JPS595941Y2 - solenoid electromagnet - Google Patents
solenoid electromagnetInfo
- Publication number
- JPS595941Y2 JPS595941Y2 JP1977153698U JP15369877U JPS595941Y2 JP S595941 Y2 JPS595941 Y2 JP S595941Y2 JP 1977153698 U JP1977153698 U JP 1977153698U JP 15369877 U JP15369877 U JP 15369877U JP S595941 Y2 JPS595941 Y2 JP S595941Y2
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- auxiliary yoke
- yoke
- coil
- attractive force
- 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
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- Electromagnets (AREA)
Description
【考案の詳細な説明】 本考案はソレノイド形電磁石の改良に関する。[Detailed explanation of the idea] The present invention relates to improvements in solenoid type electromagnets.
電磁操作形しゃ断器においては、その接点の投入速度が
大切である。For electromagnetically operated circuit breakers, the closing speed of the contacts is important.
この投入速度が遅い場合には発弧現象が生じ、投入不能
になる場合があるからである。This is because if this charging speed is slow, an arcing phenomenon may occur and charging may become impossible.
しかも、電磁石による投入速度はその操作電圧の大きさ
によって変化するため、操作時の操作電圧の変動によっ
て投入速度が変化してしまう欠点がある。Furthermore, since the charging speed of the electromagnet changes depending on the magnitude of its operating voltage, there is a drawback that the charging speed changes depending on fluctuations in the operating voltage during operation.
本考案は上記の欠点を解決したソレノイド形電磁石を提
供するものである。The present invention provides a solenoid type electromagnet that solves the above-mentioned drawbacks.
次に図面について本考案の一実施例を従来と対比して説
明する。Next, an embodiment of the present invention will be explained with reference to the drawings in comparison with a conventional one.
第１図は従来の電磁操作形しゃ断器の要部を示し、１は
電磁石、２はプランジャー、３は投入状態を維持する爪
、４は図示しない開閉接触子を取付けた回転軸、５はリ
ンク機構である。Fig. 1 shows the main parts of a conventional electromagnetically operated circuit breaker. 1 is an electromagnet, 2 is a plunger, 3 is a claw that maintains the closed state, 4 is a rotating shaft with a switching contact (not shown) attached, and 5 is a rotating shaft. It is a link mechanism.
図示の状態は、プランジャー２がコイル内に突出した磁
極端面１Ａに吸引されたところを示している。The illustrated state shows the plunger 2 being attracted to the pole end face 1A protruding into the coil.
６はプランジャーのストッパーである。6 is a plunger stopper.
この構戊によるものは電磁石１を励磁した際、その駆動
特性、即ち、第２図に示す曲線７又は８のような駆動特
性であれば、負荷特性を示す曲線９より上回っているの
で投入操作が可能である。With this structure, when the electromagnet 1 is excited, if its driving characteristics, that is, the driving characteristics shown in curves 7 or 8 shown in FIG. is possible.
しかし、曲線７を得る電磁石である場合において、操作
時の操作電圧が定格電圧よりも小さい値であるときは、
その駆動特性となる曲線の軌跡は負荷特性の曲線９より
下回る場合があり、従ってその場合には投入不可能とな
ってしまう。However, in the case of an electromagnet that obtains curve 7, if the operating voltage during operation is a value smaller than the rated voltage,
The locus of the curve representing the drive characteristic may be lower than the curve 9 representing the load characteristic, and therefore, in that case, it becomes impossible to turn on the power.
一方、曲線８を得る電磁石であれば、負荷特性の曲線９
よりも遥かに上回るものであるので、操作電圧が多少減
じても投入動作に影響はしないが、投入エンドでの電磁
石の余剰エネルギーが過大となるため、投入時の衝撃が
大きく、これを吸収するためのダンパー装置が必要とな
る欠点がある。On the other hand, if the electromagnet obtains curve 8, the load characteristic curve 9
, so even if the operating voltage is reduced somewhat, it will not affect the closing operation, but the surplus energy of the electromagnet at the closing end will be excessive, so the shock at closing will be large, and this will be absorbed. The disadvantage is that a damper device is required.
次に第３図について本考案の実施例を説明する。Next, an embodiment of the present invention will be described with reference to FIG.
同図において、１１はコイル、１２は主ヨークである。In the figure, 11 is a coil, and 12 is a main yoke.
コイル１１の巻枠１３の中心部には主ヨークと一体の磁
極端面１２Ａが形或され、更にその中心を貫いてプラン
ジャー２の軸２Ａが通されている。A magnetic pole end face 12A integral with the main yoke is formed at the center of the winding frame 13 of the coil 11, and the shaft 2A of the plunger 2 passes through the center thereof.
このプランジャー２は図示しないリンク機構によって図
示の状態に置かれている。This plunger 2 is placed in the illustrated state by a link mechanism (not shown).
そして、符号１４は主ヨーク１２より外方に突出し、か
つプランジャー２を取り囲むように設けられた磁性体か
らなる補助ヨークであって、プランジャー２のストッパ
ーともなっている。Reference numeral 14 denotes an auxiliary yoke made of a magnetic material that projects outward from the main yoke 12 and surrounds the plunger 2, and also serves as a stopper for the plunger 2.
図示のように、補助ヨーク１４の中心部には中空孔１５
が形威され、プランジャー２の上端面と接する面は環状
面となっている。As shown in the figure, a hollow hole 15 is provided in the center of the auxiliary yoke 14.
The surface in contact with the upper end surface of the plunger 2 is an annular surface.
１６はスペーサーであって、主ヨーク１２とプランジャ
ー２との間に空隙ｇが形或されている。A spacer 16 forms a gap g between the main yoke 12 and the plunger 2.
いま、コイル１１を励磁すると、コイル１１の励磁初期
には、プランジャー２と主ヨーク１２との間には空隙ｇ
があるため、ここを通る磁束φは小さく、他方、プラン
ジャー２と補助ヨーク１４との間には空隙がないため、
ここを通る磁束φ１は大きい。Now, when the coil 11 is excited, there is a gap g between the plunger 2 and the main yoke 12 at the initial stage of excitation of the coil 11.
Therefore, the magnetic flux φ passing through this point is small, and on the other hand, since there is no air gap between the plunger 2 and the auxiliary yoke 14,
The magnetic flux φ1 passing through this point is large.
従って、励磁の初期にはプランジャー２は補助ヨーク１
４を通る磁束φ、によって吸引された状態となるが、コ
イル１１に流れる電流が時間の経過と共に徐々に増加し
て行くと、プランジャー２と補助ヨーク１４との接する
環状の磁極面は磁気飽和してしまい、その磁束φ１はさ
程増加しない状態となる。Therefore, at the beginning of excitation, the plunger 2 is connected to the auxiliary yoke 1.
However, as the current flowing through the coil 11 gradually increases over time, the annular magnetic pole surface where the plunger 2 and the auxiliary yoke 14 are in contact becomes magnetically saturated. As a result, the magnetic flux φ1 does not increase much.
一方、プランジャー２と磁極端面１２Ａとの間の吸引力
、即ち磁束φは増々増大することによって吸引力が強ま
り、この値が前述の補助ヨークにおける吸引力を上回る
と、プランジャー２は補助ヨークから離れ、磁極端面１
２Ａに吸着される。On the other hand, as the attractive force between the plunger 2 and the magnetic flux φ increases, the attractive force becomes stronger, and when this value exceeds the above-mentioned attractive force in the auxiliary yoke, the plunger 2 moves into the auxiliary yoke. away from the pole end face 1
It is adsorbed by 2A.
これを駆動特性で表わすと、第２図の曲線１０で示すよ
うになる。If this is expressed in terms of drive characteristics, it will be as shown by curve 10 in FIG.
即ち、ストロークの小さいスタート位置ではトルクが大
きく、投入エンドでは余剰エネルギーが小さくかつ電磁
石も小さいままで、所期の目的を達威することができる
。That is, at the start position where the stroke is small, the torque is large, and at the input end, the surplus energy is small and the electromagnet remains small, so that the intended purpose can be achieved.
第４図は異なる実施例を示す。FIG. 4 shows a different embodiment.
第３図と同一部分には同一符号を付す。The same parts as in FIG. 3 are given the same reference numerals.
この実施例においては、プランジャー２の端面に中空穴
２Ｂを作り、一枚物の補助ヨーク１７に対向させる。In this embodiment, a hollow hole 2B is formed in the end face of the plunger 2, and the hollow hole 2B is made to face the auxiliary yoke 17 made of a single piece.
これにより、プランジャーと補助ヨークとは環状の磁極
面を介して接することとなり、従って、第３図の場合と
同様に、環状の磁極面を通る磁束φ１が或る値まで上昇
するとそこで飽和現象が生ずる。As a result, the plunger and the auxiliary yoke come into contact through the annular magnetic pole surface, and therefore, as in the case of Fig. 3, when the magnetic flux φ1 passing through the annular magnetic pole surface increases to a certain value, saturation phenomenon occurs there. occurs.
その後、励磁電流の増加により、主ヨーク１２を通る磁
束φが増し、プランジャー２は磁極端面１２Ａに吸引さ
れる。Thereafter, due to an increase in the excitation current, the magnetic flux φ passing through the main yoke 12 increases, and the plunger 2 is attracted to the pole end face 12A.
以上のように、本考案によれば、電磁石の主ヨークより
外方に突出した磁性体からなる補助ヨークを設け、プラ
ンジャーと補助ヨークとが接する磁極面が相対的に環状
の磁極面をなすように形威したから、コイルに励磁電流
を流したときから或る時間の間はプランジャーは駆動せ
ず、その後、一気に駆動して動作を終ることとなる。As described above, according to the present invention, an auxiliary yoke made of a magnetic material that protrudes outward from the main yoke of the electromagnet is provided, and the magnetic pole surface where the plunger and the auxiliary yoke are in contact forms a relatively annular magnetic pole surface. As a result, the plunger will not be driven for a certain period of time after the excitation current is applied to the coil, and then it will be driven all at once to complete its operation.
従って、電磁石が小型のものであっても、トルク対スト
ローク特性は第２図において符号１０で示すような特性
曲線を得ることができる。Therefore, even if the electromagnet is small, a characteristic curve 10 in FIG. 2 can be obtained for the torque versus stroke characteristic.
つまり、初期駆動力が大きく、投入エンドでの衝撃力が
小さい良好な電磁石を得ることができる。In other words, it is possible to obtain a good electromagnet with a large initial driving force and a small impact force at the input end.
なお、第５図はストローク対時間の関係を示す線図で、
符号１９は本考案による主接触部の投入特性を示し、符
号１８は従来の特性を示す。In addition, FIG. 5 is a diagram showing the relationship between stroke and time.
Reference numeral 19 indicates the closing characteristic of the main contact portion according to the present invention, and reference numeral 18 indicates the conventional characteristic.
また、補助ヨークの穴径またはプランジャーの中空穴径
を変えれば、環状の磁極面の大きさが変えられるので、
そのことにより容易に反力の制御が可能となリ、シかも
例えば特公昭５２−６９７１に見られるような投入エン
ドの吸引力増をも期待する補助鉄心や第２の可動鉄心を
設ける必要がなく、構造が非常に簡単になる。Also, by changing the hole diameter of the auxiliary yoke or the hollow hole diameter of the plunger, the size of the annular magnetic pole surface can be changed.
This makes it possible to easily control the reaction force.For example, it is necessary to provide an auxiliary iron core or a second movable iron core, which is expected to increase the suction force at the input end, as seen in Japanese Patent Publication No. 52-6971. The structure becomes very simple.
なお、補助ヨークの穴径またはプランジャーの中空穴径
は、投入操作電圧の約７０％程度で補助ヨークからプラ
ンジャーに分路する磁束がプランジャーと補助ヨークと
の接触面で飽和するように選ぶのがよい。The hole diameter of the auxiliary yoke or the hollow hole diameter of the plunger is set so that the magnetic flux shunted from the auxiliary yoke to the plunger is saturated at the contact surface between the plunger and the auxiliary yoke at approximately 70% of the closing operation voltage. It's good to choose.
かくすることにより投入操作電圧の変動範囲７５から１
１０％の範囲で投入スピードが平坦な特性のものが得ら
れる。By doing this, the variation range of the closing operation voltage is 75 to 1
A characteristic in which the feeding speed is flat within a range of 10% can be obtained.
更に、第４図に示すようにプランジャー２に穴を形成す
る場合には、その加工が増えるが、穴の体積分だけ軽量
になるというメリットがある。Furthermore, if a hole is formed in the plunger 2 as shown in FIG. 4, the amount of processing increases, but there is an advantage that the weight is reduced by the volume of the hole.
第１図は従来の投入装置の側面図、第２図は説明のため
の線図、第３図及び第４図はそれぞれ本考案の実施例を
示す要部断面図、第５図は説明のための線図である。
１は電磁石、２はプランジャー、３は爪、４は回転軸、
５はリンク機構、６はストッパー、１１はコイル、１２
は主ヨーク、１３は巻枠、１４は補助ヨーク、１５は孔
、１６はスペーサー、１７は補助ヨークである。Fig. 1 is a side view of a conventional loading device, Fig. 2 is a diagram for explanation, Figs. 3 and 4 are sectional views of main parts showing an embodiment of the present invention, and Fig. 5 is a diagram for explanation. This is a diagram for 1 is an electromagnet, 2 is a plunger, 3 is a claw, 4 is a rotating shaft,
5 is a link mechanism, 6 is a stopper, 11 is a coil, 12
13 is a main yoke, 13 is a winding frame, 14 is an auxiliary yoke, 15 is a hole, 16 is a spacer, and 17 is an auxiliary yoke.
Claims (1)
端が接するコイル内に突出した磁極端面と反対側に、コ
イルを囲む主ヨークより外方に突出した磁性体からなる
補助ヨークを設けるとともに該補助ヨークと前記プラン
ジャーの他端とが接する磁極面をそのどちらか一方に設
けたプランジャー径より小さい径の穴により環状面とし
、コイルを励磁した際、その初期においては前記プラン
ジャーと補助ヨークとの間に働く吸引力によってプラン
ジャーは働かず、その後前記補助ヨークを通る磁束に飽
和が生じ前記プランジャーと主ヨークとの間の吸引力が
前記プランジャーと補助ヨークとの間の吸引力よりも勝
ることによって前記プランジャーが動き始めるようにし
たことを特徴とするソレノイド形電磁石。In the solenoid type electromagnet, an auxiliary yoke made of a magnetic material that protrudes outward from the main yoke surrounding the coil is provided on the opposite side of the pole end surface that protrudes into the coil, which is in contact with one end of the cylindrical plunger. The magnetic pole surface in contact with the other end of the plunger is made into an annular surface by a hole with a diameter smaller than the plunger diameter provided on either side, and when the coil is excited, there is a gap between the plunger and the auxiliary yoke at the initial stage. The plunger does not work due to the attractive force acting on the auxiliary yoke, and then the magnetic flux passing through the auxiliary yoke saturates, and the attractive force between the plunger and the main yoke exceeds the attractive force between the plunger and the auxiliary yoke. A solenoid type electromagnet characterized in that the plunger starts moving by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977153698U JPS595941Y2 (en) | 1977-11-16 | 1977-11-16 | solenoid electromagnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977153698U JPS595941Y2 (en) | 1977-11-16 | 1977-11-16 | solenoid electromagnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5479460U JPS5479460U (en) | 1979-06-06 |
| JPS595941Y2 true JPS595941Y2 (en) | 1984-02-23 |
Family
ID=29141118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977153698U Expired JPS595941Y2 (en) | 1977-11-16 | 1977-11-16 | solenoid electromagnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS595941Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4328185B2 (en) * | 2003-11-19 | 2009-09-09 | 株式会社日本Ａｅパワーシステムズ | electromagnet |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS526971A (en) * | 1975-07-07 | 1977-01-19 | Hitachi Ltd | Electromagnet device |
-
1977
- 1977-11-16 JP JP1977153698U patent/JPS595941Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS526971A (en) * | 1975-07-07 | 1977-01-19 | Hitachi Ltd | Electromagnet device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5479460U (en) | 1979-06-06 |
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