部６６をさらに有する。接続流路部６６は、閉状態ＣＳにおいて第１孔部２５よりも径方向外側に位置する第２孔部２９を介して第１流路部２１と繋がる。第２孔部２９は、仕切壁部２７を軸方向に貫通する孔である。図４に示すように、接続流路部６６は、閉状態ＣＳにおいて第１流路部２１と第１収容部９１とを繋ぐ。 The tubular member 60 further includes a connecting flow path portion 66 that connects the outside of the solenoid valve 30 and the inside of the tubular member 60. The connection flow path portion 66 is connected to the first flow path portion 21 via the second hole portion 29 located radially outside the first hole portion 25 in the closed state CS. The second hole portion 29 is a hole that penetrates the partition wall portion 27 in the axial direction. As shown in FIG. 4, the connecting flow path portion 66 connects the first flow path portion 21 and the first accommodating portion 91 in the closed state CS.

そのため、図４に示す閉状態ＣＳにおいて、接続流路部６６を介して、第１収容部９１内に第１流路部２１から流体Ｗが流入した状態となる。これにより、第１収容部９１内の流体Ｗの圧力によって、弁体部５２の第１受圧面５２ａには下側向きの流体力Ｆｗ１が加えられる。したがって、第１流路部２１内の流体Ｗの圧力によって弁体部５２の第２受圧面５２ｂに加えられる流体力Ｆｗ２の少なくとも一部を、流体力Ｆｗ１によって相殺することができる。そのため、弁体部５２によって第１孔部２５を閉塞して、閉状態ＣＳに維持するために必要な電磁弁３０の出力を小さくできる。これにより、電磁弁３０を小型化できる。 Therefore, in the closed state CS shown in FIG. 4, the fluid W flows into the first accommodating portion 91 from the first flow path portion 21 via the connection flow path portion 66. As a result, a downward fluid force Fw1 is applied to the first pressure receiving surface 52a of the valve body portion 52 by the pressure of the fluid W in the first accommodating portion 91. Therefore, at least a part of the fluid force Fw2 applied to the second pressure receiving surface 52b of the valve body portion 52 by the pressure of the fluid W in the first flow path portion 21 can be offset by the fluid force Fw1. Therefore, the output of the solenoid valve 30 required to close the first hole portion 25 by the valve body portion 52 and maintain the closed state CS can be reduced. As a result, the solenoid valve 30 can be miniaturized.

なお、本実施形態において電磁弁３０の出力とは、電磁力Ｆｍである。本実施形態の閉状態ＣＳは、電磁力Ｆｍと流体力Ｆｗ１との合計が、流体力Ｆｗ２と弾性部材８０からの弾性力Ｆｓとの合計よりも大きいことで、維持される。 In this embodiment, the output of the solenoid valve 30 is an electromagnetic force Fm. The closed state CS of the present embodiment is maintained because the sum of the electromagnetic force Fm and the fluid force Fw1 is larger than the sum of the fluid force Fw2 and the elastic force Fs from the elastic member 80.

また、例えば、第１孔部２５の開口面積が大きいほど、開状態ＯＳにおいて第１流路部２１から第２流路部２２へと流れる流体Ｗの損失を小さくできる。しかし、一方で、第１孔部２５の開口面積が大きいほど、弁体部５２の第２受圧面５２ｂに加えられる流体力Ｆｗ２が大きくなる。そのため、従来では、流体Ｗの損失を抑えようとして第１孔部２５の開口面積を大きくすると、電磁弁の出力を大きくする必要があり、電磁弁が大型化する場合があった。 Further, for example, the larger the opening area of the first hole portion 25, the smaller the loss of the fluid W flowing from the first flow path portion 21 to the second flow path portion 22 in the open state OS. However, on the other hand, the larger the opening area of the first hole portion 25, the larger the fluid force Fw2 applied to the second pressure receiving surface 52b of the valve body portion 52. Therefore, conventionally, if the opening area of the first hole 25 is increased in order to suppress the loss of the fluid W, it is necessary to increase the output of the solenoid valve, and the solenoid valve may be increased in size.

これに対して、本実施形態によれば、上述したように、閉状態ＣＳを維持するために必要な電磁弁３０の出力を小さくできる。そのため、電磁弁３０の出力を変えずに、従来よりも大きい流体力Ｆｗ２に抗して閉状態ＣＳを維持できる。これにより、電磁弁３０を大型化することなく、第１孔部２５の開口面積を従来よりも大きくでき、流路部２０を流れる流体Ｗの損失を低減できる。 On the other hand, according to the present embodiment, as described above, the output of the solenoid valve 30 required to maintain the closed state CS can be reduced. Therefore, the closed state CS can be maintained against the larger fluid force Fw2 than before without changing the output of the solenoid valve 30. As a result, the opening area of the first hole portion 25 can be made larger than before without increasing the size of the solenoid valve 30, and the loss of the fluid W flowing through the flow path portion 20 can be reduced.

また、本実施形態によれば、筒部材６０の下側の端部と第１孔部２５が設けられた面との間を封止するシール部材６３ｂ，６３ｃが設けられる。そのため、閉状態ＣＳにおいて、仮に第１収容部９１内の流体Ｗが弁体部５２の外周面と筒部材６０の内周面との間から第２収容部９２内に漏れた場合であっても、第２収容部９２内から第２流路部２２に流体Ｗが漏れることを抑制できる。これにより、閉状態ＣＳにおいて、第１収容部９１を第２流路部２２と好適に遮断することができ、閉状態ＣＳを好適に維持できる。 Further, according to the present embodiment, seal members 63b and 63c are provided to seal between the lower end portion of the tubular member 60 and the surface provided with the first hole portion 25. Therefore, in the closed state CS, if the fluid W in the first accommodating portion 91 leaks into the second accommodating portion 92 from between the outer peripheral surface of the valve body portion 52 and the inner peripheral surface of the tubular member 60. Also, it is possible to prevent the fluid W from leaking from the inside of the second accommodating portion 92 to the second flow path portion 22. As a result, in the closed state CS, the first accommodating portion 91 can be suitably cut off from the second flow path portion 22, and the closed state CS can be suitably maintained.

また、本実施形態によれば、第１受圧面５２ａの面積は、第２受圧面５２ｂの面積よりも大きい。そして、第１収容部９１と第１流路部２１とは互いに繋がっているため、第１収容部９１内の流体Ｗの圧力と、第１流路部２１内の流体Ｗの圧力とは、ほぼ同じである。これにより、第１受圧面５２ａに加えられる流体力Ｆｗ１の大きさを、第２受圧面５２ｂに加えられる流体力Ｆｗ２の大きさよりも大きくできる。したがって、第２受圧面５２ｂに加えられる上側向きの流体力Ｆｗ２を、流体力Ｆｗ１によって相殺し、かつ、弁体部５２を第１孔部２５に押し付ける下側向きの力を大きくできる。そのため、閉状態ＣＳを維持するために必要な電磁弁３０の出力をより小さくできる。これにより、電磁弁３０をより小型化できる。 Further, according to the present embodiment, the area of the first pressure receiving surface 52a is larger than the area of the second pressure receiving surface 52b. Since the first accommodating portion 91 and the first flow path portion 21 are connected to each other, the pressure of the fluid W in the first accommodating portion 91 and the pressure of the fluid W in the first accommodating portion 21 are different. It's almost the same. As a result, the magnitude of the fluid force Fw1 applied to the first pressure receiving surface 52a can be made larger than the magnitude of the fluid force Fw2 applied to the second pressure receiving surface 52b. Therefore, the upward fluid force Fw2 applied to the second pressure receiving surface 52b can be offset by the fluid force Fw1, and the downward force for pressing the valve body portion 52 against the first hole portion 25 can be increased. Therefore, the output of the solenoid valve 30 required to maintain the closed state CS can be made smaller. As a result, the solenoid valve 30 can be made smaller.

接続流路部６６は、第１部分６６ａと、第２部分６６ｂと、を有する。第１部分６６ａは、筒部材６０の下側の端面から上側に延びる。より詳細には、第１部分６６ａは、筒部材６０の下側の端面のうち、溝部６０ｅが設けられた部分と溝部６０ｆが設けられた部分との径方向の間の部分から、上側に直線状に延びる。第１部分６６ａは、貫通孔６０ｄと周方向において異なる位置に配置される。本実施形態において第１部分６６ａは、貫通孔６０ｄと中心軸Ｊを挟んで径方向の反対側に配置される。第１部分６６ａは、軸方向に沿って視て、第２孔部２９と重なる。第１部分６６ａの上側の端部は、筒部材６０の軸方向の中心よりも上側に位置する。 The connection flow path portion 66 has a first portion 66a and a second portion 66b. The first portion 66a extends upward from the lower end surface of the tubular member 60. More specifically, the first portion 66a is a straight line upward from the portion of the lower end surface of the tubular member 60 between the portion provided with the groove portion 60e and the portion provided with the groove portion 60f in the radial direction. It extends like a shape. The first portion 66a is arranged at a position different from that of the through hole 60d in the circumferential direction. In the present embodiment, the first portion 66a is arranged on the opposite side in the radial direction with the through hole 60d and the central axis J interposed therebetween. The first portion 66a overlaps with the second hole portion 29 when viewed along the axial direction. The upper end of the first portion 66a is located above the axial center of the tubular member 60.

第２部分６６ｂは、第１部分６６ａから筒部材６０の内周面まで径方向内側に延びる。本実施形態において第２部分６６ｂは、第１部分６６ａの上側の端部から径方向内側に延びる。図３および図４に示すように、本実施形態において第２部分６６ｂは、開状態ＯＳおよび閉状態ＣＳのいずれの状態においても、第１収容部９１の内部に開口する。第２部分６６ｂは、例えば、筒部材本体６０ａの壁部を径方向に貫通する孔部を設けた後、その孔部の径方向外側の部分を栓部材６５で閉塞することで作られる。 The second portion 66b extends radially inward from the first portion 66a to the inner peripheral surface of the tubular member 60. In this embodiment, the second portion 66b extends radially inward from the upper end of the first portion 66a. As shown in FIGS. 3 and 4, in the present embodiment, the second portion 66b opens inside the first accommodating portion 91 in both the open state OS and the closed state CS. The second portion 66b is made, for example, by providing a hole portion that penetrates the wall portion of the tubular member main body 60a in the radial direction and then closing the portion outside the radial direction of the hole portion with the plug member 65.

このように接続流路部６６が設けられていることにより、第２孔部２９を介して第１流路部２１に露出する第１部分６６ａの下端部の開口から、第１部分６６ａに流体Ｗが流入する。そして、第１部分６６ａに流入した流体Ｗは、第２部分６６ｂから第１収容部９１に流入する。これにより、閉状態ＣＳにおいて、第１収容部９１内に流体Ｗが収容された状態となる。なお、図３に示すように、開状態ＯＳにおいても、第１収容部９１は接続流路部６６を介して第１流路部２１と繋がるため、第１収容部９１内には流体Ｗが流入する。 By providing the connecting flow path portion 66 in this way, the fluid flows from the opening at the lower end of the first portion 66a exposed to the first flow path portion 21 through the second hole portion 29 to the first portion 66a. W flows in. Then, the fluid W that has flowed into the first portion 66a flows into the first accommodating portion 91 from the second portion 66b. As a result, in the closed state CS, the fluid W is contained in the first accommodating portion 91. As shown in FIG. 3, even in the open state OS, the first accommodating portion 91 is connected to the first accommodating portion 21 via the connecting flow path portion 66, so that the fluid W is contained in the first accommodating portion 91. Inflow.

（第１変形例）
図５は、本変形例の電磁弁１３０の開状態ＯＳを示す。図６は、本変形例の電磁弁１３０の閉状態ＣＳを示す。図５および図６に示すように、本変形例の電磁弁１３０において筒部材１６０は、第１筒部材１６１と、第２筒部材１６２と、を有する。第１筒部材１６１と第２筒部材１６２とは、互いに別部材である。第１筒部材１６１および第２筒部材１６２は、軸方向に延びる筒状である。本変形例において第１筒部材１６１および第２筒部材１６２は、中心軸Ｊを中心とし、軸方向両側に開口する円筒状である。第２筒部材１６２は、第１筒部材１６１の径方向外側に位置する。すなわち、第１筒部材１６１は、第２筒部材１６２の内部に挿入される。 (First modification)
FIG. 5 shows an open state OS of the solenoid valve 130 of this modification. FIG. 6 shows the closed state CS of the solenoid valve 130 of this modification. As shown in FIGS. 5 and 6, in the solenoid valve 130 of this modification, the tubular member 160 has a first tubular member 161 and a second tubular member 162. The first cylinder member 161 and the second cylinder member 162 are separate members from each other. The first cylinder member 161 and the second cylinder member 162 have a cylindrical shape extending in the axial direction. In this modification, the first cylinder member 161 and the second cylinder member 162 have a cylindrical shape that opens on both sides in the axial direction with the central axis J as the center. The second cylinder member 162 is located on the radial outer side of the first cylinder member 161. That is, the first cylinder member 161 is inserted inside the second cylinder member 162.

第１筒部材１６１は、第１筒部材本体１６１ａと、第１突出部１６１ｂと、を有する。第１筒部材本体１６１ａは、軸方向に延びる円筒状の部分である。第１筒部材本体１６１ａの下側の端面は、仕切壁部２７の上側の面と接触する。第１筒部材本体１６１ａの下側の端面にはシール部材６３ｃが嵌め合わされる溝部が設けられる。第１突出部１６１ｂは、第１筒部材本体１６１ａの上側の端部から径方向外側に突出する。本変形例において第１突出部１６１ｂは、板面が軸方向を向く板状であり、周方向に沿った円環状である。 The first cylinder member 161 has a first cylinder member main body 161a and a first protruding portion 161b. The first cylinder member main body 161a is a cylindrical portion extending in the axial direction. The lower end surface of the first cylinder member main body 161a comes into contact with the upper surface of the partition wall portion 27. A groove into which the seal member 63c is fitted is provided on the lower end surface of the first cylinder member main body 161a. The first protruding portion 161b protrudes radially outward from the upper end portion of the first cylinder member main body 161a. In this modification, the first protruding portion 161b has a plate shape in which the plate surface faces the axial direction, and is an annular shape along the circumferential direction.

第２筒部材１６２は、第２筒部材本体１６２ａと、第２突出部１６２ｂと、を有する。第２筒部材本体１６２ａは、軸方向に延びる円筒状の部分である。第２筒部材本体１６２ａは、第１筒部材本体１６１ａの径方向外側に隙間を介して対向して配置される。第２筒部材本体１６２ａの下側の端面は、仕切壁部２７の上側の面と接触する。第２筒部材本体１６２ａの下側の端面にはシール部材６３ｂが嵌め合わされる溝部が設けられる。 The second cylinder member 162 has a second cylinder member main body 162a and a second protruding portion 162b. The second cylinder member main body 162a is a cylindrical portion extending in the axial direction. The second cylinder member main body 162a is arranged so as to face each other on the radial outer side of the first cylinder member main body 161a with a gap. The lower end surface of the second cylinder member main body 162a comes into contact with the upper surface of the partition wall portion 27. A groove into which the seal member 63b is fitted is provided on the lower end surface of the second cylinder member main body 162a.

第２突出部１６２ｂは、第２筒部材本体１６２ａの上側の端部から径方向外側に突出する。本変形例において第２突出部１６２ｂは、板面が軸方向を向く板状であり、周方向に沿った円環状である。第２突出部１６２ｂは、第１突出部１６１ｂの下側に位置する。第１突出部１６１ｂの径方向外側の部分と第２突出部１６２ｂとは、互いに接触した状態で軸方向に重ねられ、図３および図４において示した突出部６０ｂと同様の部分を構成する。 The second protruding portion 162b protrudes radially outward from the upper end portion of the second cylinder member main body 162a. In this modification, the second protruding portion 162b has a plate shape with the plate surface facing the axial direction, and is an annular shape along the circumferential direction. The second protrusion 162b is located below the first protrusion 161b. The radially outer portion of the first protrusion 161b and the second protrusion 162b are overlapped in the axial direction in a state of being in contact with each other, and form the same portion as the protrusion 60b shown in FIGS. 3 and 4.

本変形例において、接続流路部１６６の第１部分１６６ａは、第１筒部材１６１と第２筒部材１６２との径方向の間に位置する。すなわち、第１部分１６６ａは、第２筒部材１６２の内周面と、第２筒部材１６２の内部に挿入された第１筒部材１６１の外周面との径方向の隙間によって構成される。本変形例において第１部分１６６ａは、軸方向に延びる円筒状である。 In this modification, the first portion 166a of the connection flow path portion 166 is located between the first cylinder member 161 and the second cylinder member 162 in the radial direction. That is, the first portion 166a is composed of a radial gap between the inner peripheral surface of the second cylinder member 162 and the outer peripheral surface of the first cylinder member 161 inserted inside the second cylinder member 162. In this modification, the first portion 166a has a cylindrical shape extending in the axial direction.

接続流路部１６６の第２部分１６６ｂは、第１筒部材１６１を外周面から内周面まで径方向に貫通する孔である。第２部分１６６ｂは、第１筒部材本体１６１ａの上側の部分に設けられる。 The second portion 166b of the connection flow path portion 166 is a hole that penetrates the first cylinder member 161 from the outer peripheral surface to the inner peripheral surface in the radial direction. The second portion 166b is provided in the upper portion of the first cylinder member main body 161a.

このように、本変形例においては、２つの筒部材を、隙間を介して径方向に重ね合わせることで第１部分１６６ａを容易に作ることができる。また、径方向内側の第１筒部材１６１の壁部を径方向に貫通することで第２部分１６６ｂを容易に作ることができる。そのため、本変形例によれば、接続流路部１６６を容易に作ることができる。 As described above, in the present modification, the first portion 166a can be easily formed by superimposing the two tubular members in the radial direction through the gap. Further, the second portion 166b can be easily formed by penetrating the wall portion of the first cylinder member 161 inside in the radial direction in the radial direction. Therefore, according to this modification, the connection flow path portion 166 can be easily formed.

本変形例において貫通孔１６０ｄは、第１筒部材１６１の下側の部分の壁部を径方向に貫通する第１貫通孔１６１ｃと、第２筒部材１６２の下側の部分の壁部を径方向に貫通する第２貫通孔１６２ｃと、によって構成される。本変形例の電磁弁１３０は、貫通孔１６０ｄに嵌め合わされる嵌合部材１６７をさらに備える。 In this modification, the through hole 160d has a diameter of the first through hole 161c that radially penetrates the wall portion of the lower portion of the first cylinder member 161 and the wall portion of the lower portion of the second cylinder member 162. It is composed of a second through hole 162c penetrating in the direction. The solenoid valve 130 of this modification further includes a fitting member 167 that is fitted into the through hole 160d.

嵌合部材１６７は、径方向両側に開口する筒状である。嵌合部材１６７は、第２貫通孔１６２ｃから第１部分１６６ａを通って第１貫通孔１６１ｃまで径方向に延びる。嵌合部材１６７の径方向内側の部分は、第１貫通孔１６１ｃに嵌め合わされる。嵌合部材１６７の径方向外側の部分は、第２貫通孔１６２ｃに嵌め合わされる。図５に示すように、嵌合部材１６７の内部は、開状態ＯＳにおいて第２収容部９２と第２流路部２２とを繋ぐ。このように嵌合部材１６７を設けることで、第１筒部材１６１と第２筒部材１６２との径方向の隙間、すなわち第１部分１６６ａを貫通孔１６０ｄと遮断しつつ、第２収容部９２と第２流路部２２とを繋ぐことができる。したがって、第１部分１６６ａから貫通孔１６０ｄを介して第２流路部２２に流体Ｗが漏れることを抑制できる。 The fitting member 167 has a cylindrical shape that opens on both sides in the radial direction. The fitting member 167 extends radially from the second through hole 162c through the first portion 166a to the first through hole 161c. The radially inner portion of the fitting member 167 is fitted into the first through hole 161c. The radially outer portion of the fitting member 167 is fitted into the second through hole 162c. As shown in FIG. 5, the inside of the fitting member 167 connects the second accommodating portion 92 and the second flow path portion 22 in the open state OS. By providing the fitting member 167 in this way, the radial gap between the first cylinder member 161 and the second cylinder member 162, that is, the first portion 166a is blocked from the through hole 160d, and the second accommodating portion 92 is provided. It can be connected to the second flow path portion 22. Therefore, it is possible to prevent the fluid W from leaking from the first portion 166a to the second flow path portion 22 via the through hole 160d.

（第２変形例）
図７は、本変形例の電磁弁２３０の開状態ＯＳを示す。図８は、本変形例の電磁弁２３０の閉状態ＣＳを示す。図７および図８に示すように、本変形例の電磁弁２３０において、接続流路部２６６の第１部分２６６ａは、筒部材２６０の外周面から径方向内側に窪む溝である。そのため、筒部材２６０の外周面に溝を設けることで、第１部分２６６ａを作ることができる。これにより、接続流路部２６６を容易に作ることができる。 (Second modification)
FIG. 7 shows the open state OS of the solenoid valve 230 of this modification. FIG. 8 shows the closed state CS of the solenoid valve 230 of this modification. As shown in FIGS. 7 and 8, in the solenoid valve 230 of this modification, the first portion 266a of the connection flow path portion 266 is a groove recessed inward in the radial direction from the outer peripheral surface of the tubular member 260. Therefore, the first portion 266a can be formed by providing a groove on the outer peripheral surface of the tubular member 260. Thereby, the connection flow path portion 266 can be easily made.

第１部分２６６ａは、筒部材２６０の下側の端面の径方向外縁部から上側に直線状に延びる。第１部分２６６ａの径方向外側の開口は、弁収容部２２ａの内周面によって閉塞される。第１部分２６６ａの下側の端部は、第２孔部２２９を介して、第１流路部２１と繋がる。本変形例において第２部分２６６ｂは、第１部分２６６ａの溝底面から筒部材２６０の内周面まで筒部材２６０を貫通する孔である。本変形例において筒部材２６０は、単一の部材である。 The first portion 266a extends linearly upward from the radial outer edge of the lower end face of the tubular member 260. The radial outer opening of the first portion 266a is closed by the inner peripheral surface of the valve accommodating portion 22a. The lower end of the first portion 266a is connected to the first flow path portion 21 via the second hole portion 229. In this modification, the second portion 266b is a hole that penetrates the tubular member 260 from the bottom surface of the groove of the first portion 266a to the inner peripheral surface of the tubular member 260. In this modification, the tubular member 260 is a single member.

本発明は上述の実施形態に限られず、以下の他の構成を採用することもできる。弁体部の形状は、筒部材の内部を第１収容部と第２収容部とに仕切れるならば、特に限定されない。第１受圧面の面積と第２受圧面の面積とは、互いに同じであってもよい。 The present invention is not limited to the above-described embodiment, and other configurations described below can also be adopted. The shape of the valve body portion is not particularly limited as long as the inside of the tubular member is partitioned into the first accommodating portion and the second accommodating portion. The area of the first pressure receiving surface and the area of the second pressure receiving surface may be the same as each other.

接続流路部は、筒部材に設けられ、閉状態ＣＳにおいて第１流路部と第１収容部とを繋ぐならば、特に限定されない。接続流路部は、曲がって延びてもよい。接続流路部は、複数設けられてもよい。接続流路部の数は、特に限定されない。接続流路部は、開状態ＯＳにおいて、第１流路部と第１収容部とを繋がなくてもよい。図３および図４に示す電磁弁３０と図５および図６に示す電磁弁１３０とにおいては、筒部材は弁収容部２２ａに嵌め合わされなくてもよい。 The connecting flow path portion is not particularly limited as long as it is provided on the tubular member and connects the first flow path portion and the first accommodating portion in the closed state CS. The connecting flow path portion may be bent and extended. A plurality of connection flow path portions may be provided. The number of connecting flow paths is not particularly limited. The connection flow path portion does not have to connect the first flow path portion and the first accommodating portion in the open state OS. In the solenoid valve 30 shown in FIGS. 3 and 4 and the solenoid valve 130 shown in FIGS. 5 and 6, the tubular member may not be fitted to the valve accommodating portion 22a.

なお、上述した実施形態の電磁弁および流路装置の用途は、特に限定されない。また、以上に説明した各構成は、相互に矛盾しない範囲において、適宜組み合わせることができる。 The use of the solenoid valve and the flow path device of the above-described embodiment is not particularly limited. Further, the configurations described above can be appropriately combined as long as they do not contradict each other.

１０…流路装置、２０…流路部、２１…第１流路部、２２…第２流路部、２２ａ…弁収容部、２５…第１孔部、２９，２２９…第２孔部、３０，１３０，２３０…電磁弁、４０…本体部、４１…カバー、４２…ソレノイド、５０…可動部、５１…シャフト部、５２…弁体部、６０，１６０，２６０…筒部材、６０ｄ，１６０ｄ…貫通孔、６３ｂ，６３ｃ…シール部材、６６，１６６，２６６…接続流路部、６６ａ，１６６ａ，２６６ａ…第１部分、６６ｂ，１６６ｂ，２６６ｂ…第２部分、９１…第１収容部、９２…第２収容部、１６１…第１筒部材、１６２…第２筒部材、１６７…嵌合部材、ＣＳ…閉状態、Ｊ…中心軸、ＯＳ…開状態、Ｗ…流体 10 ... Flow path device, 20 ... Flow path section, 21 ... First flow path section, 22 ... Second flow path section, 22a ... Valve accommodating section, 25 ... First hole section, 29, 229 ... Second hole section, 30, 130, 230 ... Solenoid valve, 40 ... Main body, 41 ... Cover, 42 ... Solenoid, 50 ... Movable part, 51 ... Shaft part, 52 ... Valve body part, 60, 160, 260 ... Cylinder member, 60d, 160d ... Through hole, 63b, 63c ... Seal member, 66,166,266 ... Connection flow path portion, 66a, 166a, 266a ... First part, 66b, 166b, 266b ... Second part, 91 ... First accommodating part, 92 ... 2nd accommodating portion, 161 ... 1st cylinder member, 162 ... 2nd cylinder member, 167 ... fitting member, CS ... closed state, J ... central axis, OS ... open state, W ... fluid

Claims (7)

軸方向に延びる中心軸に沿って移動可能な可動部を備え、第１流路部と前記第１流路部の軸方向一方側に位置する第２流路部とが第１孔部を介して繋がれる開状態と、前記第１孔部が閉塞されて前記第１流路部と前記第２流路部とが遮断される閉状態と、を切り換え可能な電磁弁であって、
前記可動部を軸方向に移動させるソレノイドと前記ソレノイドを収容するカバーとを有する本体部と、
前記本体部から軸方向他方側に延びる筒状の筒部材と、
を備え、
前記可動部は、
前記本体部から軸方向他方側に突出し、前記筒部材の内部に挿入されるシャフト部と、
前記シャフト部に設けられ、前記閉状態において軸方向一方側から前記第１孔部を閉塞する弁体部と、
を有し、
前記筒部材の軸方向他方側の端部は、軸方向他方側に開口し、かつ、前記第１孔部が設けられた面と接触し、
前記弁体部は、前記筒部材の内部を、第１収容部と前記第１収容部の軸方向他方側に位置する第２収容部とに仕切り、
前記筒部材は、
前記筒部材を内周面から外周面まで径方向に貫通する貫通孔と、
前記閉状態において前記第１流路部と前記第１収容部とを繋ぐ接続流路部と、
を有し、
前記接続流路部は、前記閉状態において前記第１孔部よりも径方向外側に位置する第２孔部を介して前記第１流路部と繋がり、
前記第２収容部には、前記開状態において前記貫通孔を介して前記第２流路部が繋がり、
前記第１収容部は、前記第１流路部を流れる流体を収容可能であり、かつ、前記閉状態において前記第２流路部と遮断される、電磁弁。 A movable portion that can move along a central axis extending in the axial direction is provided, and a first flow path portion and a second flow path portion located on one side in the axial direction of the first flow path portion are interposed via a first hole portion. It is a solenoid valve that can switch between an open state in which the first hole portion is closed and a closed state in which the first flow path portion and the second flow path portion are blocked.
A main body portion having a solenoid for moving the movable portion in the axial direction and a cover for accommodating the solenoid, and a main body portion.
A cylindrical member extending from the main body to the other side in the axial direction,
Equipped with
The movable part is
A shaft portion that protrudes from the main body portion to the other side in the axial direction and is inserted into the tubular member.
A valve body portion provided on the shaft portion and closing the first hole portion from one side in the axial direction in the closed state, and a valve body portion.
Have,
The end portion of the tubular member on the other side in the axial direction opens on the other side in the axial direction and comes into contact with the surface provided with the first hole portion.
The valve body portion divides the inside of the tubular member into a first accommodating portion and a second accommodating portion located on the other side in the axial direction of the first accommodating portion.
The tubular member
A through hole that penetrates the tubular member from the inner peripheral surface to the outer peripheral surface in the radial direction,
A connecting flow path portion connecting the first flow path portion and the first accommodating portion in the closed state,
Have,
The connection flow path portion is connected to the first flow path portion via a second hole portion located radially outside the first hole portion in the closed state.
The second flow path portion is connected to the second accommodating portion via the through hole in the open state.
The first accommodating portion is a solenoid valve capable of accommodating a fluid flowing through the first flow path portion and shut off from the second flow path portion in the closed state. 前記接続流路部は、
前記筒部材の軸方向他方側の端面から軸方向一方側に延びる第１部分と、
前記第１部分から前記筒部材の内周面まで径方向内側に延びる第２部分と、
を有する、請求項１に記載の電磁弁。 The connection flow path portion is
A first portion extending from the end face on the other side in the axial direction of the tubular member to one side in the axial direction,
A second portion extending radially inward from the first portion to the inner peripheral surface of the tubular member,
The solenoid valve according to claim 1. 前記筒部材は、
軸方向に延びる第１筒部材と、
軸方向に延び、前記第１筒部材の径方向外側に位置する第２筒部材と、
を有し、
前記第１部分は、前記第１筒部材と前記第２筒部材との径方向の間に位置し、
前記第２部分は、前記第１筒部材を外周面から内周面まで径方向に貫通する孔である、請求項２に記載の電磁弁。 The tubular member
The first cylinder member extending in the axial direction and
A second cylinder member extending in the axial direction and located radially outside the first cylinder member,
Have,
The first portion is located between the first cylinder member and the second cylinder member in the radial direction.
The solenoid valve according to claim 2, wherein the second portion is a hole that penetrates the first cylinder member in the radial direction from the outer peripheral surface to the inner peripheral surface. 前記貫通孔に嵌め合わされる嵌合部材をさらに備え、
前記嵌合部材は、径方向両側に開口する筒状であり、前記開状態において前記第２収容部と前記第２流路部とを繋ぐ、請求項３に記載の電磁弁。 Further provided with a fitting member to be fitted into the through hole,
The solenoid valve according to claim 3, wherein the fitting member has a cylindrical shape that opens on both sides in the radial direction, and connects the second accommodating portion and the second flow path portion in the open state. 前記第１部分は、前記筒部材の外周面から径方向内側に窪む溝であり、
前記第２部分は、前記溝の溝底面から前記筒部材の内周面まで前記筒部材を貫通する孔であり、
前記筒部材は、前記第２流路部に設けられた弁収容部に嵌め合わされ、
前記第１部分の径方向外側の開口は、前記弁収容部の内周面によって閉塞される、請求項３に記載の電磁弁。 The first portion is a groove recessed inward in the radial direction from the outer peripheral surface of the tubular member.
The second portion is a hole that penetrates the tubular member from the bottom surface of the groove to the inner peripheral surface of the tubular member.
The tubular member is fitted into a valve accommodating portion provided in the second flow path portion.
The solenoid valve according to claim 3, wherein the radial outer opening of the first portion is closed by the inner peripheral surface of the valve accommodating portion. 前記筒部材の軸方向他方側の端部と前記第１孔部が設けられた面との間を封止するシール部材をさらに備える、請求項１から５のいずれか一項に記載の電磁弁。 The solenoid valve according to any one of claims 1 to 5, further comprising a sealing member for sealing between the end portion of the tubular member on the other side in the axial direction and the surface provided with the first hole portion. .. 請求項１から６のいずれか一項に記載の電磁弁と、
前記第１流路部と前記第２流路部と前記第１孔部とを有する流路部と、
を備える流路装置。 The solenoid valve according to any one of claims 1 to 6 and the solenoid valve.
A flow path portion having the first flow path portion, the second flow path portion, and the first hole portion,
A flow path device comprising.
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