JP7022222B2 - solenoid valve - Google Patents

solenoid valve Download PDF

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JP7022222B2
JP7022222B2 JP2020561980A JP2020561980A JP7022222B2 JP 7022222 B2 JP7022222 B2 JP 7022222B2 JP 2020561980 A JP2020561980 A JP 2020561980A JP 2020561980 A JP2020561980 A JP 2020561980A JP 7022222 B2 JP7022222 B2 JP 7022222B2
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valve
valve body
solenoid valve
spring holding
flow path
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JPWO2020136694A1 (en
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和宏 金森
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Pacific Industrial Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Description

本開示は、電磁弁に関する。 The present disclosure relates to solenoid valves.

特許文献１に記載の電磁弁は、弁孔の開口縁と、弁体との間に圧縮コイルばねが備えられている。 The solenoid valve described in Patent Document 1 is provided with a compression coil spring between the opening edge of the valve hole and the valve body.

特開２０１７－１６０９８３号（図２）JP-A-2017-160983 (Fig. 2)

弁孔径の拡大に伴う大型化の抑制が可能な電磁弁が求められている。 There is a demand for a solenoid valve that can suppress the increase in size due to the expansion of the valve hole diameter.

上記課題を解決するためになされた請求項１の電磁弁は、流体が通過する内部流路の途中に弁孔が設けられたボディと、前記弁孔を開閉する弁体と、前記ボディに固定されて、前記弁体の一端側を直動可能に支持するスリーブと、を有する電磁弁であって、前記弁体には、前記スリーブの内側面に摺動して前記弁体の移動方向を規制する摺動部と、前記摺動部の下方で前記弁孔の開口縁との間に挟まれるバネを保持するバネ保持部とが形成され、前記バネ保持部は、前記摺動部よりも外側に張り出し、前記弁体が最も大きく開いた状態である全開位置に配置されたときに、前記ボディのうち前記内部流路の内側面の上端と、前記バネ保持部の下面とが同じ高さに位置する。
The solenoid valve of claim 1 made to solve the above problems is fixed to the body, a body having a valve hole in the middle of an internal flow path through which a fluid passes, a valve body that opens and closes the valve hole, and the body. A solenoid valve having a sleeve that movably supports one end side of the valve body, and the valve body slides on the inner surface of the sleeve to provide a moving direction of the valve body. A sliding portion to be regulated and a spring holding portion for holding a spring sandwiched between the sliding portion and the opening edge of the valve hole are formed below the sliding portion, and the spring holding portion is more than the sliding portion. When the valve body is placed in the fully open position in which the valve body is in the most open state, the upper end of the inner surface of the internal flow path of the body and the lower surface of the spring holding portion are at the same height. Located in .

実施形態に係る電磁弁の側断面図Side sectional view of the solenoid valve according to the embodiment 電磁弁の側断面図（全開位置）Side sectional view of solenoid valve (fully open position) （Ａ）閉位置の弁体の略側断面図（Ｂ）全開位置の弁体の略側断面図(A) Approximate side sectional view of the valve body in the closed position (B) Approximate side sectional view of the valve body in the fully open position 従来の電磁弁の側断面図Side sectional view of a conventional solenoid valve 変形例に係る電磁弁の側断面図Side sectional view of the solenoid valve according to the modified example

［第１実施形態］
図１には電磁弁１０の断面図が示されている。本実施形態の電磁弁１０は所謂パイロット式の電磁弁である。電磁弁１０は、金属ブロックからなるボディ２０に形成された流体が通過する内部流路２５の途中位置に弁孔２７が設けられ、その弁孔２７を開閉する弁体１１を有している。弁体１１は、ボディ２０に固定されたガイドスリーブ３０によって直動可能に支持されている。[First Embodiment]
FIG. 1 shows a cross-sectional view of the solenoid valve 10. The solenoid valve 10 of this embodiment is a so-called pilot type solenoid valve. The solenoid valve 10 has a valve hole 27 provided in the middle of an internal flow path 25 formed in a body 20 made of a metal block through which a fluid passes, and has a valve body 11 that opens and closes the valve hole 27. The valve body 11 is movably supported by a guide sleeve 30 fixed to the body 20.

ボディ２０には、ガイドスリーブ３０の一端が収容される嵌合孔２３が設けられている。そして、嵌合孔２３に弁体１１の移動方向を案内するガイドスリーブ３０が嵌合されている。また、ボディ２０には、左側に開放する第１流路２１と、第１流路２１よりも下方に設けられ、右側に開放する第２流路２２と、第１流路２１と第２流路２２とを連絡する連絡流路２４が設けられている。そして、連絡流路２４のうち、第１流路２１側の開口が弁孔２７になっている。弁孔２７の開口縁には開口溝２７Ｍが設けられている。なお、第１流路２１、第２流路２２及び連絡流路２４から、内部流路２５が構成される。 The body 20 is provided with a fitting hole 23 in which one end of the guide sleeve 30 is accommodated. A guide sleeve 30 that guides the moving direction of the valve body 11 is fitted in the fitting hole 23. Further, the body 20 has a first flow path 21 that opens to the left side, a second flow path 22 that is provided below the first flow path 21 and opens to the right side, and a first flow path 21 and a second flow path. A communication flow path 24 for connecting to the road 22 is provided. The opening on the first flow path 21 side of the communication flow path 24 is the valve hole 27. An opening groove 27M is provided at the opening edge of the valve hole 27. The internal flow path 25 is composed of the first flow path 21, the second flow path 22, and the connecting flow path 24.

ガイドスリーブ３０は、筒状をなし、上側にプランジャー４０を直動可能に支持するプランジャー支持部３５が形成され、下側に後述する弁体１１を直動可能に支持する弁体支持部３１が形成されている。そして、弁体支持部３１の少なくとも一部が嵌合孔２３に嵌合されている。なお、図１に示されるように、ガイドスリーブ３０のプランジャー支持部３５の回りには電磁コイル６０が配置され、電磁コイル６０に通電されると、プランジャー４０が下降する構成になっている。 The guide sleeve 30 has a cylindrical shape, and a plunger support portion 35 that movably supports the plunger 40 is formed on the upper side, and a valve body support portion that movably supports the valve body 11 described later on the lower side. 31 is formed. Then, at least a part of the valve body support portion 31 is fitted in the fitting hole 23. As shown in FIG. 1, an electromagnetic coil 60 is arranged around the plunger support portion 35 of the guide sleeve 30, and the plunger 40 is configured to be lowered when the electromagnetic coil 60 is energized. ..

弁体１１は、弁体支持部３１の内周面３１Ｎと摺動する摺動部１２と、弁孔２７を閉塞可能な弁座１４を有している。弁座１４は、弁孔２７よりも大径に形成されている。摺動部１２と弁座１４とは、胴部１５によって連絡している。胴部１５は、摺動部１２及び弁座１４よりも小径に形成されているので、弁体１１の軽量化を図ることができる。また、中心には、プランジャーと連結されるねじ部材１８が貫通している。 The valve body 11 has a sliding portion 12 that slides on the inner peripheral surface 31N of the valve body support portion 31, and a valve seat 14 that can close the valve hole 27. The valve seat 14 is formed to have a larger diameter than the valve hole 27. The sliding portion 12 and the valve seat 14 are in contact with each other by the body portion 15. Since the body portion 15 is formed to have a smaller diameter than the sliding portion 12 and the valve seat 14, the weight of the valve body 11 can be reduced. Further, a screw member 18 connected to the plunger penetrates through the center.

本実施形態の電磁弁１０は、弁孔２７の開口縁と弁体１１との間に、圧縮コイルバネ４５を狭持する構成になっている。ところで、従来の電磁弁１００は、図４に示されるように、弁孔２７０の開口縁と、摺動部１２０の下端面との間で圧縮コイルバネ４５０を狭持する構成であった。そのため、弁孔径が大きくなると、それに伴い摺動部１２０の径も大きくなる。そして摺動部１２０の径の大径化に伴い、ガイドスリーブ３００等の周辺部品も大きくなり、電磁弁１００が大型化してしまう問題があった。
The solenoid valve 10 of the present embodiment is configured to sandwich the compression coil spring 45 between the opening edge of the valve hole 27 and the valve body 11. By the way, as shown in FIG. 4, the conventional solenoid valve 100 has a configuration in which the compression coil spring 450 is sandwiched between the opening edge of the valve hole 270 and the lower end surface of the sliding portion 120. Therefore, as the valve hole diameter increases, the diameter of the sliding portion 120 also increases accordingly. As the diameter of the sliding portion 120 increases, peripheral parts such as the guide sleeve 300 also become larger, and there is a problem that the solenoid valve 100 becomes larger.

ここで、本実施形態の電磁弁１０の弁体１１は、摺動部１２よりも外側に張り出す円環状のバネ保持部１３を有している。そして、バネ保持部１３の下端面１３Ｋと、開口溝２７Ｍとの間に圧縮コイルバネ４５を狭持する構成となっている。これにより、バネ保持部１３の張り出し量を変化させることで、弁孔２７の大径化に対応することができるので、摺動部１２の径を変える必要がなく、弁孔２７の大径化による電磁弁１０の大型化を抑制することができる。また、本実施形態のように、弁体１１にバネ保持部１３を有する構成にすれば、摺動部１２の大きさを一定にすることが可能であるので、ガイドスリーブ３０等の周辺部品の共通化を図ることができる。 Here, the valve body 11 of the solenoid valve 10 of the present embodiment has an annular spring holding portion 13 that projects outward from the sliding portion 12. The compression coil spring 45 is sandwiched between the lower end surface 13K of the spring holding portion 13 and the opening groove 27M. As a result, by changing the amount of protrusion of the spring holding portion 13, it is possible to cope with the increase in the diameter of the valve hole 27, so that it is not necessary to change the diameter of the sliding portion 12, and the diameter of the valve hole 27 is increased. It is possible to suppress the increase in size of the solenoid valve 10 due to the above. Further, if the valve body 11 has the spring holding portion 13 as in the present embodiment, the size of the sliding portion 12 can be made constant, so that peripheral parts such as the guide sleeve 30 can be used. It can be standardized.

また、図１に示されるように、バネ保持部１３の上方は、摺動部１２の下端部分が内側にくびれてなるくびれ部１３Ｂが形成されている。これにより、バネ保持部１３がガイドスリーブ３０に当接する前に、バネ保持部１３の上面１３Ｊの面積が大きく確保されている。また、バネ保持部１３の下方は、弁座１４の外形よりもやや大きく形成されている。これにより、圧縮コイルバネ４５の組み付け性の向上を図ることができる。 Further, as shown in FIG. 1 , above the spring holding portion 13, a constricted portion 13B is formed in which the lower end portion of the sliding portion 12 is constricted inward. As a result, a large area of the upper surface 13J of the spring holding portion 13 is secured before the spring holding portion 13 comes into contact with the guide sleeve 30. Further, the lower portion of the spring holding portion 13 is formed to be slightly larger than the outer shape of the valve seat 14. As a result, the assembling property of the compression coil spring 45 can be improved.

ところで、本実施形態の電磁弁１０は、通電すると、プランジャー４０が下降し、弁体１１の弁座１４が弁孔２７を閉塞する閉位置に移動し（図１参照）、通電を切ると、圧縮コイルバネ４５によって、弁体１１が上側に押されて、全開位置へと移動する（図２参照）構成になっている。 By the way, when the solenoid valve 10 of the present embodiment is energized, the plunger 40 is lowered, the valve seat 14 of the valve body 11 is moved to a closed position where the valve hole 27 is closed (see FIG. 1), and the energization is turned off. The valve body 11 is pushed upward by the compression coil spring 45 and moves to the fully open position (see FIG. 2).

ここで、本実施形態の電磁弁１０は、閉位置のときに、第１流路２１の途中位置に配置されているバネ保持部１３（図１及び図３（Ａ）参照）は、全開状態になるとバネ保持部１３の上面１３Ｊが弁体支持部３１の下端面３１Ｋに当接する構成になっている（図２及び図３（Ｂ）参照）。即ち、バネ保持部１３がガイドスリーブ３０に当接することによって、弁体１１の全開位置に位置決めすることができる。従来の電磁弁１００は、摺動部１２０の上面１２０Ｊをスリーブに当てて位置決めをしていたため、摺動部１２０の上面１２０Ｊの大きさを、位置決め可能な程度の大きさにする必要があった。ここで、本実施形態の電磁弁１０は、バネ保持部１３の上面を位置決めに用いることができるので、摺動部１２の上端の形状の自由度が向上する。例えば、摺動部１２の上面がガイドスリーブ３０に当接する必要がないので、摺動部１２の軸方向の長さを短くすることができる。これにより、弁体１１における摺動部１２の重量を軽量化することができる。 Here, when the solenoid valve 10 of the present embodiment is in the closed position, the spring holding portion 13 (see FIGS. 1 and 3A) arranged at an intermediate position of the first flow path 21 is in a fully open state. Then, the upper surface 13J of the spring holding portion 13 is configured to abut on the lower end surface 31K of the valve body support portion 31 (see FIGS. 2 and 3B). That is, the spring holding portion 13 comes into contact with the guide sleeve 30 so that the valve body 11 can be positioned at the fully open position. In the conventional solenoid valve 100, the upper surface 120J of the sliding portion 120 is placed against the sleeve for positioning, so that the size of the upper surface 120J of the sliding portion 120 needs to be large enough to be positioned. .. Here, in the solenoid valve 10 of the present embodiment, since the upper surface of the spring holding portion 13 can be used for positioning, the degree of freedom in the shape of the upper end of the sliding portion 12 is improved. For example, since the upper surface of the sliding portion 12 does not need to come into contact with the guide sleeve 30, the axial length of the sliding portion 12 can be shortened. As a result, the weight of the sliding portion 12 in the valve body 11 can be reduced.

また、本実施形態の電磁弁１０は、ボディ２０の嵌合孔２３とガイドスリーブ３０の弁体支持部３１の下端面３１Ｋとの間にバネ保持部１３を収容可能な収容部２８が形成されている。具体的には、嵌合孔２３の第１流路２１側の開口は、バネ保持部１３の外径と同一又は大きく形成されている。そして、嵌合孔２３に嵌合されるガイドスリーブ３０の弁体支持部３１の下端面３１Ｋは、バネ保持部１３の軸方向の厚みと同じ分だけ第１流路２１の上方に位置する構成になっていて、この弁体支持部３１の下端面３１Ｋと第１流路２１との間に、収容部２８が形成される。 Further, in the solenoid valve 10 of the present embodiment, an accommodating portion 28 capable of accommodating the spring holding portion 13 is formed between the fitting hole 23 of the body 20 and the lower end surface 31K of the valve body support portion 31 of the guide sleeve 30. ing. Specifically, the opening of the fitting hole 23 on the first flow path 21 side is formed to be the same as or larger than the outer diameter of the spring holding portion 13. The lower end surface 31K of the valve body support portion 31 of the guide sleeve 30 fitted in the fitting hole 23 is located above the first flow path 21 by the same amount as the axial thickness of the spring holding portion 13. The accommodating portion 28 is formed between the lower end surface 31K of the valve body support portion 31 and the first flow path 21.

これにより、本実施形態の電磁弁１０は、弁体１１が全開状態のときにバネ保持部１３が収容部２８に収容される。そして、バネ保持部１３は、第１流路２１の内周面２１Ｎと面一又は奥側に配置される構成となるので、バネ保持部１３によって流れを阻害することがなく、バネ保持部１３を形成したことによる圧力損失を抑制することができる。なお、ここで「同一，面一」というのは，物理的に「厳密な同一，面一」はもちろん，技術常識的からみて同一，面一にみられる「略同一，略面一」をも含む概念である。 As a result, in the solenoid valve 10 of the present embodiment, the spring holding portion 13 is accommodated in the accommodating portion 28 when the valve body 11 is in the fully open state. Since the spring holding portion 13 is arranged so as to be flush with or behind the inner peripheral surface 21N of the first flow path 21, the flow is not obstructed by the spring holding portion 13, and the spring holding portion 13 is not obstructed. It is possible to suppress the pressure loss due to the formation of. In addition, "identical, flush" here means not only physically "exactly identical, flush" but also "substantially identical, substantially flush" that can be seen in the same technical common sense. It is a concept that includes.

［他の実施形態］
（１）上記実施形態では、バネ保持部１３は、円環状をなしていたが、複数の突片で構成されていてもよい。[Other embodiments]
(1) In the above embodiment, the spring holding portion 13 has an annular shape, but may be composed of a plurality of projecting pieces.

（２）上記実施形態では、バネ保持部１３を収容する収容部２８を有する構成であったが、収容部２８を有さない構成であってもよい。 (2) In the above embodiment, the configuration has the accommodating portion 28 accommodating the spring holding portion 13, but the configuration may not include the accommodating portion 28.

（３）上記実施形態では、バネ保持部１３は、嵌合孔２３の内径よりも小さく構成されていたが、図５に示されるように、バネ保持部１３Ｚは、嵌合孔２３の内径よりも大きく構成されていてもよい。 (3) In the above embodiment, the spring holding portion 13 is configured to be smaller than the inner diameter of the fitting hole 23, but as shown in FIG. 5, the spring holding portion 13Z is smaller than the inner diameter of the fitting hole 23. May also be configured large.

（４）上記実施形態では、バネ保持部１３の上面１３Ｊが弁体支持部３１の下端面３１Ｋに当接することで、弁体１１が全開位置に位置決めされていたが、バネ保持部１３の上面１３Ｊが下端面３１Ｋに当接しない構成であってもよい。この場合、従来通り、摺動部１２の上面１２Ｊをガイドスリーブ３０に当接する構成にしてもよい。 (4) In the above embodiment, the upper surface 13J of the spring holding portion 13 comes into contact with the lower end surface 31K of the valve body supporting portion 31, so that the valve body 11 is positioned at the fully open position, but the upper surface of the spring holding portion 13 is located. The configuration may be such that the 13J does not abut on the lower end surface 31K. In this case, as in the conventional case, the upper surface 12J of the sliding portion 12 may be configured to abut on the guide sleeve 30.

（５）上記実施形態では、ガイドスリーブ３０のうち弁体支持部３１の全体が嵌合孔２３に嵌合される構成であったが、弁体支持部３１の一部のみが嵌合孔２３に嵌合される構成であってもよい。 (5) In the above embodiment, the entire valve body support portion 31 of the guide sleeve 30 is fitted into the fitting hole 23, but only a part of the valve body support portion 31 is fitted in the fitting hole 23. It may be configured to be fitted to.

（６）上記実施形態では、ガイドスリーブ３０のうち弁体支持部３１のみが嵌合孔２３に嵌合される構成であったが、プランジャー支持部３５も嵌合する構成であってもよい。 (6) In the above embodiment, only the valve body support portion 31 of the guide sleeve 30 is fitted into the fitting hole 23, but the plunger support portion 35 may also be fitted. ..

（７）上記実施形態では、第１流路２１と第２流路２２とが平行に形成されていたが、流路の形状は適宜変更することができる。また、第１流路２１と第２流路２２とが交差する場合、連絡流路２４を有さない構成であってもよい。 (7) In the above embodiment, the first flow path 21 and the second flow path 22 are formed in parallel, but the shape of the flow path can be changed as appropriate. Further, when the first flow path 21 and the second flow path 22 intersect, the configuration may not have the connecting flow path 24.

１０ 電磁弁
１１ 弁体
１２ 摺動部
１３ バネ保持部
１４ 弁座
２０ ボディ
２３ 嵌合孔
２５ 内部流路
２７ 弁孔
２７Ｍ 開口溝
２８ 収容部
３０ ガイドスリーブ
３１ 弁体支持部
３５ プランジャー支持部
４０ プランジャー
４５ 圧縮コイルバネ
６０ 電磁コイル10 Solenoid valve 11 Valve body 12 Sliding part 13 Spring holding part 14 Valve seat 20 Body 23 Fitting hole 25 Internal flow path 27 Valve hole 27M Opening groove 28 Accommodation part 30 Guide sleeve 31 Valve body support part 35 Plunger support part 40 Plunger 45 compression coil spring 60 solenoid coil

Claims (4)

流体が通過する内部流路の途中に弁孔が設けられたボディと、
前記弁孔を開閉する弁体と、
前記ボディに固定されて、前記弁体の一端側を直動可能に支持するスリーブと、を有する電磁弁であって、
前記弁体には、前記スリーブの内側面に摺動して前記弁体の移動方向を規制する摺動部と、前記摺動部の下方で前記弁孔の開口縁との間に挟まれるバネを保持するバネ保持部とが形成され、
前記バネ保持部は、前記摺動部よりも外側に張り出し、
前記弁体が最も大きく開いた状態である全開位置に配置されたときに、前記ボディのうち前記内部流路の内側面の上端と、前記バネ保持部の下面とが同じ高さに位置する電磁弁。 A body with a valve hole in the middle of the internal flow path through which the fluid passes,
A valve body that opens and closes the valve hole,
A solenoid valve having a sleeve fixed to the body and movably supporting one end side of the valve body.
The valve body has a spring sandwiched between a sliding portion that slides on the inner surface of the sleeve to regulate the moving direction of the valve body and an opening edge of the valve hole below the sliding portion. A spring holding part is formed to hold the
The spring holding portion projects outward from the sliding portion ,
When the valve body is placed in the fully open position where it is in the most open state, the upper end of the inner surface of the internal flow path of the body and the lower surface of the spring holding portion are located at the same height. valve. 請求項１に記載の電磁弁であって、
前記ボディには、前記スリーブの少なくとも一部が嵌合される嵌合孔が形成され、
前記バネ保持部は、前記嵌合孔の内径よりも小さい電磁弁。 The solenoid valve according to claim 1.
The body is formed with a fitting hole into which at least a part of the sleeve is fitted.
The spring holding portion is a solenoid valve smaller than the inner diameter of the fitting hole. 請求項1又は２に記載の電磁弁であって、
前記弁体が最も大きく開いた状態である全開位置に配置されたときに、前記スリーブの下端面に当接する電磁弁。 The solenoid valve according to claim 1 or 2.
A solenoid valve that abuts on the lower end surface of the sleeve when the valve body is placed in the fully open position, which is the most open state. 請求項１乃至３の何れか１の請求項に記載の電磁弁であって、
前記バネは、前記弁体が開位置に配されるように付勢している電磁弁。 The solenoid valve according to any one of claims 1 to 3 .
The spring is a solenoid valve that urges the valve body to be arranged in an open position.
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JP2001124440A (en) 1999-08-18 2001-05-11 Pacific Ind Co Ltd Refrigerant channel switching valve
JP2001124229A (en) 1999-10-29 2001-05-11 Pacific Ind Co Ltd Solenoid valve
JP2007092826A (en) 2005-09-28 2007-04-12 Fuji Koki Corp Pilot type solenoid valve
JP2013029178A (en) 2011-07-29 2013-02-07 Tgk Co Ltd Solenoid valve
JP2017160983A (en) 2016-03-09 2017-09-14 サンデン・オートモーティブクライメイトシステム株式会社 Solenoid valve, refrigerator with solenoid valve and vehicular air conditioner with refrigerator
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