JPH0710911U - solenoid valve - Google Patents
solenoid valveInfo
- Publication number
- JPH0710911U JPH0710911U JP4012793U JP4012793U JPH0710911U JP H0710911 U JPH0710911 U JP H0710911U JP 4012793 U JP4012793 U JP 4012793U JP 4012793 U JP4012793 U JP 4012793U JP H0710911 U JPH0710911 U JP H0710911U
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- Prior art keywords
- valve
- movable core
- coil
- seal
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Magnetically Actuated Valves (AREA)
- Electromagnets (AREA)
Abstract
(57)【要約】
【目的】 コイルの中空部に、その中空部を液密にする
有底筒状のシール筒を配設した電磁弁において、ヨーク
及び可動コア間の磁路からシール部材を排除して磁気抵
抗の減少を図り、且つ可動コア、これに連結した弁の可
動部材、及び弁の固定部材の同軸性を高精度で確保す
る。
【構成】 弁筒１２（弁の固定部材）に連設した磁性体
の案内筒１７をシール部材１８を介してシール筒８の内
周面に嵌合すると共にヨーク体９に接続し、この案内筒
１７に、弁体１４（弁の可動部材）に連結する可動コア
２５を摺動自在に嵌合する。
(57) [Abstract] [Purpose] In a solenoid valve having a bottomed cylindrical seal tube that makes the hollow section liquid-tight in the hollow section of the coil, a seal member is provided from the magnetic path between the yoke and the movable core. The magnetic resistance is eliminated to reduce the magnetic resistance, and the coaxiality of the movable core, the movable member of the valve connected to the movable core, and the fixed member of the valve is ensured with high accuracy. [Structure] A guide tube 17 made of a magnetic material and connected to a valve tube 12 (a valve fixing member) is fitted to an inner peripheral surface of a seal tube 8 via a seal member 18 and connected to a yoke body 9 to guide the guide. A movable core 25 connected to the valve body 14 (movable member of the valve) is slidably fitted into the cylinder 17.
Description
【０００１】[0001]
本考案は、流路の開閉、切換に用いられる電磁弁に関し、特に、コイルを収容 する磁性体のコイルケースの一端を弁を収容する弁支持体に固着し、同ケースの 他端にはコイルの中空部に臨む固定コアを連設し、コイルの中空部に非磁性体で 閉塞端壁を有するカップ状のシール筒を配設し、またこのシール筒内には、コイ ルの励磁により前記閉塞端壁を介し固定コアに吸着されて弁の可動部材を作動す る可動コアを配設した電磁弁の改良に関する。 The present invention relates to an electromagnetic valve used for opening / closing and switching a flow path, and more particularly, one end of a coil case made of a magnetic material that houses a coil is fixed to a valve support body that houses the valve, and the other end of the case has a coil. A fixed core facing the hollow part of the coil is connected in series, and a cup-shaped seal cylinder having a closed end wall made of a non-magnetic material is arranged in the hollow part of the coil. The present invention relates to an improvement of a solenoid valve provided with a movable core that is attracted to a fixed core via a closed end wall to operate a movable member of the valve.
【０００２】[0002]
かゝる電磁弁は、例えば実公平５−２１８４７号公報に開示されているように 、既に知られており、それを図４に示す。同図から明らかなように、コイル０５ を収容するコイルケース０６の一端には、弁支持体０１０に接合されるヨーク体 ０９が一体に形成されている。コイル０５の中空部に配設されるシール筒０８は 開放端にフランジ０８ｂを有し、このフランジ０８ｂをシール部材０１８を介し てヨーク体０９の内側面に当接させている。また可動コア０２５はシール筒０８ の内周面に摺動自在に嵌合され、この可動コア０２５に連設された弁体０１４（ 弁の可動部材）と協働する弁座体０１２（弁の固定部材）は弁支持体０１０に装 着される。 Such a solenoid valve is already known as disclosed in, for example, Japanese Utility Model Publication No. 5-21847, and it is shown in FIG. As is clear from the figure, a yoke body 09 joined to the valve support body 010 is integrally formed at one end of the coil case 06 that houses the coil 05. The seal cylinder 08 arranged in the hollow portion of the coil 05 has a flange 08b at the open end, and the flange 08b is brought into contact with the inner surface of the yoke body 09 via the seal member 018. The movable core 025 is slidably fitted to the inner peripheral surface of the seal cylinder 08, and cooperates with the valve body 014 (movable member of the valve) continuously provided on the movable core 025. The fixed member) is attached to the valve support 010.
【０００３】 このような構成によれば、シール筒０８及びシール部材０１８によりコイル０ ５の中空部を液密にして可動コア０２５側からコイル０５側への流体の漏洩を防 止することができる。According to such a configuration, the hollow portion of the coil 05 can be made liquid-tight by the seal cylinder 08 and the seal member 018 to prevent fluid leakage from the movable core 025 side to the coil 05 side. .
【０００４】[0004]
しかしながら、上記構成には次のような欠点がある。 However, the above configuration has the following drawbacks.
【０００５】 ヨーク体０９には、シール部材０１８を装着する環状溝が形成されるため 、ヨーク体０９に形成される磁路にシール部材０１８が介入して、ヨーク体０９ の磁気抵抗を増加させ、吸引力を低下させる。Since the annular groove for mounting the seal member 018 is formed in the yoke body 09, the seal member 018 intervenes in the magnetic path formed in the yoke body 09 to increase the magnetic resistance of the yoke body 09. , Reduce the suction power.
【０００６】 可動コア０２５の摺動をシール筒０８の内周面で案内するようにしたこと から、ヨーク体０９及び可動コア０２５間に大なる空隙を設けざるを得ず、この 空隙によりヨーク体０９及び可動コア０２５間の磁気抵抗が増加し、吸引力を低 下させる。Since the sliding of the movable core 025 is guided by the inner peripheral surface of the seal cylinder 08, a large gap must be provided between the yoke body 09 and the movable core 025. 09 and the movable core 025 increase the magnetic resistance, which reduces the attractive force.
【０００７】 弁体０１４はシール筒０８に嵌合した可動コア０２５に連結され、弁座体 ０１２は弁支持体０１０に装着されるので、弁体０１４及び弁座体０１２の同軸 精度を確保することが困難である。Since the valve body 014 is connected to the movable core 025 fitted in the seal cylinder 08 and the valve seat body 012 is mounted on the valve support body 010, the coaxial accuracy of the valve body 014 and the valve seat body 012 is secured. Is difficult.
【０００８】 本考案は、このような従来の欠点をすべて解消した前記電磁弁を提供すること を目的とする。It is an object of the present invention to provide the solenoid valve that eliminates all of the conventional drawbacks.
【０００９】[0009]
上記目的を達成するために、本考案は、弁支持体に装着された弁の固定部材に 、シール筒の内周面にシール部材を介して嵌合する磁性体の案内筒を連設し、こ の案内筒をヨーク体を介してコイルケースの一端に接続し、この案内筒の内周面 に可動コアを摺動自在に嵌合したことを第１の特徴とする。 In order to achieve the above-mentioned object, the present invention has a guide member made of a magnetic material, which is fitted to an inner peripheral surface of a seal cylinder via a seal member, in a fixed member of a valve mounted on a valve support body. The first feature is that the guide cylinder is connected to one end of the coil case via a yoke body, and the movable core is slidably fitted to the inner peripheral surface of the guide cylinder.
【００１０】 また本考案は、上記特徴に加えて、シール筒の閉塞端壁に、可動コアが固定コ アへの吸着時に当接する小突起を形成したことを第２の特徴とする。In addition to the above-mentioned features, the present invention has a second feature that a small protrusion is formed on the closed end wall of the seal cylinder, which the movable core abuts when the movable core is attracted to the fixed core.
【００１１】[0011]
以下、図面により本考案の実施例について説明する。 An embodiment of the present invention will be described below with reference to the drawings.
【００１２】 図１及び図２は本考案をスプール型の電磁弁に適用した第１実施例を示す。図 １において、電磁弁１は、電磁アクチュエータ２と弁ユニット３とからなってい る。その電磁アクチュエータ２は、ボビン４に巻装されたコイル５と、これを収 容する磁性体のコイルケース６とを備える。コイルケース６は一端に閉塞端壁６ ａを有すると共に他端を開放した有底円筒状をなしており、その閉塞端壁６ａの 中心部は中空のカップ状をなす固定コア７に形成される。即ち、コイルケース６ 及び固定コア７はプレス加工により一体成形される。そして、その固定コア７は コイル５の中空部に突入するようボビン４の内周面にその中間深さまで嵌合され る。またボビン４の残余の内周面にはシール筒８が嵌合される。このシール筒８ は合成樹脂、ステンレス鋼等から成形された非磁性体であって、一端に閉塞端壁 ８ａを有するカップ状をなし、その閉塞端壁８ａは前記固定コア７の端面に重ね られる。閉塞端壁８ａには、その内面に突出する１または複数個の小突起３１が 形成される（図２参照）。1 and 2 show a first embodiment in which the present invention is applied to a spool type solenoid valve. In FIG. 1, the solenoid valve 1 comprises an electromagnetic actuator 2 and a valve unit 3. The electromagnetic actuator 2 includes a coil 5 wound around a bobbin 4, and a coil case 6 made of a magnetic material that accommodates the coil 5. The coil case 6 has a closed-end cylindrical shape having a closed end wall 6 a at one end and an open other end, and the central portion of the closed end wall 6 a is formed into a hollow cup-shaped fixed core 7. . That is, the coil case 6 and the fixed core 7 are integrally formed by press working. Then, the fixed core 7 is fitted to the inner peripheral surface of the bobbin 4 to the intermediate depth so as to project into the hollow portion of the coil 5. A seal cylinder 8 is fitted on the remaining inner peripheral surface of the bobbin 4. The seal cylinder 8 is a non-magnetic material formed of synthetic resin, stainless steel, or the like, and has a cup shape having a closed end wall 8a at one end, and the closed end wall 8a is superposed on the end surface of the fixed core 7. . The closed end wall 8a is formed with one or a plurality of small protrusions 31 projecting on the inner surface thereof (see FIG. 2).
【００１３】 コイルケース６の開放端には非磁性体のヨーク体９が接合され、これによって ボビン４及びシール筒８がコイルケース６内に保持される。A non-magnetic yoke body 9 is joined to the open end of the coil case 6, whereby the bobbin 4 and the seal cylinder 8 are held in the coil case 6.
【００１４】 また弁ユニット３は、外周に複数の接続ポートＰ1 〜Ｐ5 を有する弁支持体１ ０と、その接続ポートＰ1 〜Ｐ5 の連通、遮断を制御するスプール弁１５とから なっており、その弁１５は、弁支持体１０の有底円筒状ハウジング孔１１に装着 される弁筒１２（固定部材）と、この弁筒１２の弁孔１３に摺動自在に密合する スプール弁体１４（可動部材）とを備える。弁支持体１０は非磁性体であって、 その一端には、コイルケース６の開放端のフランジ６ｂが前記ヨーク体９を挟ん だ状態でボルト１６により固着される。Further, the valve unit 3 is composed of a valve support body 10 having a plurality of connection ports P 1 to P 5 on its outer circumference, and a spool valve 15 which controls communication and cutoff of the connection ports P 1 to P 5. The valve 15 has a valve cylinder 12 (fixing member) mounted in the bottomed cylindrical housing hole 11 of the valve support 10 and a spool slidably fitted in the valve hole 13 of the valve cylinder 12. The valve body 14 (movable member). The valve support body 10 is a non-magnetic body, and a flange 6b at the open end of the coil case 6 is fixed to one end of the valve support body 10 by a bolt 16 with the yoke body 9 sandwiched therebetween.
【００１５】 弁筒１２は磁性体であって、その一端は、段部１９を形成しつゝ突出する案内 筒１７が一体に形成され、この案内筒１７は、前記ヨーク体９に接しつゝそれを 貫通して前記シール筒８の内周面にシール部材１８を介して嵌合される。したが って案内筒１７は、ヨーク体９を介してコイルケース６に接続される。また弁筒 １２は、段部１９をヨーク体９に当接させた状態で保持されるもので、その保持 のために、ハウジング孔１１の底部に画成された油室２０には、弁筒１３をヨー ク体９側へ付勢する保持ばね２１が収納される。The valve cylinder 12 is a magnetic body, and one end thereof is integrally formed with a guide cylinder 17 that forms a stepped portion 19 and protrudes. The guide cylinder 17 is in contact with the yoke body 9. It penetrates through and is fitted into the inner peripheral surface of the seal cylinder 8 via a seal member 18. Therefore, the guide cylinder 17 is connected to the coil case 6 via the yoke body 9. Further, the valve cylinder 12 is held in a state in which the step portion 19 is in contact with the yoke body 9, and in order to hold the step portion 19 in the oil chamber 20 defined at the bottom of the housing hole 11, the valve cylinder 12 is retained. A holding spring 21 for urging 13 toward the yoke 9 is housed.
【００１６】 案内筒１７には、シール筒８内に開口する案内孔２２が形成されており、この 案内孔２２は段部２３を介して前記弁孔１３に連なる。また弁筒１２には、前記 弁孔１３を前記接続ポートＰ1 〜Ｐ4 に連通する複数の通孔Ｈ1 〜Ｈ4 が設けら れる。A guide hole 22 that opens into the seal cylinder 8 is formed in the guide cylinder 17, and the guide hole 22 is connected to the valve hole 13 via a step portion 23. Further, the valve cylinder 12 is provided with a plurality of through holes H 1 to H 4 for communicating the valve hole 13 with the connection ports P 1 to P 4 .
【００１７】 図示例ではスプール弁体１４は磁性体であって、その一端には、前記案内筒１ ７に摺動自在に嵌合する可動コア２５が小径の頸部２６を介して一体に連設され 、この可動コア２５は前記シール筒８の閉塞端壁８ａを挟んで固定コア７に対向 する。In the illustrated example, the spool valve body 14 is a magnetic body, and a movable core 25 slidably fitted into the guide cylinder 17 is integrally connected to one end of the spool valve body 14 via a small-diameter neck portion 26. The movable core 25 faces the fixed core 7 with the closed end wall 8a of the seal cylinder 8 interposed therebetween.
【００１８】 頸部２６のスプール弁体１４側端部には前記段部２３に当接するサークリップ がストッパ２７として係止され、このストッパ２７を前記段部２３との当接方向 へ付勢する戻しばね２８がシール筒８及び可動コア２５間に縮設される。而して 、ストッパ２７が段部２３に当接するとき、可動コア２５とシール筒８の閉塞端 壁８ａ（正確には小突起３１）との間に弁ストロークに対応するエアギャップが 生じる。At the end of the neck portion 26 on the spool valve body 14 side, a circlip that contacts the step portion 23 is locked as a stopper 27, and the stopper 27 is urged in the contact direction with the step portion 23. The return spring 28 is contracted between the seal cylinder 8 and the movable core 25. Thus, when the stopper 27 comes into contact with the step portion 23, an air gap corresponding to the valve stroke is formed between the movable core 25 and the closed end wall 8a of the seal cylinder 8 (more precisely, the small protrusion 31).
【００１９】 スプール弁体１４及び可動コア２５には、それらの中心を貫通する一連の縦孔 ２９が穿設され、また頸部２６には、縦孔２９と交差する十字状の横孔３０が頸 部２６外周面に開口するように穿設される。The spool valve element 14 and the movable core 25 are provided with a series of vertical holes 29 penetrating their centers, and the neck 26 is provided with a cross-shaped horizontal hole 30 intersecting the vertical holes 29. The neck 26 is formed so as to open to the outer peripheral surface.
【００２０】 尚、前記油室２０は接続ポートＰ5 を介して図示しないリザーバに連通される 。The oil chamber 20 is connected to a reservoir (not shown) via a connection port P 5 .
【００２１】 次にこの実施例の作用について説明する。Next, the operation of this embodiment will be described.
【００２２】 コイル５に通電すれば、その励磁により生じた磁束が、図１に矢印で示すよう に、コイルケース６、ヨーク体９、案内筒１７、可動コア２５、固定コア７、コ イルケース６へと順次走り、それに伴い生じた吸引力により可動コア２５が固定 コア７に吸着されるので、それと同時にスプール弁体１４が作動して接続ポート Ｐ1 〜Ｐ5 の連通、遮断状態が切換えられる。When the coil 5 is energized, the magnetic flux generated by the excitation of the coil 5 has a coil case 6, a yoke body 9, a guide cylinder 17, a movable core 25, a fixed core 7 and a coil case 6 as shown by arrows in FIG. The movable core 25 is attracted to the fixed core 7 by the suction force generated therewith, and at the same time, the spool valve element 14 operates to switch the connection and disconnection states of the connection ports P 1 to P 5. .
【００２３】 このとき、固定コア７及び可動コア２５間には非磁性体のシール筒８の閉塞端 壁８ａが介在しているので、次にコイル５が消磁されたとき、固定コア５及び可 動コア７間の残留磁気は上記閉塞端壁８ａにより早期に解消される。また可動コ ア２５は、固定コア７への吸着時、閉塞端壁８ａの小突起３１に当接するので、 それらの当接面積は極めて小さく、それらの当接面間に介在する油の粘着力も極 めて小さいものとなる。以上の結果、コイル２５が消磁されると、可動コア２５ は戻しばね２８の弾発力をもって直ちに後退してスプール弁体１４を原位置に素 早く復帰させることができる。At this time, since the closed end wall 8a of the non-magnetic seal tube 8 is interposed between the fixed core 7 and the movable core 25, when the coil 5 is demagnetized next time, the fixed core 5 and the movable core 25 are closed. The residual magnetism between the moving cores 7 is eliminated early by the closed end wall 8a. Further, since the movable core 25 comes into contact with the small protrusions 31 of the closed end wall 8a when the movable core 25 is attracted to the fixed core 7, the contact area thereof is extremely small, and the adhesive force of the oil interposed between these contact surfaces is also small. It will be extremely small. As a result of the above, when the coil 25 is demagnetized, the movable core 25 can be immediately retracted by the elastic force of the return spring 28 to quickly return the spool valve element 14 to the original position.
【００２４】 このような可動コア２５及びスプール弁体１４の作動中、シール筒８内部、案 内筒１７内部及びハウジング孔１１の油室２０の相互間では、可動コア２５及び スプール弁体１４の縦孔２９及び横孔３０を通して流体が流通するので、可動コ ア２５等の作動は流体に何等妨げられない。During the operation of the movable core 25 and the spool valve body 14 as described above, the movable core 25 and the spool valve body 14 are provided between the inside of the seal cylinder 8, the interior cylinder 17 and the oil chamber 20 of the housing hole 11. Since the fluid flows through the vertical holes 29 and the horizontal holes 30, the operation of the movable core 25 or the like is not hindered by the fluid.
【００２５】 しかもシール筒８内部は、その内周面とそれに嵌合する案内筒１７との間に介 装したシール部材１８により液密が保たれているので、可動コア２５側からコイ ル５側への流体の漏洩を防ぐことができる。Moreover, since the inside of the seal cylinder 8 is kept liquid-tight by the seal member 18 interposed between the inner peripheral surface of the seal cylinder 8 and the guide cylinder 17 fitted thereto, the coil 5 is moved from the movable core 25 side. It is possible to prevent the fluid from leaking to the side.
【００２６】 また可動コア２５は、ヨーク体９に接続した磁性体の案内筒１７に摺動自在に 嵌合しているので、ヨーク体９及び可動コア２５間には磁気抵抗となる大なる空 隙が介在せず、また前記シール部材１８はヨーク体９及び可動コア２５間での磁 路の形成を何等妨げないから、全体として磁気抵抗が極めて小さく、両コア７， ２５間に大なる吸引力を発生させることができる。Further, since the movable core 25 is slidably fitted to the magnetic guide tube 17 connected to the yoke body 9, there is a large space between the yoke body 9 and the movable core 25, which becomes a magnetic resistance. Since there is no gap and the seal member 18 does not hinder the formation of a magnetic path between the yoke body 9 and the movable core 25, the magnetic resistance is extremely small as a whole, and a large suction is exerted between the cores 7 and 25. Can generate force.
【００２７】 さらに、可動コア２５の摺動を案内する案内筒１７は、スプール弁体１４と協 働する弁筒１２に連設されているので、可動コア２５、スプール弁体１４、及び 弁筒１２の同軸性を高精度に得ることができ、スプール弁体１４を弁筒１２内で スムーズに作動させることができる。Further, since the guide cylinder 17 that guides the sliding movement of the movable core 25 is connected to the valve cylinder 12 that cooperates with the spool valve body 14, the movable core 25, the spool valve body 14, and the valve cylinder. The coaxiality of 12 can be obtained with high precision, and the spool valve element 14 can be operated smoothly in the valve cylinder 12.
【００２８】 図３は本考案の第２実施例を示す。同図において、電磁弁１の電磁アクチュエ ータ２は、コイルケース６の端壁６ａ中心部に、それと別体の固定コア７を固着 した点を除けば前実施例の電磁アクチュエータ２と同様の構成である。FIG. 3 shows a second embodiment of the present invention. In the figure, the electromagnetic actuator 2 of the solenoid valve 1 is similar to the electromagnetic actuator 2 of the previous embodiment except that a fixed core 7 which is a separate body from the coil case 6 is fixed to the center of the end wall 6a. It is a composition.
【００２９】 一方、弁ユニット３の弁支持体１０には開閉弁１１５が設けられる。この開閉 弁１１５は、弁支持体１０のハウジング孔１１に装着された弁座体１１２（固定 部材）と、この弁座体１１２の中心部の弁座３２に対し開閉動作をする環状弁体 １１４（可動部材）とから構成され、その弁体１１４の開閉により弁支持体１０ の第１ポートＰ11と弁座体１１２の第２ポートＰ12間の連通、遮断が行われる。On the other hand, the valve support 10 of the valve unit 3 is provided with an opening / closing valve 115. This on-off valve 115 is a ring-shaped valve body 114 that opens and closes with respect to a valve seat body 112 (fixing member) mounted in the housing hole 11 of the valve support body 10 and the valve seat 32 at the center of the valve seat body 112. (Movable member), the valve body 114 is opened and closed to connect and disconnect the first port P 11 of the valve support body 10 and the second port P 12 of the valve seat body 112.
【００３０】 弁座体１１２には案内筒１７が一体に形成され、その案内筒１７は前実施例と 同様に、シール部材１８を介してシール筒８の内周面に嵌合すると共に、ヨーク 体９を介してコイルケース６に接続される。また弁体１１４は、案内筒１７に摺 動自在に嵌合する可動コア２５に突設された弁杆３３に固着される。A guide cylinder 17 is formed integrally with the valve seat 112, and the guide cylinder 17 is fitted to the inner peripheral surface of the seal cylinder 8 via the seal member 18 as in the previous embodiment, and the yoke is formed. It is connected to the coil case 6 via the body 9. Further, the valve body 114 is fixed to a valve rod 33 protruding from the movable core 25 that is slidably fitted in the guide cylinder 17.
【００３１】 その他の構成は前実施例と同様であり、前実施例と対応する部分にはそれと同 一の符号を付す。Other configurations are the same as those in the previous embodiment, and the portions corresponding to those in the previous embodiment are designated by the same reference numerals.
【００３２】 而して、この実施例においては、可動コア２５の往復動により開閉弁１１５を 開閉作動させる点を除けば、前実施例と同様の作用効果を奏する。Thus, in this embodiment, the same operational effects as the previous embodiment are achieved except that the opening / closing valve 115 is opened / closed by the reciprocating motion of the movable core 25.
【００３３】 上記各実施例においては、本考案の要旨を逸脱することなく種々の設計変更が 可能である。例えば、ヨーク体９を案内筒１７に一体に形成することもできる。 またシール筒８の端壁８ａの小突起３１は、図示のような円形に限らず、十字形 など自由に形状を選ぶことができる。In each of the above embodiments, various design changes can be made without departing from the gist of the present invention. For example, the yoke body 9 may be formed integrally with the guide cylinder 17. Further, the small protrusion 31 of the end wall 8a of the seal tube 8 is not limited to the circular shape as shown in the drawing, and the shape can be freely selected such as a cross shape.
【００３４】[0034]
以上のように本考案の第１の特徴によれば、弁支持体に装着された弁の固定部 材に、シール筒の内周面にシール部材を介して嵌合する磁性体の案内筒を連設し 、この案内筒をヨーク体を介してコイルケースの一端に接続し、この案内筒の内 周面に可動コアを摺動自在に嵌合したので、ヨーク体及び可動コア間から磁気抵 抗となる大なる空隙を排除することができ、その上、ヨーク体及び可動コア間の 磁路にシール部材を介入させないで済む。したがってヨーク体及び可動コア間に 磁束が効率良く通り、固定及び可動コア間に生じる吸引力の増大を図ることがで きる。また可動コアの摺動を案内する案内筒が弁の固定部材に連設されたことか ら、可動コア、弁の可動部材及び弁の固定部材の同軸性を高精度で確保して、弁 をスムーズに作動させることができる。 As described above, according to the first feature of the present invention, the guide tube made of a magnetic material is fitted to the fixing member of the valve mounted on the valve support body on the inner peripheral surface of the seal tube via the seal member. The guide cylinders are connected in series and connected to one end of the coil case via the yoke body, and the movable core is slidably fitted on the inner peripheral surface of the guide cylinder. It is possible to eliminate a large air gap that acts as an obstacle, and further, it is not necessary to interpose a seal member in the magnetic path between the yoke body and the movable core. Therefore, the magnetic flux efficiently passes between the yoke body and the movable core, and the attraction force generated between the fixed and movable cores can be increased. In addition, since the guide tube that guides the sliding of the movable core is connected to the fixed member of the valve, the coaxiality of the movable core, the movable member of the valve, and the fixed member of the valve is ensured with high accuracy, and the valve is fixed. It can be operated smoothly.
【００３５】 また本考案の第２の特徴によれば、シール筒の閉塞端壁に、可動コアが固定コ アへの吸着時に当接する小突起を形成したので、固定及び可動コア間の残留磁気 の解消と共に、可動コアの前記閉塞端壁への流体による粘着をも防止することが でき、コイルの消磁時、可動コアの往動を素早く行うことができる。Further, according to the second aspect of the present invention, since the movable core has a small projection formed on the closed end wall of the seal cylinder, which abuts when the movable core is attracted to the fixed core, the residual magnetism between the fixed core and the movable core is reduced. At the same time, it is possible to prevent fluid from adhering to the closed end wall of the movable core, and to quickly move the movable core forward when the coil is demagnetized.
【図１】本考案の第１実施例の縦断面図FIG. 1 is a longitudinal sectional view of a first embodiment of the present invention.
【図２】図１の２−２線断面図FIG. 2 is a sectional view taken along line 2-2 of FIG.
【図３】本考案の第２実施例の縦断面図FIG. 3 is a vertical sectional view of a second embodiment of the present invention.
【図４】従来の電磁弁の縦断面図FIG. 4 is a vertical sectional view of a conventional solenoid valve.
１ 電磁弁 ５ コイル ６ コイルケース ７ 固定コア ８ シール筒 ８ａ 閉塞端壁 ９ ヨーク体 １０ 弁支持体 １２，１１２ 弁の固定部材 １４，１１４ 弁の可動部材 １５，１１５ 弁 １７ 案内筒 １８ シール部材 ２５ 可動コア ３１ 小突起 1 Solenoid Valve 5 Coil 6 Coil Case 7 Fixed Core 8 Seal Cylinder 8a Closed End Wall 9 Yoke Body 10 Valve Support 12,112 Valve Fixing Member 14,114 Valve Movable Member 15,115 Valve 17 Guide Tube 18 Sealing Member 25 Movable core 31 Small protrusion
Claims (2)
ケース（６）の一端を弁（１５，１１５）を収容する弁
支持体（１０）に固着し、同ケース（６）の他端にはコ
イル（５）の中空部に臨む固定コア（７）を連設し、コ
イル（５）の中空部に非磁性体で閉塞端壁（８ａ）を有
するカップ状のシール筒（８）を配設し、またこのシー
ル筒（８）内には、コイル（５）の励磁により前記閉塞
端壁（８ａ）を介し固定コア（７）に吸着されて弁（１
５，１１５）の可動部材（１４，１１４）を作動する可
動コア（２５）を配設した電磁弁において、 弁支持体（１０）に装着された弁（１５，１１５）の固
定部材（１２，１１２）に、シール筒（８）の内周面に
シール部材（１８）を介して嵌合する磁性体の案内筒
（１７）を連設し、この案内筒（１７）をヨーク体
（９）を介してコイルケース（６）の一端に接続し、こ
の案内筒（１７）の内周面に可動コア（２５）を摺動自
在に嵌合したことを特徴とする電磁弁。1. A magnetic coil case (6) for accommodating a coil (5) is fixed at one end to a valve support (10) for accommodating a valve (15, 115) and the other end of the case (6). A fixed core (7) facing the hollow part of the coil (5) is connected to the coil (5), and a cup-shaped seal cylinder (8) having a closed end wall (8a) made of a non-magnetic material is provided in the hollow part of the coil (5). In the seal cylinder (8), the valve (1) is attracted to the fixed core (7) through the closed end wall (8a) by exciting the coil (5).
In a solenoid valve provided with a movable core (25) for operating the movable members (14, 114) of a valve (15, 115), a fixed member (12, 112), a guide tube (17) made of a magnetic material, which is fitted to the inner peripheral surface of the seal tube (8) via a seal member (18), is continuously provided, and the guide tube (17) is connected to the yoke body (9). A solenoid valve characterized in that the movable core (25) is slidably fitted to the inner peripheral surface of the guide cylinder (17) by being connected to one end of the coil case (6) via the.
（８）の閉塞端壁（８ａ）に、可動コア（２５）が固定
コア（７）への吸着時に当接する小突起（３１）を形成
したことを特徴とする、電磁弁。2. The small protrusion (31) according to claim 1, wherein the movable core (25) is in contact with the fixed core (7) when the movable core (25) is attracted to the closed end wall (8a) of the seal cylinder (8). A solenoid valve characterized by being formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993040127U JP2594330Y2 (en) | 1993-07-22 | 1993-07-22 | solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993040127U JP2594330Y2 (en) | 1993-07-22 | 1993-07-22 | solenoid valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0710911U true JPH0710911U (en) | 1995-02-14 |
| JP2594330Y2 JP2594330Y2 (en) | 1999-04-26 |
Family
ID=12572153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993040127U Expired - Fee Related JP2594330Y2 (en) | 1993-07-22 | 1993-07-22 | solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2594330Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003166663A (en) * | 2001-11-28 | 2003-06-13 | Aisin Seiki Co Ltd | Electromagnetic valve |
| JP2006258154A (en) * | 2005-03-16 | 2006-09-28 | Yokohama Rubber Co Ltd:The | Solenoid valve |
-
1993
- 1993-07-22 JP JP1993040127U patent/JP2594330Y2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003166663A (en) * | 2001-11-28 | 2003-06-13 | Aisin Seiki Co Ltd | Electromagnetic valve |
| JP2006258154A (en) * | 2005-03-16 | 2006-09-28 | Yokohama Rubber Co Ltd:The | Solenoid valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2594330Y2 (en) | 1999-04-26 |
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