JP2003185050A - Solenoid valve - Google Patents
Solenoid valveInfo
- Publication number
- JP2003185050A JP2003185050A JP2001383476A JP2001383476A JP2003185050A JP 2003185050 A JP2003185050 A JP 2003185050A JP 2001383476 A JP2001383476 A JP 2001383476A JP 2001383476 A JP2001383476 A JP 2001383476A JP 2003185050 A JP2003185050 A JP 2003185050A
- Authority
- JP
- Japan
- Prior art keywords
- elastic body
- iron core
- movable iron
- bobbin
- separating
- 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.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 220
- 239000000696 magnetic material Substances 0.000 claims abstract description 54
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 230000003449 preventive effect Effects 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 7
- 230000005389 magnetism Effects 0.000 abstract description 16
- 238000000034 method Methods 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 102100036738 Guanine nucleotide-binding protein subunit alpha-11 Human genes 0.000 description 1
- 101100283445 Homo sapiens GNA11 gene Proteins 0.000 description 1
Landscapes
- Magnetically Actuated Valves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電磁弁に関する。TECHNICAL FIELD The present invention relates to a solenoid valve.
【０００２】[0002]
【従来の技術】従来既知の電磁弁の一般的な構造を図３
に示す。筒状あるいは糸巻き状のボビン１０の外側にコ
イル１２が巻き付けられ、そのボビン１０の外側にアウ
ターヨーク１４が取り付けられる。ボビン１０の軸中心
位置に空間１６が形成され、その空間１６の一端側に固
定鉄心１８が備えられる。ボビン１０の空間１６内に可
動鉄心２０の一端が挿入され、その可動鉄心２０のボビ
ン１０より外部の先端位置に弁体２２が取り付けられ
る。ボビン１０の空間１６の内壁には円筒形のスリーブ
２４が備えられ、このスリーブ２４内を可動鉄心２０が
軸方向に自由に摺動する。このスリーブ２４は非磁性体
であり、このスリーブ２４によって可動鉄心２０とボビ
ン１０やアウターヨーク１４とは接触しないようになっ
ている。2. Description of the Related Art The general structure of a conventionally known solenoid valve is shown in FIG.
Shown in. A coil 12 is wound around the outside of the bobbin 10 having a tubular shape or a bobbin shape, and an outer yoke 14 is attached to the outside of the bobbin 10. A space 16 is formed at the axial center position of the bobbin 10, and a fixed iron core 18 is provided on one end side of the space 16. One end of the movable iron core 20 is inserted into the space 16 of the bobbin 10, and the valve body 22 is attached to the movable iron core 20 at a tip position outside the bobbin 10. A cylindrical sleeve 24 is provided on the inner wall of the space 16 of the bobbin 10, and the movable iron core 20 slides freely in the sleeve 24 in the axial direction. The sleeve 24 is a non-magnetic material, and the sleeve 24 prevents the movable iron core 20 from coming into contact with the bobbin 10 or the outer yoke 14.
【０００３】固定鉄心１８における可動鉄心２０と対向
する面には凹部２６が設けられ、一方、可動鉄心２０に
おける固定鉄心１８と対向する面にも凹部２８が設けら
れる。固定鉄心１６の凹部２４と可動鉄心２０の凹部２
６にスプリング２８を装着し、このスプリング３０によ
って可動鉄心２０を固定鉄心１６から離れる方向に付勢
している。コイル１２に通電することによって、可動鉄
心２０は固定鉄心１６側に移動させられ、可動鉄心２０
は固定鉄心１６に吸着させられる。可動鉄心２０が固定
鉄心１６に吸着させられた状態（図３）では、この電磁
弁に固定鉄心１８，アウターヨーク１４，可動鉄心２
０，スプリング２８，固定鉄心１８の順に磁気が流れる
磁気回路３２が形成される。A concave portion 26 is provided on the surface of the fixed iron core 18 facing the movable iron core 20, and a concave portion 28 is also provided on the surface of the movable iron core 20 facing the fixed iron core 18. The recess 24 of the fixed iron core 16 and the recess 2 of the movable iron core 20
A spring 28 is attached to 6, and the spring 30 biases the movable core 20 in a direction away from the fixed core 16. By energizing the coil 12, the movable iron core 20 is moved to the fixed iron core 16 side, and the movable iron core 20 is moved.
Are attracted to the fixed iron core 16. In the state where the movable iron core 20 is attracted to the fixed iron core 16 (FIG. 3), the fixed iron core 18, the outer yoke 14, and the movable iron core 2 are attached to the solenoid valve.
A magnetic circuit 32 through which magnetism flows is formed in the order of 0, the spring 28, and the fixed iron core 18.
【０００４】[0004]
【発明が解決しようとする課題】図３に示す電磁弁で
は、可動鉄心２０が摺接する非磁性体材料からなるスリ
ーブ２４を備えているため、このスリーブ２４によって
可動鉄心２０とアウターヨーク１４との接触は遮断され
ている。この結果、磁気回路３２において、アウターヨ
ーク１４から可動鉄心２０への途中にエアギャップが生
じて、磁気漏れが発生する。このため、可動鉄心２０を
固定鉄心１８に吸着保持するためにある程度大きな電流
が必要となり、コイル１２（ボビン１０）を大きくしな
ければならないという欠点があった。In the solenoid valve shown in FIG. 3, since the movable iron core 20 is provided with the sleeve 24 made of a non-magnetic material, the movable iron core 20 and the outer yoke 14 are connected by the sleeve 24. Contact is blocked. As a result, in the magnetic circuit 32, an air gap is generated midway from the outer yoke 14 to the movable iron core 20, and magnetic leakage occurs. Therefore, a certain amount of current is required to attract and hold the movable iron core 20 to the fixed iron core 18, and there is a drawback in that the coil 12 (bobbin 10) must be large.
【０００５】本発明は上記の点に鑑みてなされたもの
で、磁気回路の途中にエアギャップを生じないようにす
ることで、小電流で可動鉄心を移動させることを可能に
し、小型化を達成するようにした電磁弁を提供すること
を目的とするものである。The present invention has been made in view of the above points, and it is possible to move the movable iron core with a small current by preventing an air gap from being formed in the middle of the magnetic circuit, thereby achieving miniaturization. The purpose of the present invention is to provide a solenoid valve adapted to do so.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に本発明の電磁弁は、内部に空間を有する筒状のボビン
と、その筒状のボビンの外側に巻き付けたコイルと、前
記ボビンの空間の一端側においてボビンに固定される固
定鉄心と、前記ボビンの外側に取り付けられるアウター
ヨークと、前記ボビンの空間に一端を挿入するものであ
って前記コイルに通電することで前記固定鉄心に対して
近づく方向に変位する可動鉄心と、その可動鉄心を前記
固定鉄心から離れる方向に付勢する離間用弾性体と、前
記ボビンの空間より外部において前記可動鉄心に取付け
た弁体とを有する電磁弁において、前記可動鉄心に接触
する磁性体材料から成る弾性体受けを備え、前記離間用
弾性体を磁性体材料で構成し、その離間用弾性体の一端
を前記アウターヨークに接触させると共にその離間用弾
性体の他端を前記弾性体受けに接触させ、前記固定鉄心
と前記アウターヨークと前記離間用弾性体と前記弾性体
受けと前記可動鉄心とから成る磁気回路を形成するよう
にしたものである。In order to achieve the above object, a solenoid valve according to the present invention comprises a tubular bobbin having an internal space, a coil wound around the tubular bobbin, and a bobbin of the bobbin. A fixed iron core fixed to the bobbin at one end side of the space, an outer yoke attached to the outside of the bobbin, and one end of which is inserted into the space of the bobbin, and the coil is energized to the fixed iron core. Solenoid valve having a movable core that is displaced in a direction approaching the movable core, a separating elastic body that urges the movable core in a direction away from the fixed core, and a valve body that is attached to the movable core outside the space of the bobbin. In the above, an elastic body receiver made of a magnetic material that comes into contact with the movable iron core is provided, the separating elastic body is made of a magnetic material, and one end of the separating elastic body has the outer yo-yo. And the other end of the separating elastic body is brought into contact with the elastic body receiver to form a magnetic circuit including the fixed iron core, the outer yoke, the separating elastic body, the elastic body receiver, and the movable iron core. It is designed to be formed.
【０００７】本発明は更に、内部に空間を有する筒状の
ボビンと、その筒状のボビンの外側に巻き付けたコイル
と、前記ボビンの空間の一端側においてボビンに固定さ
れる固定鉄心と、前記ボビンの外側に取り付けられるア
ウターヨークと、前記ボビンの空間に一端を挿入するも
のであって前記コイルに通電することで前記固定鉄心に
対して近づく方向に変位する可動鉄心と、その可動鉄心
を前記固定鉄心から離れる方向に付勢する離間用弾性体
と、前記ボビンの空間より外部において前記可動鉄心に
取付けた弁体とを有する電磁弁において、前記可動鉄心
に接触しない磁性体材料から成る弾性体受けを備え、前
記離間用弾性体を磁性体材料で構成し、その離間用弾性
体の一端を前記アウターヨークに接触させると共にその
離間用弾性体の他端を前記弾性体受けに接触させ、前記
弾性体受けを前記弁体側に押圧するために前記可動鉄心
と前記弾性体受けにそれぞれ一端を接触する磁性体材料
から成る押圧用弾性体を備え、前記固定鉄心と前記アウ
ターヨークと前記離間用弾性体と前記弾性体受けと前記
押圧用弾性体と前記可動鉄心とから成る磁気回路を形成
するようにしたものである。The present invention further includes a cylindrical bobbin having a space therein, a coil wound around the cylindrical bobbin, a fixed iron core fixed to the bobbin at one end of the space of the bobbin, An outer yoke attached to the outside of the bobbin, a movable iron core, one end of which is inserted into the space of the bobbin, and which is displaced in a direction toward the fixed iron core by energizing the coil, and the movable iron core. In a solenoid valve having a separating elastic body that urges in a direction away from a fixed iron core and a valve body attached to the movable iron core outside the space of the bobbin, an elastic body made of a magnetic material that does not contact the movable iron core. A receiver, the separating elastic body is made of a magnetic material, and one end of the separating elastic body is brought into contact with the outer yoke, and the separating elastic body is And a fixed elastic body made of a magnetic material that makes one end contact with the movable core and the elastic body receiver in order to press the elastic body receiver toward the valve body side. A magnetic circuit including an iron core, the outer yoke, the separating elastic body, the elastic body receiver, the pressing elastic body, and the movable iron core is formed.
【０００８】[0008]
【発明の第一実施形態】次に本発明を図面に基づいて説
明する。図１は本発明の電磁弁の一実施形態を示す断面
図である。図３と同一符号は同一部材を示す。本発明の
電磁弁においては、ボビン１０より外側に位置する可動
鉄心２０の先端付近に、磁性体材料からなる弾性体受け
３４を取付ける。可動鉄心２０と弾性体受け３４とは直
接接触させるのが望ましいが、図示しない磁性体材料を
介在させても良い。この弾性体受け３４は、外径が可動
鉄心２０の外径より大きいものとし、形状は皿状である
のが望ましい。この弾性体受け３４の表面に防錆材によ
る被膜処理を施す。First Embodiment Next, the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of a solenoid valve of the present invention. The same reference numerals as those in FIG. 3 indicate the same members. In the electromagnetic valve of the present invention, the elastic body receiver 34 made of a magnetic material is attached near the tip of the movable iron core 20 located outside the bobbin 10. It is desirable that the movable iron core 20 and the elastic body receiver 34 be in direct contact with each other, but a magnetic material (not shown) may be interposed. The elastic body receiver 34 has an outer diameter larger than that of the movable iron core 20, and preferably has a dish shape. The surface of the elastic body receiver 34 is coated with a rust preventive material.
【０００９】アウターヨーク１４（ボビン１０より外側
に位置する可動鉄心２０に近い位置）と前記弾性体受け
３４との間に、それらに接触するように磁性体材料から
なる離間用弾性体３６を備える。この離間用弾性体３６
は可動鉄心２０の周囲に配置されるコイルスプリングが
望ましいが、それに限るものではない。この離間用弾性
体３６の表面に防錆材による被膜処理を施す。この離間
用弾性体３６は、弾性体受け３４をアウターヨーク１４
から離す方向に付勢することで、弾性体受け３４を取付
けた可動鉄心２０を固定鉄心１６から離す方向に付勢し
ている。離間用弾性体３６はアウターヨーク１４に直接
接触させるのが望ましいが、アウターヨーク１４と接触
する図示しない磁性体部材と接触させるようにしても良
い。本発明では従来と同様に、ボビン１０の空間１６の
内壁に円筒形のスリーブ２４を備え、そのスリーブ２４
で可動鉄心２０とアウターヨーク１４との接触を遮断す
るようにしているが、これに限るものではない。本発明
のその他の構成は、図３と同様かあるいは従来既知の電
磁弁の構成と同様のものとする。An elastic member 36 made of a magnetic material is provided between the outer yoke 14 (a position closer to the movable iron core 20 positioned outside the bobbin 10) and the elastic member receiver 34 so as to contact them. . This separating elastic body 36
Is preferably a coil spring arranged around the movable iron core 20, but is not limited thereto. The surface of the separating elastic body 36 is coated with a rust preventive material. The elastic body 36 for separating the elastic body 34 from the outer yoke 14
By urging the movable core 20 having the elastic body receiver 34 attached thereto, the movable core 20 is urged in the direction away from the fixed core 16. It is desirable that the separating elastic body 36 is brought into direct contact with the outer yoke 14, but it may be brought into contact with a magnetic member (not shown) that comes into contact with the outer yoke 14. In the present invention, as in the conventional case, a cylindrical sleeve 24 is provided on the inner wall of the space 16 of the bobbin 10, and the sleeve 24
Although the contact between the movable iron core 20 and the outer yoke 14 is blocked by the above, the invention is not limited to this. The other structure of the present invention is the same as that of FIG. 3 or the same as that of a conventionally known solenoid valve.
【００１０】以上のように構成した電磁弁では、コイル
１２に通電することによって、可動鉄心２０は離間用弾
性体３６に抗して固定鉄心１６に吸着される。可動鉄心
２０と固定鉄心１６とが吸着した状態において、図１に
示す電磁弁に、固定鉄心１８，アウターヨーク１４，離
間用弾性体３６，弾性体受け３４，可動鉄心２０，固定
鉄心１８の順に磁気が流れる磁気回路３８が形成され
る。この磁気回路３８では、アウターヨーク１４から可
動鉄心２０までの間は、磁性体材料からなる離間用弾性
体３６と磁性体からなる弾性体受け３４とを介して磁気
が流れ、エアギャップが生じることはない。即ち、磁気
回路３８にはエアギャップが生じない。このように、本
発明に係る電磁弁では、磁気回路３８にエアギャップを
生じないようにしたので、小電流で可動鉄心２０を動か
すことが可能となる。この結果、電磁弁の小型化を図る
ことができる。In the solenoid valve configured as described above, the movable iron core 20 is attracted to the fixed iron core 16 against the separating elastic body 36 by energizing the coil 12. In the state where the movable iron core 20 and the fixed iron core 16 are attracted to each other, the solenoid valve shown in FIG. 1 has the fixed iron core 18, the outer yoke 14, the separating elastic body 36, the elastic body receiver 34, the movable iron core 20, and the fixed iron core 18 in this order. A magnetic circuit 38 through which magnetism flows is formed. In the magnetic circuit 38, magnetism flows between the outer yoke 14 and the movable iron core 20 via the separating elastic body 36 made of a magnetic material and the elastic body receiver 34 made of a magnetic body, thereby creating an air gap. There is no. That is, there is no air gap in the magnetic circuit 38. As described above, in the solenoid valve according to the present invention, since the air gap is not generated in the magnetic circuit 38, the movable iron core 20 can be moved with a small current. As a result, the solenoid valve can be downsized.
【００１１】[0011]
【発明の第二実施形態】次に、本発明に係る電磁弁の他
の実施形態を図２に基づいて説明する。図２において図
１と同一符号は同一部材を示す。第一実施形態の電磁弁
では弾性体受け３４を可動鉄心２０に接触させが、第二
実施形態の電磁弁では弾性体受けを可動鉄心２０に接触
させないようにするものである。この第二実施形態で
は、磁性体材料からなる弾性体受け４０を可動鉄心２０
には接触させないようにする。このために、例えば弾性
体受け４０を環状の形状としてその中央に穴４２を形成
し、この弾性体受け４０の中央の穴４２に可動鉄心２０
を弾性体受け４０と接触しないように挿通させ、その穴
４２を挿通した可動鉄心２０の先端に非磁性体の弁体２
２を取り付ける。弾性体受け４０と弁体２２とは互いに
嵌合する形状に形成することが望ましく、例えば弾性体
受け４０と弁体２２とを嵌合させた状態では可動鉄心２
０と弾性体受け４０とが接触しないように設定する。弾
性体受け４０の表面に防錆材による被膜処理を施す。Second Embodiment of the Invention Next, another embodiment of the solenoid valve according to the present invention will be described with reference to FIG. 2, the same reference numerals as those in FIG. 1 indicate the same members. In the electromagnetic valve of the first embodiment, the elastic body receiver 34 is brought into contact with the movable iron core 20, whereas in the electromagnetic valve of the second embodiment, the elastic body receiver is not brought into contact with the movable iron core 20. In the second embodiment, the elastic body receiver 40 made of a magnetic material is attached to the movable iron core 20.
Avoid contact with. For this purpose, for example, the elastic body receiver 40 is formed in an annular shape and a hole 42 is formed in the center thereof, and the movable iron core 20 is formed in the center hole 42 of the elastic body receiver 40.
Is inserted so that it does not come into contact with the elastic body receiver 40, and the valve body 2 made of a non-magnetic material is attached to the tip of the movable iron core 20 inserted through the hole 42.
Attach 2. It is desirable that the elastic body receiver 40 and the valve body 22 are formed in a shape that fits with each other. For example, when the elastic body receiver 40 and the valve body 22 are fitted together, the movable iron core 2
It is set so that 0 and the elastic body receiver 40 do not come into contact with each other. The surface of the elastic body receiver 40 is coated with a rust preventive material.
【００１２】可動鉄心２０においては、ボビン１０より
外側に径小部４４を形成すると共に、その径小部４４の
固定鉄心１８側に段部４６を形成する。可動鉄心２０の
段部４６と弾性体受け４０（弁体２２と接触位置の反対
側位置）との間に、それらに接触するように磁性体材料
からなる押圧用弾性体４８を備える。この押圧用弾性体
４８は、弾性体受け４０を弁体２２側に押し、弾性体受
け４０を弁体２２と常に接触させる働きをする。この押
圧用弾性体４８を用いることによって、弁体２２への弾
性体受け４０への取付け（弁体２２との弾性体受け４０
との常時接触保持）を容易に行うことができる。また、
この押圧用弾性体４８によって、弾性体受け４０を可動
鉄心２０には接触させない状態を維持することができ
る。この押圧用弾性体４８は、可動鉄心２０の外側に配
置されるコイルスプリングが望ましいが、それに限るも
のではない。この押圧用弾性体４８の表面に防錆材によ
る被膜処理を施す。In the movable iron core 20, a small diameter portion 44 is formed outside the bobbin 10, and a step portion 46 is formed on the fixed iron core 18 side of the small diameter portion 44. A pressing elastic body 48 made of a magnetic material is provided between the step portion 46 of the movable iron core 20 and the elastic body receiver 40 (position opposite to the contact position with the valve body 22). The pressing elastic body 48 functions to push the elastic body receiver 40 toward the valve body 22 and keep the elastic body receiver 40 in contact with the valve body 22. By using the pressing elastic body 48, the elastic body receiver 40 is attached to the valve body 22 (the elastic body receiver 40 with the valve body 22).
Can always be maintained in constant contact with). Also,
With this pressing elastic body 48, it is possible to maintain the state in which the elastic body receiver 40 is not in contact with the movable iron core 20. The pressing elastic body 48 is preferably a coil spring arranged outside the movable iron core 20, but is not limited thereto. The surface of the pressing elastic body 48 is coated with a rust preventive material.
【００１３】アウターヨーク１４と弾性体受け４０との
間に、それらに接触するように磁性体材料からなる離間
用弾性体３６を備える点は、前述の第一実施形態と同じ
である。この離間用弾性体３６は押圧用弾性体４８の外
側に配置する。As in the first embodiment described above, a separating elastic member 36 made of a magnetic material is provided between the outer yoke 14 and the elastic member receiver 40 so as to contact them. The separating elastic body 36 is arranged outside the pressing elastic body 48.
【００１４】以上のように構成した電磁弁では、コイル
１２に通電することによって、可動鉄心２０は離間用弾
性体３６に抗して固定鉄心１６側に吸着される。可動鉄
心２０と固定鉄心１６とが吸着した状態では、図２に示
す電磁弁に、固定鉄心１８，アウターヨーク１４，離間
用弾性体３６，弾性体受け４０，押圧用弾性体４８，可
動鉄心２０，固定鉄心１８の順に磁気が流れる磁気回路
５０が形成される。この磁気回路５０では、アウターヨ
ーク１４から可動鉄心２０までの間は、磁性体材料から
なる離間用弾性体３６と磁性体材料からなる弾性体受け
４０と、磁性体材料からなる押圧用弾性体４８を介して
磁気が流れ、エアギャップが生じることはない。即ち、
磁気回路５０にはエアギャップが生じない。このよう
に、本発明の第二実施形態においても、磁気回路５０に
エアギャップを生じないようにしたので、小電流で可動
鉄心２０を動かすことが可能となる。この結果、電磁弁
の小型化を図ることができる。In the solenoid valve constructed as described above, the movable iron core 20 is attracted to the fixed iron core 16 side against the separating elastic body 36 by energizing the coil 12. In the state where the movable iron core 20 and the fixed iron core 16 are attracted to each other, the electromagnetic valve shown in FIG. 2 has the fixed iron core 18, the outer yoke 14, the separating elastic body 36, the elastic body receiver 40, the pressing elastic body 48, and the movable iron core 20. A magnetic circuit 50 through which magnetism flows is formed in the order of the fixed iron core 18. In the magnetic circuit 50, a space between the outer yoke 14 and the movable iron core 20 is separated by an elastic body 36 made of a magnetic material, an elastic body receiver 40 made of a magnetic material, and a pressing elastic body 48 made of a magnetic material. The magnetism flows through and no air gap is created. That is,
There is no air gap in the magnetic circuit 50. As described above, also in the second embodiment of the present invention, since the air gap is not generated in the magnetic circuit 50, the movable iron core 20 can be moved with a small current. As a result, the solenoid valve can be downsized.
【００１５】[0015]
【発明の効果】以上のように、本発明に係わる電磁弁に
よれば、従来の電磁弁に存在したエアギャップを無くし
たので、従来のものと比べて小電流（従来の約三分の
二）で可動鉄心を動かすことが可能となり、電磁弁の小
型化を図ることができる。本発明に磁性体材料からなる
離間用弾性体と弾性体受けと押圧用弾性体の表面に防錆
材による被膜処理を施すことによって、電磁弁の長期の
使用が可能になる。As described above, according to the solenoid valve of the present invention, since the air gap existing in the conventional solenoid valve is eliminated, a small current (about two-thirds of the conventional one) can be obtained. ), The movable iron core can be moved, and the solenoid valve can be downsized. By subjecting the surfaces of the elastic body for separation, the elastic body receiver, and the elastic body for pressing made of a magnetic material to the present invention, the electromagnetic valve can be used for a long period of time by applying a coating treatment with a rust preventive material.
【図１】本発明に係る電磁弁の一実施形態を示す断面図
である。FIG. 1 is a sectional view showing an embodiment of a solenoid valve according to the present invention.
【図２】本発明に係る電磁弁の他の実施形態を示す断面
図である。FIG. 2 is a cross-sectional view showing another embodiment of the solenoid valve according to the present invention.
【図３】従来の電磁弁の断面図である。FIG. 3 is a sectional view of a conventional solenoid valve.
１０ ボビン １２ コイル １４ アウターヨーク １６ 空間 １８ 固定鉄心 ２０ 可動鉄心 ２２ 弁体 ３４ 弾性体受け ３６ 離間用弾性体 ３８ 磁気回路 ４０ 弾性体受け ４８ 押圧用弾性体 ５０ 磁気回路 10 bobbins 12 coils 14 Outer yoke 16 spaces 18 Fixed iron core 20 movable iron core 22 valve body 34 Elastic receiver 36 Elastic body for separation 38 Magnetic circuit 40 Elastic receiver 48 Elastic body for pressing 50 magnetic circuit
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１３年１２月１９日（２００１．１２．
１９）[Submission date] December 19, 2001 (2001.12.
19)
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【書類名】 明細書[Document name] Statement
【発明の名称】 電磁弁[Title of Invention] Solenoid valve
【特許請求の範囲】[Claims]
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【発明の属する技術分野】本発明は電磁弁に関する。TECHNICAL FIELD The present invention relates to a solenoid valve.
【０００２】[0002]
【従来の技術】従来既知の電磁弁の一般的な構造を図３
に示す。筒状あるいは糸巻き状のボビン１０の外側にコ
イル１２が巻き付けられ、そのボビン１０の外側にアウ
ターヨーク１４が取り付けられる。ボビン１０の軸中心
位置に空間１６が形成され、その空間１６の一端側に固
定鉄心１８が備えられる。ボビン１０の空間１６内に可
動鉄心２０の一端が挿入され、その可動鉄心２０のボビ
ン１０より外部の先端位置に弁体２２が取り付けられ
る。ボビン１０の空間１６の内壁には円筒形のスリーブ
２４が備えられ、このスリーブ２４内を可動鉄心２０が
軸方向に自由に摺動する。このスリーブ２４は非磁性体
であり、このスリーブ２４によって可動鉄心２０とボビ
ン１０やアウターヨーク１４とは接触しないようになっ
ている。2. Description of the Related Art The general structure of a conventionally known solenoid valve is shown in FIG.
Shown in. A coil 12 is wound around the outside of the bobbin 10 having a tubular shape or a bobbin shape, and an outer yoke 14 is attached to the outside of the bobbin 10. A space 16 is formed at the axial center position of the bobbin 10, and a fixed iron core 18 is provided on one end side of the space 16. One end of the movable iron core 20 is inserted into the space 16 of the bobbin 10, and the valve body 22 is attached to the movable iron core 20 at a tip position outside the bobbin 10. A cylindrical sleeve 24 is provided on the inner wall of the space 16 of the bobbin 10, and the movable iron core 20 slides freely in the sleeve 24 in the axial direction. The sleeve 24 is a non-magnetic material, and the sleeve 24 prevents the movable iron core 20 from coming into contact with the bobbin 10 or the outer yoke 14.
【０００３】固定鉄心１８における可動鉄心２０と対向
する面には凹部２６が設けられ、一方、可動鉄心２０に
おける固定鉄心１８と対向する面にも凹部２８が設けら
れる。固定鉄心１６の凹部２４と可動鉄心２０の凹部２
６にスプリング２８を装着し、このスプリング３０によ
って可動鉄心２０を固定鉄心１６から離れる方向に付勢
している。コイル１２に通電することによって、可動鉄
心２０は固定鉄心１６側に移動させられ、可動鉄心２０
は固定鉄心１６に吸着させられる。可動鉄心２０が固定
鉄心１６に吸着させられた状態（図３）では、この電磁
弁に固定鉄心１８，アウターヨーク１４，可動鉄心２
０，スプリング２８，固定鉄心１８の順に磁気が流れる
磁気回路３２が形成される。A concave portion 26 is provided on the surface of the fixed iron core 18 facing the movable iron core 20, and a concave portion 28 is also provided on the surface of the movable iron core 20 facing the fixed iron core 18. The recess 24 of the fixed iron core 16 and the recess 2 of the movable iron core 20
A spring 28 is attached to 6, and the spring 30 biases the movable core 20 in a direction away from the fixed core 16. By energizing the coil 12, the movable iron core 20 is moved to the fixed iron core 16 side, and the movable iron core 20 is moved.
Are attracted to the fixed iron core 16. In the state where the movable iron core 20 is attracted to the fixed iron core 16 (FIG. 3), the fixed iron core 18, the outer yoke 14, and the movable iron core 2 are attached to the solenoid valve.
A magnetic circuit 32 through which magnetism flows is formed in the order of 0, the spring 28, and the fixed iron core 18.
【０００４】[0004]
【発明が解決しようとする課題】図３に示す電磁弁で
は、可動鉄心２０が摺接する非磁性体材料からなるスリ
ーブ２４を備えているため、このスリーブ２４によって
可動鉄心２０とアウターヨーク１４との接触は遮断され
ている。この結果、磁気回路３２において、アウターヨ
ーク１４から可動鉄心２０への途中にエアギャップが生
じて、磁気漏れが発生する。このため、可動鉄心２０を
固定鉄心１８に吸着保持するためにある程度大きな電流
が必要となり、コイル１２（ボビン１０）を大きくしな
ければならないという欠点があった。In the solenoid valve shown in FIG. 3, since the movable iron core 20 is provided with the sleeve 24 made of a non-magnetic material, the movable iron core 20 and the outer yoke 14 are connected by the sleeve 24. Contact is blocked. As a result, in the magnetic circuit 32, an air gap is generated midway from the outer yoke 14 to the movable iron core 20, and magnetic leakage occurs. Therefore, a certain amount of current is required to attract and hold the movable iron core 20 to the fixed iron core 18, and there is a drawback in that the coil 12 (bobbin 10) must be large.
【０００５】本発明は上記の点に鑑みてなされたもの
で、磁気回路の途中にエアギャップを生じないようにす
ることで、小電流で可動鉄心を移動させることを可能に
し、小型化を達成するようにした電磁弁を提供すること
を目的とするものである。The present invention has been made in view of the above points, and it is possible to move the movable iron core with a small current by preventing an air gap from being formed in the middle of the magnetic circuit, thereby achieving miniaturization. The purpose of the present invention is to provide a solenoid valve adapted to do so.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に本発明の電磁弁は、内部に空間を有する筒状のボビン
と、その筒状のボビンの外側に巻き付けたコイルと、前
記ボビンの空間の一端側においてボビンに固定される固
定鉄心と、前記ボビンの外側に取り付けられるアウター
ヨークと、前記ボビンの空間に一端を挿入するものであ
って前記コイルに通電することで前記固定鉄心に対して
近づく方向に変位する可動鉄心と、その可動鉄心を前記
固定鉄心から離れる方向に付勢する離間用弾性体と、前
記ボビンの空間より外部において前記可動鉄心に取付け
た弁体とを有する電磁弁において、前記可動鉄心に接触
する磁性体材料から成る弾性体受けを備え、前記離間用
弾性体を磁性体材料で構成し、その離間用弾性体の一端
を前記アウターヨークに接触させると共にその離間用弾
性体の他端を前記弾性体受けに接触させ、前記固定鉄心
と前記アウターヨークと前記離間用弾性体と前記弾性体
受けと前記可動鉄心とから成る磁気回路を形成するよう
にしたものである。In order to achieve the above object, a solenoid valve according to the present invention comprises a tubular bobbin having an internal space, a coil wound around the tubular bobbin, and a bobbin of the bobbin. A fixed iron core fixed to the bobbin at one end side of the space, an outer yoke attached to the outside of the bobbin, and one end of which is inserted into the space of the bobbin, and the coil is energized to the fixed iron core. Solenoid valve having a movable core that is displaced in a direction approaching the movable core, a separating elastic body that urges the movable core in a direction away from the fixed core, and a valve body that is attached to the movable core outside the space of the bobbin. In the above, an elastic body receiver made of a magnetic material that comes into contact with the movable iron core is provided, the separating elastic body is made of a magnetic material, and one end of the separating elastic body has the outer yo-yo. And the other end of the separating elastic body is brought into contact with the elastic body receiver to form a magnetic circuit including the fixed iron core, the outer yoke, the separating elastic body, the elastic body receiver, and the movable iron core. It is designed to be formed.
【０００７】本発明は更に、内部に空間を有する筒状の
ボビンと、その筒状のボビンの外側に巻き付けたコイル
と、前記ボビンの空間の一端側においてボビンに固定さ
れる固定鉄心と、前記ボビンの外側に取り付けられるア
ウターヨークと、前記ボビンの空間に一端を挿入するも
のであって前記コイルに通電することで前記固定鉄心に
対して近づく方向に変位する可動鉄心と、その可動鉄心
を前記固定鉄心から離れる方向に付勢する離間用弾性体
と、前記ボビンの空間より外部において前記可動鉄心に
取付けた弁体とを有する電磁弁において、前記可動鉄心
に接触しない磁性体材料から成る弾性体受けを備え、前
記離間用弾性体を磁性体材料で構成し、その離間用弾性
体の一端を前記アウターヨークに接触させると共にその
離間用弾性体の他端を前記弾性体受けに接触させ、前記
弾性体受けを前記弁体側に押圧するために前記可動鉄心
と前記弾性体受けにそれぞれ一端を接触する磁性体材料
から成る押圧用弾性体を備え、前記固定鉄心と前記アウ
ターヨークと前記離間用弾性体と前記弾性体受けと前記
押圧用弾性体と前記可動鉄心とから成る磁気回路を形成
するようにしたものである。The present invention further includes a cylindrical bobbin having a space therein, a coil wound around the cylindrical bobbin, a fixed iron core fixed to the bobbin at one end of the space of the bobbin, An outer yoke attached to the outside of the bobbin, a movable iron core, one end of which is inserted into the space of the bobbin, and which is displaced in a direction toward the fixed iron core by energizing the coil, and the movable iron core. In a solenoid valve having a separating elastic body that urges in a direction away from a fixed iron core and a valve body attached to the movable iron core outside the space of the bobbin, an elastic body made of a magnetic material that does not contact the movable iron core. A receiver, the separating elastic body is made of a magnetic material, and one end of the separating elastic body is brought into contact with the outer yoke, and the separating elastic body is And a fixed elastic body made of a magnetic material that makes one end contact with the movable core and the elastic body receiver in order to press the elastic body receiver toward the valve body side. A magnetic circuit including an iron core, the outer yoke, the separating elastic body, the elastic body receiver, the pressing elastic body, and the movable iron core is formed.
【０００８】[0008]
【発明の第一実施形態】次に本発明を図面に基づいて説
明する。図１は本発明の電磁弁の一実施形態を示す断面
図である。図３と同一符号は同一部材を示す。本発明の
電磁弁においては、ボビン１０より外側に位置する可動
鉄心２０の先端付近に、磁性体材料からなる弾性体受け
３４を取付ける。可動鉄心２０と弾性体受け３４とは直
接接触させるのが望ましいが、図示しない磁性体材料を
介在させても良い。この弾性体受け３４は、外径が可動
鉄心２０の外径より大きいものとし、形状は皿状である
のが望ましい。この弾性体受け３４の表面に防錆材によ
る被膜処理を施す。First Embodiment Next, the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of a solenoid valve of the present invention. The same reference numerals as those in FIG. 3 indicate the same members. In the electromagnetic valve of the present invention, the elastic body receiver 34 made of a magnetic material is attached near the tip of the movable iron core 20 located outside the bobbin 10. It is desirable that the movable iron core 20 and the elastic body receiver 34 be in direct contact with each other, but a magnetic material (not shown) may be interposed. The elastic body receiver 34 has an outer diameter larger than that of the movable iron core 20, and preferably has a dish shape. The surface of the elastic body receiver 34 is coated with a rust preventive material.
【０００９】アウターヨーク１４（ボビン１０より外側
に位置する可動鉄心２０に近い位置）と前記弾性体受け
３４との間に、それらに接触するように磁性体材料から
なる離間用弾性体３６を備える。この離間用弾性体３６
は可動鉄心２０の周囲に配置されるコイルスプリングが
望ましいが、それに限るものではない。この離間用弾性
体３６の表面に防錆材による被膜処理を施す。この離間
用弾性体３６は、弾性体受け３４をアウターヨーク１４
から離す方向に付勢することで、弾性体受け３４を取付
けた可動鉄心２０を固定鉄心１６から離す方向に付勢し
ている。離間用弾性体３６はアウターヨーク１４に直接
接触させるのが望ましいが、アウターヨーク１４と接触
する図示しない磁性体部材と接触させるようにしても良
い。本発明では従来と同様に、ボビン１０の空間１６の
内壁に円筒形のスリーブ２４を備え、そのスリーブ２４
で可動鉄心２０とアウターヨーク１４との接触を遮断す
るようにしているが、これに限るものではない。本発明
のその他の構成は、図３と同様かあるいは従来既知の電
磁弁の構成と同様のものとする。An elastic member 36 made of a magnetic material is provided between the outer yoke 14 (a position closer to the movable iron core 20 positioned outside the bobbin 10) and the elastic member receiver 34 so as to contact them. . This separating elastic body 36
Is preferably a coil spring arranged around the movable iron core 20, but is not limited thereto. The surface of the separating elastic body 36 is coated with a rust preventive material. The elastic body 36 for separating the elastic body 34 from the outer yoke 14
By urging the movable core 20 having the elastic body receiver 34 attached thereto, the movable core 20 is urged in the direction away from the fixed core 16. It is desirable that the separating elastic body 36 is brought into direct contact with the outer yoke 14, but it may be brought into contact with a magnetic member (not shown) that comes into contact with the outer yoke 14. In the present invention, as in the conventional case, a cylindrical sleeve 24 is provided on the inner wall of the space 16 of the bobbin 10, and the sleeve 24
Although the contact between the movable iron core 20 and the outer yoke 14 is blocked by the above, the invention is not limited to this. The other structure of the present invention is the same as that of FIG. 3 or the same as that of a conventionally known solenoid valve.
【００１０】以上のように構成した電磁弁では、コイル
１２に通電することによって、可動鉄心２０は離間用弾
性体３６に抗して固定鉄心１６に吸着される。可動鉄心
２０と固定鉄心１６とが吸着した状態において、図１に
示す電磁弁に、固定鉄心１８，アウターヨーク１４，離
間用弾性体３６，弾性体受け３４，可動鉄心２０，固定
鉄心１８の順に磁気が流れる磁気回路３８が形成され
る。この磁気回路３８では、アウターヨーク１４から可
動鉄心２０までの間は、磁性体材料からなる離間用弾性
体３６と磁性体からなる弾性体受け３４とを介して磁気
が流れ、エアギャップが生じることはない。即ち、磁気
回路３８にはエアギャップが生じない。このように、本
発明に係る電磁弁では、磁気回路３８にエアギャップを
生じないようにしたので、小電流で可動鉄心２０を動か
すことが可能となる。この結果、電磁弁の小型化を図る
ことができる。In the solenoid valve configured as described above, the movable iron core 20 is attracted to the fixed iron core 16 against the separating elastic body 36 by energizing the coil 12. In the state where the movable iron core 20 and the fixed iron core 16 are attracted to each other, the solenoid valve shown in FIG. 1 has the fixed iron core 18, the outer yoke 14, the separating elastic body 36, the elastic body receiver 34, the movable iron core 20, and the fixed iron core 18 in this order. A magnetic circuit 38 through which magnetism flows is formed. In the magnetic circuit 38, magnetism flows between the outer yoke 14 and the movable iron core 20 via the separating elastic body 36 made of a magnetic material and the elastic body receiver 34 made of a magnetic body, thereby creating an air gap. There is no. That is, there is no air gap in the magnetic circuit 38. As described above, in the solenoid valve according to the present invention, since the air gap is not generated in the magnetic circuit 38, the movable iron core 20 can be moved with a small current. As a result, the solenoid valve can be downsized.
【００１１】[0011]
【発明の第二実施形態】次に、本発明に係る電磁弁の他
の実施形態を図２に基づいて説明する。図２において図
１と同一符号は同一部材を示す。第一実施形態の電磁弁
では弾性体受け３４を可動鉄心２０に接触させが、第二
実施形態の電磁弁では弾性体受けを可動鉄心２０に接触
させないようにするものである。この第二実施形態で
は、磁性体材料からなる弾性体受け４０を可動鉄心２０
には接触させないようにする。このために、例えば弾性
体受け４０を環状の形状としてその中央に穴４２を形成
し、この弾性体受け４０の中央の穴４２に可動鉄心２０
を弾性体受け４０と接触しないように挿通させ、その穴
４２を挿通した可動鉄心２０の先端に非磁性体の弁体２
２を取り付ける。弾性体受け４０と弁体２２とは互いに
嵌合する形状に形成することが望ましく、例えば弾性体
受け４０と弁体２２とを嵌合させた状態では可動鉄心２
０と弾性体受け４０とが接触しないように設定する。弾
性体受け４０の表面に防錆材による被膜処理を施す。Second Embodiment of the Invention Next, another embodiment of the solenoid valve according to the present invention will be described with reference to FIG. 2, the same reference numerals as those in FIG. 1 indicate the same members. In the electromagnetic valve of the first embodiment, the elastic body receiver 34 is brought into contact with the movable iron core 20, whereas in the electromagnetic valve of the second embodiment, the elastic body receiver is not brought into contact with the movable iron core 20. In the second embodiment, the elastic body receiver 40 made of a magnetic material is attached to the movable iron core 20.
Avoid contact with. For this purpose, for example, the elastic body receiver 40 is formed in an annular shape and a hole 42 is formed in the center thereof, and the movable iron core 20 is formed in the center hole 42 of the elastic body receiver 40.
Is inserted so that it does not come into contact with the elastic body receiver 40, and the valve body 2 made of a non-magnetic material is attached to the tip of the movable iron core 20 inserted through the hole 42.
Attach 2. It is desirable that the elastic body receiver 40 and the valve body 22 are formed in a shape that fits with each other. For example, when the elastic body receiver 40 and the valve body 22 are fitted together, the movable iron core 2
It is set so that 0 and the elastic body receiver 40 do not come into contact with each other. The surface of the elastic body receiver 40 is coated with a rust preventive material.
【００１２】可動鉄心２０においては、ボビン１０より
外側に径小部４４を形成すると共に、その径小部４４の
固定鉄心１８側に段部４６を形成する。可動鉄心２０の
段部４６と弾性体受け４０（弁体２２と接触位置の反対
側位置）との間に、それらに接触するように磁性体材料
からなる押圧用弾性体４８を備える。この押圧用弾性体
４８は、弾性体受け４０を弁体２２側に押し、弾性体受
け４０を弁体２２と常に接触させる働きをする。この押
圧用弾性体４８を用いることによって、弁体２２への弾
性体受け４０への取付け（弁体２２との弾性体受け４０
との常時接触保持）を容易に行うことができる。また、
この押圧用弾性体４８によって、弾性体受け４０を可動
鉄心２０には接触させない状態を維持することができ
る。この押圧用弾性体４８は、可動鉄心２０の外側に配
置されるコイルスプリングが望ましいが、それに限るも
のではない。この押圧用弾性体４８の表面に防錆材によ
る被膜処理を施す。In the movable iron core 20, a small diameter portion 44 is formed outside the bobbin 10, and a step portion 46 is formed on the fixed iron core 18 side of the small diameter portion 44. A pressing elastic body 48 made of a magnetic material is provided between the step portion 46 of the movable iron core 20 and the elastic body receiver 40 (position opposite to the contact position with the valve body 22). The pressing elastic body 48 functions to push the elastic body receiver 40 toward the valve body 22 and keep the elastic body receiver 40 in contact with the valve body 22. By using the pressing elastic body 48, the elastic body receiver 40 is attached to the valve body 22 (the elastic body receiver 40 with the valve body 22).
Can always be maintained in constant contact with). Also,
With this pressing elastic body 48, it is possible to maintain the state in which the elastic body receiver 40 is not in contact with the movable iron core 20. The pressing elastic body 48 is preferably a coil spring arranged outside the movable iron core 20, but is not limited thereto. The surface of the pressing elastic body 48 is coated with a rust preventive material.
【００１３】アウターヨーク１４と弾性体受け４０との
間に、それらに接触するように磁性体材料からなる離間
用弾性体３６を備える点は、前述の第一実施形態と同じ
である。この離間用弾性体３６は押圧用弾性体４８の外
側に配置する。As in the first embodiment described above, a separating elastic member 36 made of a magnetic material is provided between the outer yoke 14 and the elastic member receiver 40 so as to contact them. The separating elastic body 36 is arranged outside the pressing elastic body 48.
【００１４】以上のように構成した電磁弁では、コイル
１２に通電することによって、可動鉄心２０は離間用弾
性体３６に抗して固定鉄心１６側に吸着される。可動鉄
心２０と固定鉄心１６とが吸着した状態では、図２に示
す電磁弁に、固定鉄心１８，アウターヨーク１４，離間
用弾性体３６，弾性体受け４０，押圧用弾性体４８，可
動鉄心２０，固定鉄心１８の順に磁気が流れる磁気回路
５０が形成される。この磁気回路５０では、アウターヨ
ーク１４から可動鉄心２０までの間は、磁性体材料から
なる離間用弾性体３６と磁性体材料からなる弾性体受け
４０と、磁性体材料からなる押圧用弾性体４８を介して
磁気が流れ、エアギャップが生じることはない。即ち、
磁気回路５０にはエアギャップが生じない。このよう
に、本発明の第二実施形態においても、磁気回路５０に
エアギャップを生じないようにしたので、小電流で可動
鉄心２０を動かすことが可能となる。この結果、電磁弁
の小型化を図ることができる。In the solenoid valve constructed as described above, the movable iron core 20 is attracted to the fixed iron core 16 side against the separating elastic body 36 by energizing the coil 12. In the state where the movable iron core 20 and the fixed iron core 16 are attracted to each other, the electromagnetic valve shown in FIG. 2 has the fixed iron core 18, the outer yoke 14, the separating elastic body 36, the elastic body receiver 40, the pressing elastic body 48, and the movable iron core 20. A magnetic circuit 50 through which magnetism flows is formed in the order of the fixed iron core 18. In the magnetic circuit 50, a space between the outer yoke 14 and the movable iron core 20 is separated by an elastic body 36 made of a magnetic material, an elastic body receiver 40 made of a magnetic material, and a pressing elastic body 48 made of a magnetic material. The magnetism flows through and no air gap is created. That is,
There is no air gap in the magnetic circuit 50. As described above, also in the second embodiment of the present invention, since the air gap is not generated in the magnetic circuit 50, the movable iron core 20 can be moved with a small current. As a result, the solenoid valve can be downsized.
【００１５】[0015]
【発明の効果】以上のように、本発明に係る電磁弁によ
れば、従来の電磁弁に存在したエアギャップを無くした
ので、従来のものと比べて小電流（従来の約三分の二）
で可動鉄心を動かすことが可能となり、電磁弁の小型化
を図ることができる。本発明に磁性体材料からなる離間
用弾性体と弾性体受けと押圧用弾性体の表面に防錆材に
よる被膜処理を施すことによって、電磁弁の長期の使用
が可能になる。As described above, according to the solenoid valve of the present invention, since the air gap existing in the conventional solenoid valve is eliminated, a small current (about two-thirds of that of the conventional one) can be obtained. )
The movable iron core can be moved by, and the solenoid valve can be downsized. By subjecting the surfaces of the elastic body for separation, the elastic body receiver, and the elastic body for pressing made of a magnetic material to the present invention, the electromagnetic valve can be used for a long period of time by applying a coating treatment with a rust preventive material.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明に係る電磁弁の一実施形態を示す断面図
である。FIG. 1 is a sectional view showing an embodiment of a solenoid valve according to the present invention.
【図２】本発明に係る電磁弁の他の実施形態を示す断面
図である。FIG. 2 is a cross-sectional view showing another embodiment of the solenoid valve according to the present invention.
【図３】従来の電磁弁の断面図である。FIG. 3 is a sectional view of a conventional solenoid valve.
【符号の説明】
１０ ボビン
１２ コイル
１４ アウターヨーク
１６ 空間
１８ 固定鉄心
２０ 可動鉄心
２２ 弁体
３４ 弾性体受け
３６ 離間用弾性体
３８ 磁気回路
４０ 弾性体受け
４８ 押圧用弾性体
５０ 磁気回路
─────────────────────────────────────────────────────
[Explanation of Codes] 10 bobbin 12 coil 14 outer yoke 16 space 18 fixed iron core 20 movable iron core 22 valve body 34 elastic body receiver 36 elastic body 38 for spacing 38 magnetic circuit 40 elastic body receiver 48 elastic body 50 for pressing magnetic circuit ─── ───────────────────────────────────────────────────
【手続補正書】[Procedure amendment]
【提出日】平成１３年１２月２７日（２００１．１２．
２７）[Submission date] December 27, 2001 (2001.12.
27)
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００３[Name of item to be corrected] 0003
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００３】固定鉄心１８における可動鉄心２０と対向
する面には凹部２６が設けられ、一方、可動鉄心２０に
おける固定鉄心１８と対向する面にも凹部２８が設けら
れる。固定鉄心１８の凹部２６と可動鉄心２０の凹部２
８にスプリング３０を装着し、このスプリング３０によ
って可動鉄心２０を固定鉄心１８から離れる方向に付勢
している。コイル１２に通電することによって、可動鉄
心２０は固定鉄心１８側に移動させられ、可動鉄心２０
は固定鉄心１８に吸着させられる。可動鉄心２０が固定
鉄心１８に吸着させられた状態（図３）では、この電磁
弁に固定鉄心１８，アウターヨーク１４，可動鉄心２
０，固定鉄心１８の順に磁気が流れる磁気回路３２が形
成される。A concave portion 26 is provided on the surface of the fixed iron core 18 facing the movable iron core 20, and a concave portion 28 is also provided on the surface of the movable iron core 20 facing the fixed iron core 18. The recess 26 of the fixed core 18 and the recess 2 of the movable core 20
A spring 30 is mounted on the movable core 20 and the movable core 20 is urged in the direction away from the fixed core 18 . By energizing the coil 12, the movable iron core 20 is moved to the fixed iron core 18 side, and the movable iron core 20 is moved.
Are attracted to the fixed iron core 18 . When the movable iron core 20 is attracted to the fixed iron core 18 (FIG. 3), the fixed iron core 18, the outer yoke 14, and the movable iron core 2 are attached to the solenoid valve.
A magnetic circuit 32 in which magnetism flows is formed in the order of 0 and the fixed iron core 18 .
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００９[Correction target item name] 0009
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００９】アウターヨーク１４（ボビン１０より外側
に位置する可動鉄心２０に近い位置）と前記弾性体受け
３４との間に、それらに接触するように磁性体材料から
なる離間用弾性体３６を備える。この離間用弾性体３６
は可動鉄心２０の周囲に配置されるコイルスプリングが
望ましいが、それに限るものではない。この離間用弾性
体３６の表面に防錆材による被膜処理を施す。この離間
用弾性体３６は、弾性体受け３４をアウターヨーク１４
から離す方向に付勢することで、弾性体受け３４を取付
けた可動鉄心２０を固定鉄心１８から離す方向に付勢し
ている。離間用弾性体３６はアウターヨーク１４に直接
接触させるのが望ましいが、アウターヨーク１４と接触
する図示しない磁性体部材と接触させるようにしても良
い。本発明では従来と同様に、ボビン１０の空間１６の
内壁に円筒形のスリーブ２４を備え、そのスリーブ２４
で可動鉄心２０とアウターヨーク１４との接触を遮断す
るようにしているが、これに限るものではない。本発明
のその他の構成は、図３と同様かあるいは従来既知の電
磁弁の構成と同様のものとする。An elastic member 36 made of a magnetic material is provided between the outer yoke 14 (a position closer to the movable iron core 20 positioned outside the bobbin 10) and the elastic member receiver 34 so as to contact them. . This separating elastic body 36
Is preferably a coil spring arranged around the movable iron core 20, but is not limited thereto. The surface of the separating elastic body 36 is coated with a rust preventive material. The elastic body 36 for separating the elastic body 34 from the outer yoke 14
By urging the movable core 20 having the elastic body receiver 34 attached thereto, the movable core 20 is urged in the direction away from the fixed core 18 . It is desirable that the separating elastic body 36 is brought into direct contact with the outer yoke 14, but it may be brought into contact with a magnetic member (not shown) that comes into contact with the outer yoke 14. In the present invention, as in the conventional case, a cylindrical sleeve 24 is provided on the inner wall of the space 16 of the bobbin 10, and the sleeve 24
Although the contact between the movable iron core 20 and the outer yoke 14 is blocked by the above, the invention is not limited to this. The other structure of the present invention is the same as that of FIG. 3 or the same as that of a conventionally known solenoid valve.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１０】以上のように構成した電磁弁では、コイル
１２に通電することによって、可動鉄心２０は離間用弾
性体３６に抗して固定鉄心１８に吸着される。可動鉄心
２０と固定鉄心１８とが吸着した状態において、図１に
示す電磁弁に、固定鉄心１８，アウターヨーク１４，離
間用弾性体３６，弾性体受け３４，可動鉄心２０，固定
鉄心１８の順に磁気が流れる磁気回路３８が形成され
る。この磁気回路３８では、アウターヨーク１４から可
動鉄心２０までの間は、磁性体材料からなる離間用弾性
体３６と磁性体からなる弾性体受け３４とを介して磁気
が流れ、エアギャップが生じることはない。即ち、磁気
回路３８にはエアギャップが生じない。このように、本
発明に係る電磁弁では、磁気回路３８にエアギャップを
生じないようにしたので、小電流で可動鉄心２０を動か
すことが可能となる。この結果、電磁弁の小型化を図る
ことができる。In the solenoid valve constructed as described above, by energizing the coil 12, the movable iron core 20 is attracted to the fixed iron core 18 against the separating elastic body 36. In the state where the movable iron core 20 and the fixed iron core 18 are attracted to each other, the solenoid valve shown in FIG. 1 has the fixed iron core 18, the outer yoke 14, the separating elastic body 36, the elastic body receiver 34, the movable iron core 20, and the fixed iron core 18 in this order. A magnetic circuit 38 through which magnetism flows is formed. In the magnetic circuit 38, magnetism flows between the outer yoke 14 and the movable iron core 20 via the separating elastic body 36 made of a magnetic material and the elastic body receiver 34 made of a magnetic body, thereby creating an air gap. There is no. That is, there is no air gap in the magnetic circuit 38. As described above, in the solenoid valve according to the present invention, since the air gap is not generated in the magnetic circuit 38, the movable iron core 20 can be moved with a small current. As a result, the solenoid valve can be downsized.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１１[Correction target item name] 0011
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１１】[0011]
【発明の第二実施形態】次に、本発明に係る電磁弁の他
の実施形態を図２に基づいて説明する。図２において図
１と同一符号は同一部材を示す。第一実施形態の電磁弁
では弾性体受け３４を可動鉄心２０に接触させるが、第
二実施形態の電磁弁では弾性体受けを可動鉄心２０に接
触させないようにするものである。この第二実施形態で
は、磁性体材料からなる弾性体受け４０を可動鉄心２０
には接触させないようにする。このために、例えば弾性
体受け４０を環状の形状としてその中央に穴４２を形成
し、この弾性体受け４０の中央の穴４２に可動鉄心２０
を弾性体受け４０と接触しないように挿通させ、その穴
４２を挿通した可動鉄心２０の先端に非磁性体の弁体２
２を取り付ける。弾性体受け４０と弁体２２とは互いに
嵌合する形状に形成することが望ましく、例えば弾性体
受け４０と弁体２２とを嵌合させた状態では可動鉄心２
０と弾性体受け４０とが接触しないように設定する。弾
性体受け４０の表面に防錆材による被膜処理を施す。Second Embodiment of the Invention Next, another embodiment of the solenoid valve according to the present invention will be described with reference to FIG. 2, the same reference numerals as those in FIG. 1 indicate the same members. The solenoid valve of the first embodiment Ru contacting the elastic body receiving 34 to the movable iron core 20, but the solenoid valve of the second embodiment is intended to prevent contacting the elastic body received in the movable core 20. In the second embodiment, the elastic body receiver 40 made of a magnetic material is attached to the movable iron core 20.
Avoid contact with. For this purpose, for example, the elastic body receiver 40 is formed in an annular shape and a hole 42 is formed in the center thereof, and the movable iron core 20 is formed in the center hole 42 of the elastic body receiver 40.
Is inserted so that it does not come into contact with the elastic body receiver 40, and the valve body 2 made of a non-magnetic material is attached to the tip of the movable iron core 20 inserted through the hole 42.
Attach 2. It is desirable that the elastic body receiver 40 and the valve body 22 are formed in a shape that fits with each other. For example, when the elastic body receiver 40 and the valve body 22 are fitted together, the movable iron core 2
It is set so that 0 and the elastic body receiver 40 do not come into contact with each other. The surface of the elastic body receiver 40 is coated with a rust preventive material.
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１４[Correction target item name] 0014
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１４】以上のように構成した電磁弁では、コイル
１２に通電することによって、可動鉄心２０は離間用弾
性体３６に抗して固定鉄心１８側に吸着される。可動鉄
心２０と固定鉄心１８とが吸着した状態では、図２に示
す電磁弁に、固定鉄心１８，アウターヨーク１４，離間
用弾性体３６，弾性体受け４０，押圧用弾性体４８，可
動鉄心２０，固定鉄心１８の順に磁気が流れる磁気回路
５０が形成される。この磁気回路５０では、アウターヨ
ーク１４から可動鉄心２０までの間は、磁性体材料から
なる離間用弾性体３６と磁性体材料からなる弾性体受け
４０と、磁性体材料からなる押圧用弾性体４８を介して
磁気が流れ、エアギャップが生じることはない。即ち、
磁気回路５０にはエアギャップが生じない。このよう
に、本発明の第二実施形態においても、磁気回路５０に
エアギャップを生じないようにしたので、小電流で可動
鉄心２０を動かすことが可能となる。この結果、電磁弁
の小型化を図ることができる。In the solenoid valve constructed as described above, the coil 12 is energized so that the movable iron core 20 is attracted to the stationary iron core 18 side against the separating elastic body 36. In the state where the movable iron core 20 and the fixed iron core 18 are attracted to each other, the fixed iron core 18, the outer yoke 14, the separating elastic body 36, the elastic body receiver 40, the pressing elastic body 48, the movable iron core 20 are added to the solenoid valve shown in FIG. A magnetic circuit 50 through which magnetism flows is formed in the order of the fixed iron core 18. In the magnetic circuit 50, a space between the outer yoke 14 and the movable iron core 20 is separated by an elastic body 36 made of a magnetic material, an elastic body receiver 40 made of a magnetic material, and a pressing elastic body 48 made of a magnetic material. The magnetism flows through and no air gap is created. That is,
There is no air gap in the magnetic circuit 50. As described above, also in the second embodiment of the present invention, since the air gap is not generated in the magnetic circuit 50, the movable iron core 20 can be moved with a small current. As a result, the solenoid valve can be downsized.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3H106 DA07 DA23 DB02 DB12 DB23 DB32 DC02 DD03 EE16 EE22 GA08 GA10 GA11 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 3H106 DA07 DA23 DB02 DB12 DB23 DB32 DC02 DD03 EE16 EE22 GA08 GA10 GA11
Claims (4)
の筒状のボビンの外側に巻き付けたコイルと、前記ボビ
ンの空間の一端側においてボビンに固定される固定鉄心
と、前記ボビンの外側に取り付けられるアウターヨーク
と、前記ボビンの空間に一端を挿入するものであって前
記コイルに通電することで前記固定鉄心に対して近づく
方向に変位する可動鉄心と、その可動鉄心を前記固定鉄
心から離れる方向に付勢する離間用弾性体と、前記ボビ
ンの空間より外部において前記可動鉄心に取付けた弁体
とを有する電磁弁において、前記可動鉄心に接触する磁
性体材料から成る弾性体受けを備え、前記離間用弾性体
を磁性体材料で構成し、その離間用弾性体の一端を前記
アウターヨークに接触させると共にその離間用弾性体の
他端を前記弾性体受けに接触させ、前記固定鉄心と前記
アウターヨークと前記離間用弾性体と前記弾性体受けと
前記可動鉄心とから成る磁気回路を形成することを特徴
とする電磁弁。1. A cylindrical bobbin having a space inside, a coil wound around the cylindrical bobbin, a fixed core fixed to the bobbin at one end of the space of the bobbin, and an outer side of the bobbin. An outer yoke attached to the bobbin, a movable iron core having one end inserted into the space of the bobbin, which is displaced in a direction closer to the fixed iron core by energizing the coil, and the movable iron core from the fixed iron core. An electromagnetic valve having a separating elastic body urged in a separating direction and a valve body attached to the movable iron core outside the space of the bobbin, wherein an elastic body receiver made of a magnetic material contacting the movable iron core is provided. , The separating elastic body is made of a magnetic material, one end of the separating elastic body is brought into contact with the outer yoke, and the other end of the separating elastic body is received by the elastic body receiving member. A solenoid valve comprising a fixed iron core, the outer yoke, the separating elastic body, the elastic body receiver, and the movable iron core to form a magnetic circuit.
面を防錆材で被膜することを特徴とする請求項１記載の
電磁弁。2. The solenoid valve according to claim 1, wherein the surfaces of the elastic body for separation and the elastic body receiver are coated with a rust preventive material.
の筒状のボビンの外側に巻き付けたコイルと、前記ボビ
ンの空間の一端側においてボビンに固定される固定鉄心
と、前記ボビンの外側に取り付けられるアウターヨーク
と、前記ボビンの空間に一端を挿入するものであって前
記コイルに通電することで前記固定鉄心に対して近づく
方向に変位する可動鉄心と、その可動鉄心を前記固定鉄
心から離れる方向に付勢する離間用弾性体と、前記ボビ
ンの空間より外部において前記可動鉄心に取付けた弁体
とを有する電磁弁において、前記可動鉄心に接触しない
磁性体材料から成る弾性体受けを備え、前記離間用弾性
体を磁性体材料で構成し、その離間用弾性体の一端を前
記アウターヨークに接触させると共にその離間用弾性体
の他端を前記弾性体受けに接触させ、前記弾性体受けを
前記弁体側に押圧するために前記可動鉄心と前記弾性体
受けにそれぞれ一端を接触する磁性体材料から成る押圧
用弾性体を備え、前記固定鉄心と前記アウターヨークと
前記離間用弾性体と前記弾性体受けと前記押圧用弾性体
と前記可動鉄心とから成る磁気回路を形成することを特
徴とする電磁弁。3. A cylindrical bobbin having a space inside, a coil wound around the cylindrical bobbin, a fixed core fixed to the bobbin at one end of the space of the bobbin, and an outer side of the bobbin. An outer yoke attached to the bobbin, a movable iron core having one end inserted into the space of the bobbin, which is displaced in a direction closer to the fixed iron core by energizing the coil, and the movable iron core from the fixed iron core. An electromagnetic valve having a separating elastic body biased in a separating direction and a valve body attached to the movable iron core outside the space of the bobbin, wherein an elastic body receiver made of a magnetic material that does not contact the movable iron core is provided. The separation elastic body is made of a magnetic material, one end of the separation elastic body is brought into contact with the outer yoke, and the other end of the separation elastic body is formed of the elastic body. The fixed iron core and the outer member are provided with a pressing elastic body made of a magnetic material that contacts one end of the movable iron core and the elastic body receiver so as to contact the receiving body and press the elastic body receiver toward the valve body side. An electromagnetic valve comprising a magnetic circuit including a yoke, the separating elastic body, the elastic body receiver, the pressing elastic body, and the movable iron core.
前記弾性体受けの表面を防錆材で被膜することを特徴と
する請求項３記載の電磁弁。4. The solenoid valve according to claim 3, wherein the surfaces of the separating elastic body, the pressing elastic body, and the elastic body receiver are coated with a rust preventive material.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001383476A JP2003185050A (en) | 2001-12-17 | 2001-12-17 | Solenoid valve |
| TW91135316A TWI254775B (en) | 2001-12-17 | 2002-12-05 | Electromagnetic valve |
| CNB021560900A CN1311181C (en) | 2001-12-17 | 2002-12-16 | Electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001383476A JP2003185050A (en) | 2001-12-17 | 2001-12-17 | Solenoid valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003185050A true JP2003185050A (en) | 2003-07-03 |
Family
ID=27593511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001383476A Pending JP2003185050A (en) | 2001-12-17 | 2001-12-17 | Solenoid valve |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2003185050A (en) |
| CN (1) | CN1311181C (en) |
| TW (1) | TWI254775B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4561550B2 (en) * | 2005-09-15 | 2010-10-13 | 株式会社デンソー | Electromagnetic drive device |
| DE102014209322A1 (en) * | 2014-05-16 | 2015-11-19 | Robert Bosch Gmbh | Magnetic assembly for a solenoid valve and method for producing a magnetic assembly |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3505169C2 (en) * | 1985-02-15 | 1995-04-06 | Mannesmann Ag | Actuating magnet |
| JPH07253200A (en) * | 1994-03-14 | 1995-10-03 | Matsushita Electric Ind Co Ltd | Shut-off valve |
| JPH094735A (en) * | 1995-06-22 | 1997-01-07 | Nok Corp | Solenoid valve |
| JPH0914480A (en) * | 1995-06-27 | 1997-01-14 | Ee I Electric:Kk | Solenoid valve for fluid |
| JPH09178021A (en) * | 1995-12-20 | 1997-07-11 | Saginomiya Seisakusho Inc | Magnetic circuit structure of solenoid valve coil |
| JPH109430A (en) * | 1996-06-26 | 1998-01-13 | Aichi Electric Co Ltd | Solenoid valve |
-
2001
- 2001-12-17 JP JP2001383476A patent/JP2003185050A/en active Pending
-
2002
- 2002-12-05 TW TW91135316A patent/TWI254775B/en not_active IP Right Cessation
- 2002-12-16 CN CNB021560900A patent/CN1311181C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1450292A (en) | 2003-10-22 |
| CN1311181C (en) | 2007-04-18 |
| TWI254775B (en) | 2006-05-11 |
| TW200301338A (en) | 2003-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101900587B1 (en) | Solenoid robust against misalignment of pole piece and flux sleeve | |
| CN206723550U (en) | Electromagnetic valve device | |
| US9369031B2 (en) | Electromagnetic actuator with enclosure sleeve surrounding armature and at least one permanent magnet | |
| JP2020043274A (en) | Solenoid, solenoid valve, assembly method | |
| JP5494681B2 (en) | solenoid valve | |
| WO2002091403A3 (en) | Solenoid valve coil having an integrated bobbin and flux ring assembly | |
| WO2016129261A1 (en) | Linear solenoid | |
| EP1335127A3 (en) | Electromagnetic fuel injection valve | |
| JP5128224B2 (en) | solenoid valve | |
| JP2003185050A (en) | Solenoid valve | |
| JP7595419B2 (en) | Solenoid | |
| JP2009203991A (en) | Solenoid valve | |
| JP2009174623A (en) | Solenoid valve | |
| JP7650608B2 (en) | Solenoid valve | |
| JP2006038153A (en) | Method of manufacturing solenoid valve | |
| JP2000046225A (en) | Solenoid valve | |
| JP6736330B2 (en) | Solenoid valve cartridge assembly, solenoid valve solenoid and solenoid valve | |
| US9865385B2 (en) | Linear solenoid | |
| JP2004079565A (en) | Solenoid | |
| JPH0311858Y2 (en) | ||
| JPH1167527A (en) | Solenoid | |
| JP2003314731A (en) | Solenoid valve | |
| WO2024224630A1 (en) | Solenoid | |
| JP2001280531A (en) | Solenoid valve device | |
| JP2009203992A (en) | Solenoid valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20041129 |
|
| A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20041129 |
|
| A977 | Report on retrieval |
Effective date: 20070301 Free format text: JAPANESE INTERMEDIATE CODE: A971007 |
|
| A131 | Notification of reasons for refusal |
Effective date: 20071030 Free format text: JAPANESE INTERMEDIATE CODE: A131 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20080311 |