JPH0118943Y2 - - Google Patents
Info
- Publication number
- JPH0118943Y2 JPH0118943Y2 JP1981002293U JP229381U JPH0118943Y2 JP H0118943 Y2 JPH0118943 Y2 JP H0118943Y2 JP 1981002293 U JP1981002293 U JP 1981002293U JP 229381 U JP229381 U JP 229381U JP H0118943 Y2 JPH0118943 Y2 JP H0118943Y2
- Authority
- JP
- Japan
- Prior art keywords
- armature
- permanent magnet
- outer frame
- annular
- annular plate
- 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.)
- Expired
Links
- 230000005291 magnetic effect Effects 0.000 claims description 25
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 claims description 13
- 230000004907 flux Effects 0.000 claims description 12
- 239000000696 magnetic material Substances 0.000 claims description 8
- 230000005294 ferromagnetic effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
Landscapes
- Magnetically Actuated Valves (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は電磁弁、特に、環状永久磁石を設けた
電磁弁に関する。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a solenoid valve, and particularly to a solenoid valve provided with an annular permanent magnet.
最近、電磁弁において、消費電力を低減し且つ
電磁コイルの電磁雑音を低減するために、永久磁
石を用いて強磁性体のアーマチヤを弁のオープン
位置あるいはクローズ位置に保持することが行わ
れるようになつた。すなわち、この場合、アーマ
チヤの位置の変更時のみに電磁コイルに電流を供
給し、他の場合には電磁コイルに電流を供給しな
いようにする。
Recently, in order to reduce power consumption and electromagnetic noise of the electromagnetic coil in solenoid valves, permanent magnets have been used to hold the ferromagnetic armature in the open or closed position of the valve. Summer. That is, in this case, current is supplied to the electromagnetic coil only when the position of the armature is changed, and no current is supplied to the electromagnetic coil in other cases.
従来、電磁弁に永久磁石を設ける場合、電磁弁
の上部キヤツプ部分を永久磁石として構成してい
る（参照：特開昭51−80024号公報）。この結果、
アーマチヤは永久磁石に励磁吸着するときに永久
磁石に激突し、これにより、永久磁石の磁力が次
第に低下するという問題点がある。 Conventionally, when a permanent magnet is provided in a solenoid valve, the upper cap portion of the solenoid valve is constructed as a permanent magnet (see Japanese Patent Application Laid-Open No. 51-80024). As a result,
There is a problem in that the armature collides with the permanent magnet when it is excited and attracted to the permanent magnet, and as a result, the magnetic force of the permanent magnet gradually decreases.
このため、環状永久磁石をアーマチヤの衝突箇
所から遠く離れた電磁弁の下部に設けた電磁弁が
知られている（参照：実公昭55−31331号公報、
実開昭51−93422号公報、実開昭51−93950号公
報）。しかしながら、これらの電磁弁においては、
永久磁石の磁束方向が径方向にあつて永久磁石の
大型化を招いたり、また、永久磁石の磁束がアー
マチヤに効率的に到達せず、このため、やはり、
永久磁石の大型化を招き、ひいては、製造コスト
の上昇を招くという課題がある。
For this reason, a solenoid valve is known in which an annular permanent magnet is provided at the bottom of the solenoid valve far away from the armature collision point (see: Japanese Utility Model Publication No. 55-31331,
Utility Model Application No. 51-93422, Utility Model Application No. 51-93950). However, in these solenoid valves,
The magnetic flux direction of the permanent magnet is in the radial direction, leading to an increase in the size of the permanent magnet, and the magnetic flux of the permanent magnet does not reach the armature efficiently.
There is a problem in that this leads to an increase in the size of the permanent magnet, which in turn leads to an increase in manufacturing costs.
したがつて、本考案の目的は、電磁弁の永久磁
石を小型化して製造コストを低減することにあ
る。 Therefore, an object of the present invention is to downsize the permanent magnet of a solenoid valve and reduce manufacturing costs.
上述の課題を解決するために本考案は磁性体か
らなる上部キヤツプ、該上部キヤツプを上部に支
持し淵部を下部内側に有した逆コツプ状外枠およ
び下部環状プレートと、該逆コツプ状外枠の下部
淵部と該下部環状プレートとの間に配設され、該
下部環状プレートの外径とほぼ同一の外径を有
し、磁束方向が上下方向である環状永久磁石と、
前記下部環状プレートの下端に位置する弁と、前
記逆コツプ状外枠の中心を上下可動に設けられ前
記弁の結合可能な強磁性体のアーマチヤと、前記
逆コツプ状外枠の内側に設けられた電磁コイル
と、を具備し、前記逆コツプ状外枠の下部淵部の
内径は前記環状永久磁石の磁束が前記アーマチヤ
に影響しないだけ前記アーマチヤの外径より大き
くして該下部淵部と前記アーマチヤとの間の前記
環状永久磁石の磁束を小さくし且つ前記環状永久
磁石の内径とほぼ同一であり、前記下部環状プレ
ートの環状穴の内径を前記アーマチヤの外径に十
分近づけ、前記アーマチヤを前記逆コツプ状外枠
の下部淵部及び前記下部環状プレートの環状穴に
通し、これにより、前記環状永久磁石の磁束の大
部分が前記下部環状プレートを介して前記アーマ
チヤに到達するようにしたものである。
In order to solve the above-mentioned problems, the present invention includes an upper cap made of a magnetic material, an inverted cup-shaped outer frame and a lower annular plate that support the upper cap at the upper part and have an edge inside the lower part, and the inverted cup-shaped outer frame. an annular permanent magnet that is disposed between the lower edge of the frame and the lower annular plate, has an outer diameter that is approximately the same as the outer diameter of the lower annular plate, and has a magnetic flux direction in the up-down direction;
a valve located at the lower end of the lower annular plate; a ferromagnetic armature that is movable up and down about the center of the inverted top-shaped outer frame and is connectable to the valve; and a ferromagnetic armature provided inside the inverted top-shaped outer frame. an electromagnetic coil, the inner diameter of the lower edge of the inverted top-shaped outer frame being larger than the outer diameter of the armature so that the magnetic flux of the annular permanent magnet does not affect the armature, and the lower edge and the The magnetic flux of the annular permanent magnet between the armature and the armature is reduced, and the inner diameter of the annular permanent magnet is substantially the same, and the inner diameter of the annular hole of the lower annular plate is sufficiently close to the outer diameter of the armature. It passes through the lower edge of the inverted top-shaped outer frame and the annular hole of the lower annular plate, so that most of the magnetic flux of the annular permanent magnet reaches the armature via the lower annular plate. be.
第１図および第２図は本考案の一実施例として
の電磁弁の断面図であつて、第１図は閉弁状態を
示し、第２図は開弁状態を示す。第１図におい
て、磁性体である逆コツプ状の外枠１の上端およ
び下端に磁性体よりなるキヤツプ２および環状の
プレート３が設けられており、外枠１の中央部に
スプリング６によつて押圧された強磁性体よりな
るアーマチヤ４が上下移動可能に設けられてい
る。また、枠１の下部淵部とプレート３との間に
環状の永久磁石５が設けられ、枠１内の周囲には
電磁コイル７が設けられている。
FIGS. 1 and 2 are cross-sectional views of a solenoid valve as an embodiment of the present invention, with FIG. 1 showing the valve in a closed state and FIG. 2 showing the valve in an open state. In FIG. 1, a cap 2 and an annular plate 3 made of a magnetic material are provided at the upper and lower ends of an inverted cup-shaped outer frame 1 made of a magnetic material, and a spring 6 is attached to the center of the outer frame 1. An armature 4 made of a pressed ferromagnetic material is provided to be movable up and down. Further, an annular permanent magnet 5 is provided between the lower edge of the frame 1 and the plate 3, and an electromagnetic coil 7 is provided around the inside of the frame 1.
また、外枠１の下部には、アーマチヤ１の収納
管（磁性体）９より大きく且つ永久磁石５の内径
とほぼ同一の環状穴が設けられている。すなわ
ち、外枠１の下部淵部の内径をアーマチヤ４の外
径より十分大きくし、また、下部環状プレート３
の内径をアーマチヤ４の外径に十分近づけ、これ
により、永久磁石５と外枠１との間の磁気抵抗
は、外枠１もしくは永久磁石とアーマチヤ４との
間の磁気抵抗より非常に小さくし、他方、下部環
状プレート３とアーマチヤ４との間の磁気抵抗も
非常に小さくする。したがつて、外枠１を介して
の永久磁石５の磁束はアーマチヤへの影響は小さ
くなり、永久磁石５の磁束の大部分は下部環状プ
レート３を介してアーマチヤ４へ到達することに
なる。 Further, in the lower part of the outer frame 1, an annular hole is provided which is larger than the storage tube (magnetic material) 9 of the armature 1 and has approximately the same inner diameter as the permanent magnet 5. That is, the inner diameter of the lower edge of the outer frame 1 is made sufficiently larger than the outer diameter of the armature 4, and the lower annular plate 3 is made sufficiently larger than the outer diameter of the armature 4.
The inner diameter of the armature 4 is made sufficiently close to the outer diameter of the armature 4, so that the magnetic resistance between the permanent magnet 5 and the outer frame 1 is much smaller than that between the outer frame 1 or the permanent magnet and the armature 4. On the other hand, the magnetic resistance between the lower annular plate 3 and the armature 4 is also made very small. Therefore, the magnetic flux of the permanent magnet 5 passing through the outer frame 1 has less influence on the armature, and most of the magnetic flux of the permanent magnet 5 reaches the armature 4 via the lower annular plate 3.
アーマチヤ４は２つの位置のいずれかに安定的
に保持される。すなわち、第１の位置は第１図に
示すようにスプリング６により押圧されて保持さ
れる位置であり、この場合、弁座８は閉じられ
る。他方、第２の位置は第２図に示すように永久
磁石５によつて保持される位置であり、この場
合、弁座８は開放され、矢印に示すごとく流体た
とえば空気が流れることができる。 The armature 4 is stably held in one of two positions. That is, the first position is a position where the valve seat 8 is pressed and held by the spring 6 as shown in FIG. 1, and in this case, the valve seat 8 is closed. On the other hand, the second position is the position held by the permanent magnet 5 as shown in FIG. 2, in which case the valve seat 8 is open and fluid, such as air, can flow as shown by the arrow.
アーマチヤ４を上述の２つの位置間を移動させ
る力は電磁コイル７を励磁することにより行われ
る。たとえば、第１図の閉弁状態において、電磁
コイル７に一方向の直流電流を流して電磁コイル
７による磁界方向を永久磁石５の磁界方向と同一
にすると、電磁コイル７の磁力と永久磁石５の吸
引力との和がスプリング６の押圧力より大きくな
り、この結果、アーマチヤ４は上昇して第２図の
状態となる。ここで、電磁コイル７の電流は停止
しても永久磁石５の磁力によりこの状態は保持さ
れる。すなわち、第２図において、磁性体要素１
−５−３−４−２のループに永久磁石５による磁
気回路が形成され、電磁コイル７に電流がなくな
つても、該磁気回路は保持される。 The force for moving the armature 4 between the two positions mentioned above is achieved by energizing the electromagnetic coil 7. For example, in the closed state of FIG. 1, if a unidirectional DC current is applied to the electromagnetic coil 7 to make the magnetic field direction of the electromagnetic coil 7 the same as the magnetic field direction of the permanent magnet 5, the magnetic force of the electromagnetic coil 7 and the permanent magnet 5 The sum of the suction force and the pressing force of the spring 6 becomes greater than the pressing force of the spring 6, and as a result, the armature 4 rises to the state shown in FIG. Here, even if the current in the electromagnetic coil 7 is stopped, this state is maintained by the magnetic force of the permanent magnet 5. That is, in FIG. 2, the magnetic element 1
A magnetic circuit is formed by the permanent magnet 5 in the -5-3-4-2 loop, and even if the electromagnetic coil 7 loses current, the magnetic circuit is maintained.
また、第２図の開弁状態において、電磁コイル
７に前述と逆方向の電流を流すと、磁界が永久磁
石５の磁界と反対方向に発生し、この結果、アー
マチヤ４には永久磁石５の磁界に対して反撥磁力
が発生してスプリング６の押圧と相まつて、アー
マチヤ４をキヤツプ２から引離す。従つて、アー
マチヤ４は下降して再び第１図の状態となる。こ
の場合、キヤツプ２とアーマチヤ４との間に空隙
が存在するので、電磁コイル７に電流がなくなる
と前述の永久磁石５による磁気回路は形成されな
い。 Furthermore, when a current is applied to the electromagnetic coil 7 in the opposite direction to that described above in the open state shown in FIG. 2, a magnetic field is generated in the opposite direction to that of the permanent magnet 5. A repelling force is generated in response to the magnetic field, and together with the pressure of the spring 6, the armature 4 is separated from the cap 2. Therefore, the armature 4 descends to the state shown in FIG. 1 again. In this case, since there is an air gap between the cap 2 and the armature 4, when the electromagnetic coil 7 loses current, the above-mentioned magnetic circuit by the permanent magnet 5 is not formed.
また、上述の実施例においては、アーマチヤ４
を下方に移動するためにスプリング６を用いてい
るが、スプリング６は必ずしも必要としない。た
とえば、アーマチヤ４自身の重力によつて下方に
移動させることができる。 Furthermore, in the above embodiment, the armature 4
Although the spring 6 is used to move the body downward, the spring 6 is not necessarily required. For example, it can be moved downward by the gravity of the armature 4 itself.
以上説明したように本考案によれば、永久磁石
を小型化でき、したがつて、電磁弁の製造コスト
の低減に役立つものである。
As explained above, according to the present invention, it is possible to downsize the permanent magnet, and therefore it is useful for reducing the manufacturing cost of the solenoid valve.
第１図および第２図は本考案の一実施例として
の電磁弁の断面図である。
１……逆コツプ状外枠（磁性体）、２……キヤ
ツプ（磁性体）、３……環状プレート（磁性体）、
４……アーマチヤ（強磁性体）、５……環状の永
久磁石、６……スプリング、７……電磁コイル、
８……弁座、９……収納管。
1 and 2 are cross-sectional views of a solenoid valve as an embodiment of the present invention. 1... Inverted cup-shaped outer frame (magnetic material), 2... Cap (magnetic material), 3... Annular plate (magnetic material),
4... Armature (ferromagnetic material), 5... Annular permanent magnet, 6... Spring, 7... Electromagnetic coil,
8... Valve seat, 9... Storage pipe.
Claims (1)
プを上部に支持し淵部を下部内側に有した逆コツ
プ状外枠１および下部環状プレート３と、 該逆コツプ状外枠の下部淵部と該下部環状プレ
ートとの間に配設され、該下部環状プレートの外
径とほぼ同一の外径を有し、磁束方向が上下方向
である環状永久磁石５と、 前記下部環状プレートの下端に位置する弁８
と、 前記逆コツプ状外枠の中心を上下可動に設けら
れ前記弁の結合可能な強磁性体のアーマチヤ４
と、 前記逆コツプ状外枠の内側に設けられた電磁コ
イル７と、 を具備し、 前記逆コツプ状外枠の下部淵部の内径は前記環
状永久磁石の磁束が前記アーマチヤに影響しない
だけ前記アーマチヤの外径より大きくして該下部
淵部と前記アーマチヤとの間の前記環状永久磁石
の磁束を小さくし且つ前記環状永久磁石の内径と
ほぼ同一であり、前記下部環状プレートの環状穴
の内径を前記アーマチヤの外径に十分近づけ、前
記アーマチヤを前記逆コツプ状外枠の下部淵部及
び前記下部環状プレートの環状穴に通し、これに
より、前記環状永久磁石の磁束の大部分が前記下
部環状プレートを介して前記アーマチヤに到達す
るようにした電磁弁。[Claims for Utility Model Registration] An upper cap 2 made of a magnetic material, an inverted cup-shaped outer frame 1 and a lower annular plate 3 that support the upper cap on the upper side and have an edge inside the lower part, and the inverted cup-shaped outer frame 1. an annular permanent magnet 5 disposed between the lower edge of the frame and the lower annular plate, having an outer diameter substantially the same as the outer diameter of the lower annular plate, and having a magnetic flux direction in the up-down direction; Valve 8 located at the lower end of the annular plate
and a ferromagnetic armature 4 that is movable up and down at the center of the inverted top-shaped outer frame and that can be coupled to the valve.
and an electromagnetic coil 7 provided inside the inverted top-shaped outer frame, and the inner diameter of the lower edge of the inverted top-shaped outer frame is set so that the magnetic flux of the annular permanent magnet does not affect the armature. The inner diameter of the annular hole in the lower annular plate is larger than the outer diameter of the armature to reduce the magnetic flux of the annular permanent magnet between the lower edge and the armature, and is approximately the same as the inner diameter of the annular permanent magnet. is sufficiently close to the outer diameter of the armature, and the armature is passed through the lower edge of the inverted top-shaped outer frame and the annular hole of the lower annular plate, so that most of the magnetic flux of the annular permanent magnet is transferred to the lower annular plate. A solenoid valve that reaches the armature via a plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981002293U JPH0118943Y2 (en) | 1981-01-13 | 1981-01-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981002293U JPH0118943Y2 (en) | 1981-01-13 | 1981-01-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57115471U JPS57115471U (en) | 1982-07-17 |
| JPH0118943Y2 true JPH0118943Y2 (en) | 1989-06-01 |
Family
ID=29800732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981002293U Expired JPH0118943Y2 (en) | 1981-01-13 | 1981-01-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0118943Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5531331U (en) * | 1978-08-19 | 1980-02-29 |
-
1981
- 1981-01-13 JP JP1981002293U patent/JPH0118943Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5531331U (en) * | 1978-08-19 | 1980-02-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57115471U (en) | 1982-07-17 |
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