JP3166556B2 - Electromagnetic device of electromagnetic contactor - Google Patents
Electromagnetic device of electromagnetic contactorInfo
- Publication number
- JP3166556B2 JP3166556B2 JP11806895A JP11806895A JP3166556B2 JP 3166556 B2 JP3166556 B2 JP 3166556B2 JP 11806895 A JP11806895 A JP 11806895A JP 11806895 A JP11806895 A JP 11806895A JP 3166556 B2 JP3166556 B2 JP 3166556B2
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- JP
- Japan
- Prior art keywords
- bottom plate
- plate
- electromagnetic contactor
- ferromagnetic
- electromagnet device
- 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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Description
【０００１】[0001]
【産業上の利用分野】この発明は、可動接触子の投入駆
動に電磁石を用いる電磁接触器の電磁石装置に関し、よ
り詳しくは、可動接触子を保持する可動接触子支えに連
結された可動鉄心を吸引する固定鉄心が、これらの鉄心
を収容する電磁接触器固定フレームの下端面を閉鎖する
底板に複数の柱状脚部鉄心を立設，固定してなる電磁接
触器の電磁石装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnet device for an electromagnetic contactor using an electromagnet to drive a movable contact, and more particularly, to a movable iron core connected to a movable contact support for holding the movable contact. The present invention relates to an electromagnetic contactor electromagnet device in which a plurality of pillar-shaped leg cores are erected and fixed on a bottom plate for closing a lower end surface of an electromagnetic contactor fixing frame for accommodating these cores.
【０００２】[0002]
【従来の技術】この種電磁石装置を備えた電磁接触器と
して、従来広く用いられている橋絡形電磁接触器構成の
一例を図１１に示す。この例では、電磁接触器は、開閉
接触部１と電磁石装置２とからなり、開閉接触部１は上
部ケース３の上側外部に設けられ、一端に固定接点４
ａ、他端に端子ねじ４ｂを有する２つのコ字状固定接触
子４が両固定接点４ａ，４ａを内側にして上部ケース３
の上面に取り付けられている。この相対する固定接触子
４−４の間には可動接触子支え５が上部ケース３と下部
ケース１３とからなる固定フレームに収納された電磁石
装置２の可動鉄心６にピン７により連結され上下方向へ
滑動自在にされている。可動接触支え５には２つの固定
接触子４−４に取り付けられた固定接点４ａ−４ａ間を
橋絡可能とする可動接点８ａ−８ａを有する可動接触子
８が接触ばね９を介して取り付けられている。この固定
接触子と可動接触子８とが形成する開閉接触部１は消孤
カバー１０により覆われる。上部ケース３と，下部ケー
ス１３と，下部ケースの下端面を閉鎖する，強磁性材か
らなる底板１７とで画成される空間内に収納される電磁
石装置２は、底板１７に固定されてコイル１１が嵌め込
まれる固定鉄心１２と、コイル１１と、固定鉄心１２に
対向し、復帰ばね１４に支えられた可動鉄心６とからな
り、この可動鉄心６が固定鉄心１２に吸引，釈放される
ことにより可動接触子支え５が上下方向に滑動する。固
定鉄心１２は、この例では、コ字状に形成され、コ字の
対向２辺が固定鉄心１２中の脚部鉄心を構成し、中央片
がこの２つの脚部鉄心の各底板１７側端部間の磁路を構
成している。2. Description of the Related Art FIG. 11 shows an example of the configuration of a bridge-type electromagnetic contactor that has been widely used in the past as an electromagnetic contactor having such an electromagnet device. In this example, the electromagnetic contactor includes an opening / closing contact portion 1 and an electromagnet device 2 , and the opening / closing contact portion 1 is provided outside the upper case 3 and has a fixed contact 4 at one end.
a, two U-shaped fixed contacts 4 each having a terminal screw 4b at the other end, the upper case 3 having both fixed contacts 4a, 4a inside.
It is attached to the upper surface of. A movable contact support 5 is connected to the movable iron core 6 of the electromagnet device 2 housed in a fixed frame composed of the upper case 3 and the lower case 13 by pins 7 between the opposed fixed contacts 4-4, and the movable contact support 5 is vertically moved. It is slidable. A movable contact 8 having movable contacts 8a-8a that enables bridging between the fixed contacts 4a-4a attached to the two fixed contacts 4-4 is attached to the movable contact support 5 via a contact spring 9. ing. The opening / closing contact portion 1 formed by the fixed contact and the movable contact 8 is covered with an extinction cover 10. The electromagnet device 2 housed in the space defined by the upper case 3, the lower case 13, and the bottom plate 17 made of a ferromagnetic material, which closes the lower end surface of the lower case, is fixed to the bottom plate 17, and is coiled. The movable iron core 6 includes a fixed iron core 11 into which the coil 11 is fitted, a coil 11, and a movable iron core 6 opposed to the fixed iron core 12 and supported by a return spring 14. The movable iron core 6 is attracted and released by the fixed iron core 12. The movable contact support 5 slides vertically. In this example, the fixed iron core 12 is formed in a U-shape, and two opposite sides of the U-shape constitute a leg core in the fixed iron core 12, and a central piece is a side end of each of the two leg iron cores on the bottom plate 17. It forms a magnetic path between the parts.
【０００３】このような構成において、コイル１１の励
磁を断ち、可動鉄心６を復帰ばね１４の力で固定鉄心１
２から釈放させると、可動接触子支え５は可動接点８ａ
を固定接点４ａから引離し、電磁接触器を開成する。こ
こで再びコイル１１に通電し、固定鉄心１２が可動鉄心
６を吸引すると、可動接点８ａは固定接点４ａに接触
し、電磁接触器を閉成する。In such a configuration, the excitation of the coil 11 is stopped, and the movable core 6 is moved by the force of the return spring 14 to the fixed core 1.
2, the movable contact support 5 becomes movable contact 8a.
From the fixed contact 4a to open the electromagnetic contactor. When the coil 11 is energized again and the fixed core 12 attracts the movable core 6, the movable contact 8a comes into contact with the fixed contact 4a to close the electromagnetic contactor.
【０００４】以上のような電磁石装置２を有する電磁接
触器において、コイル１１への印加電圧が交流の場合に
は、鉄心内のうず電流損失を最小限に抑えるこめに、可
動鉄心６および固定鉄心１２は図１２に示すように、表
面を絶縁コーティングされた薄板の鉄板１２ａを多数重
ねて、リベット１５でかしかめて固定して製作する必要
があった。ところが、印加電圧が直流であったり、印加
電圧が交流でもそれを整流する機能を備えた電磁石装置
においては、うず電流による損失を無視し得るので、鉄
心の構成としては、塊状のものでもよいのであるから、
焼結材や異形引抜き、押出し成形品や、あるいは図１２
に示す板厚ｔが厚いものを用いて図１２に示した形状の
ブロックを形成しても十分な性能を得ることができる。
しかし、焼結材や異形引抜き材は素材が高価であり、ま
た押出し成形品や図１２のような積層構造のものも高価
となるため、そのような場合の電磁石装置の構成として
は従来から図１３のような構成が一般にとられていた。
図１３において、固定鉄心は鋼の厚板材から切り出した
２つの脚部鉄心１６と，鋼板からなる底板１７とにより
構成されている。また、底板１７はねじ１８によって注
型樹脂からなる下部ケース１３に固定されていて、脚部
鉄心１６は底板１７にねじ１９で固定されている。In the electromagnetic contactor having the above-described electromagnet device 2 , when the voltage applied to the coil 11 is AC, the movable iron core 6 and the fixed iron core are used to minimize the eddy current loss in the iron core. As shown in FIG. 12, it was necessary to fabricate 12 by laminating a large number of thin iron plates 12 a whose surfaces were coated with insulation and caulking them with rivets 15. However, in an electromagnet device having a function of rectifying an applied voltage of DC or an applied voltage of AC, even if the applied voltage is AC, a loss due to eddy current can be ignored. because there is,
Sintered material, deformed drawing, extruded product, or Fig. 12
A sufficient performance can be obtained even if a block having the shape shown in FIG.
However, the material of the sintered material or the deformed drawn material is expensive, and the extruded product or the laminated structure as shown in FIG. 12 is also expensive. A configuration such as 13 was generally adopted.
In FIG. 13, the fixed iron core is constituted by two leg iron cores 16 cut out from a steel thick plate material and a bottom plate 17 made of a steel plate. The bottom plate 17 is fixed to the lower case 13 made of a casting resin by screws 18, and the leg core 16 is fixed to the bottom plate 17 by screws 19.
【０００５】ところで、図１１，図１３に示すような構
造の電磁石装置においては、コイル１１の励磁を断って
も、鉄心内の残留磁束によって吸引力が残り、復帰ばね
１４の力によっても、可動鉄心６が固定鉄心１２あるい
は脚部鉄心１６から釈放しない問題が発生する可能性が
ある。そこで従来は図１１および図１３のように可動鉄
心６の固定鉄心１２あるいは脚部鉄心１６と対向する側
の面６ａに、スンテレスなどの非磁性板をろう付けや抵
抗溶接などで接合し貼り付けることによりこの問題を解
決していた。Incidentally, in the electromagnet device having the structure shown in FIGS. 11 and 13, even if the excitation of the coil 11 is cut off, the attractive force remains due to the residual magnetic flux in the iron core, and the movable member is movable by the force of the return spring 14. There is a possibility that a problem that the core 6 is not released from the fixed core 12 or the leg core 16 may occur. Conventionally, as shown in FIGS. 11 and 13, a non-magnetic plate such as Sunteres is bonded to the surface 6a of the movable iron core 6 facing the fixed iron core 12 or the leg iron core 16 by brazing, resistance welding or the like. This has solved this problem.
【０００６】[0006]
【発明が解決しようとする課題】従来装置の１つである
図１１のものにおいては、電磁石の効率を考えた場合、
可動鉄心６の磁路断面積Ｓ1 と固定鉄心１２の磁路断面
積Ｓ2 およびＳ3 はすべて等しいことが必要である。こ
のため、Ｓ3 の断面積を十分にとり、かつ電磁接触器の
外径寸法Ｄをある大きさにキープしようとすると、コイ
ル１１の巻線の巻線寸法Ｃが十分にとれない場合があ
る。しかし、電磁石としてあるレベルの吸引力を出すた
めには、当然それ相応のアンペアターン（巻数Ｎ×励磁
電流Ｉ）が必要である。この場合、直流電圧を印加する
タイプのものでは、誘導リアクタンスが無視されるので
コイルの巻数Ｎを少なくしてコイルの抵抗を小さくする
と、コイルに多大な電流が流れ、コイルの焼損に波及す
る可能性があるため、一般には、巻数Ｎを多くしてコイ
ルの抵抗を大きくし、励磁電流Ｉを小さく抑えることに
よって必要アンペアターンを確保する方法がとられてい
る。以上のことから、図１１のような構造では、電磁接
触器の外形寸法Ｄを大きくしないと、十分性能を満足で
きない場合があるという問題があった。In the conventional apparatus shown in FIG. 11, which is one of the conventional apparatuses, considering the efficiency of the electromagnet,
The magnetic path cross-sectional areas S 1 of the movable core 6 and the magnetic path cross-sectional areas S 2 and S 3 of the fixed core 12 must all be equal. Therefore, sufficient to take the cross-sectional area of S 3, and when you try to keep the size is the outer diameter D of the electromagnetic contactor is sometimes winding dimension C of the winding coil 11 is not sufficiently taken. However, in order to generate a certain level of attractive force as an electromagnet, a corresponding ampere-turn (number of turns N × excitation current I) is necessary. In this case, if the DC voltage is applied, the induction reactance is ignored, so if the number of turns N of the coil is reduced and the resistance of the coil is reduced, a large amount of current flows through the coil, which may affect the burning of the coil. In general, a method of securing a necessary ampere-turn by increasing the number of turns N to increase the resistance of the coil and suppressing the exciting current I is adopted. From the above, the structure shown in FIG. 11 has a problem that the performance may not be sufficiently satisfied unless the outer dimension D of the electromagnetic contactor is increased.
【０００７】また、図１３のような電磁石装置をもつタ
イプの電磁接触器においては、図１１に示すタイプのも
のの課題を解決するために固定鉄心１２中の水平磁路を
底板１７に兼ねさせる構造にしているので、コイル１１
の巻線の巻幅Ｃも十分にとることができる。しかし、こ
の底板１７の磁路断面積Ｓ3 は図１４に示すｂ×ｔで決
まるわけであり、ｂ寸法が脚部鉄心１６の対向幅よりも
大きいことから必要な磁路断面積Ｓ3 を得ることが比較
的容易に可能になり、電磁接触器の外形寸法Ｄの小形化
に大いに貢献しているように見える課題がある。それ
は、磁路断面積Ｓ 3 を構成するｂ寸法は電磁接触器の外
形寸法で制約されているので寸法に制限があり、不足分
はｔ寸法を増すことにより補う必要がある点である。板
厚ｔは３．２ｍｍくらいを超えると、プレス機による打
抜き加工時に平板に巻戻し可能なロール材として供給で
きないので、人力による手差し供給になってしまい、量
産性を考えた場合欠点が残る。またｔが４〜５ｍｍくら
いを超えるとプレス機のトン数を増すか、あるいはプレ
ス機加工自体が不可能となってしまうので、ガス等によ
る切断加工などに頼らざる得ない。しかも、底板は、磁
路としての役割をしているだけでなく、構造物としての
役割を担っているので、図１４に示すような取付けねじ
１８用の孔１７ａを加工する場合においても、切断作業
とは別にバーリングタップ加工（バーリング：平板に下
孔をあけ、円錐形または円筒形ポンチで突き出してフラ
ンジを立てる成形加工）が必要となってくる（プレス加
工の場合は、プレス型内において同時にこの工程が可能
である）。従って板厚の厚い底板は量産には向かず、工
数がアップし、コストの高い電磁石装置になってしま
う。[0007] Further, a device having an electromagnet device as shown in FIG.
The type of electromagnetic contactor shown in FIG.
The horizontal magnetic path in the fixed iron core 12 is
Since the bottom plate 17 is also used, the coil 11
, The winding width C of the winding can be sufficiently obtained. But this
Path cross-sectional area S of bottom plate 17ThreeIs determined by b × t shown in FIG.
That is, the dimension b is larger than the facing width of the leg core 16.
Required magnetic path cross-sectional area SThreeCan be compared
It becomes possible easily, and the external dimension D of the electromagnetic contactor is reduced.
There are issues that appear to be contributing significantly to It
Is the magnetic path cross section S ThreeIs outside the electromagnetic contactor
Due to restrictions on shape dimensions, dimensions are limited and shortage
Is the point that needs to be compensated for by increasing the t dimension. Board
When the thickness t exceeds about 3.2 mm, the
Supplied as a roll material that can be rewound to a flat plate during punching
Can not be supplied, so it will be supplied manually by hand.
The disadvantage remains when considering productivity. Also, t is 4-5mm
Exceeding the tonnage of the press, or
Gas machine processing itself becomes impossible.
I have to rely on cutting work. Moreover, the bottom plate is magnetic
Not only as a road, but also as a structure
Since it has a role, a mounting screw as shown in FIG.
When the hole 17a for 18 is machined,
Separately from the burring tapping process (burring: flat to bottom
Drill holes and project with a conical or cylindrical punch to
Press forming)
This process can be performed simultaneously in the press mold
Is). Therefore, a thick bottom plate is not suitable for mass production.
The number has increased and the cost has increased.
U.
【０００８】次に非磁性板のろう付けであるが、これも
ろう材を構成する銀の単価が非常に高いことや、接合す
る際の炉が必要であったりしてろう付けに時間が長くか
かることから、コストアップの原因となるという問題が
あった。この発明の目的は、コイル巻線の巻幅縮小をも
たらすことなく固定鉄心側の磁路断面積をその磁路全長
にわたり必要断面積にかつ安価に均一化するとともに、
コイル電流遮断後に電磁石装置の可動鉄心，固定鉄心を
含む閉磁路中に残る残留磁束を低減するための非磁性板
を閉磁路中に安価に介装することができる電磁石装置の
構成を提供することである。Next, brazing of a non-magnetic plate is also time-consuming because the unit price of silver constituting the brazing material is very high and a furnace is required for joining. For this reason, there is a problem that the cost is increased. An object of the present invention is to make the cross-sectional area of the magnetic path on the fixed iron core uniform to the required cross-sectional area over the entire length of the magnetic path at a low cost without reducing the winding width of the coil winding,
Provided is a configuration of an electromagnet device in which a non-magnetic plate for reducing residual magnetic flux remaining in a closed magnetic circuit including a movable core and a fixed iron core of the electromagnet device after interruption of a coil current can be inexpensively inserted in the closed magnetic circuit. It is.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
に、本発明においては、冒頭記載の構成による電磁石装
置、すなわち、可動接触子を保持する可動接触子支えに
連結された可動鉄心を吸引する固定鉄心が、これらの鉄
心を収容する電磁接触器固定フレームの下端面を閉鎖す
る底板に複数の柱状脚部鉄心を立設，固定してなる電磁
接触器の電磁石装置において、請求項１に記載のごと
く、柱状脚部鉄心の底板側の端部相互間を強磁性板によ
り連結する。In order to solve the above-mentioned problems, in the present invention, an electromagnet device having the structure described at the beginning, that is, a movable iron core connected to a movable contact support for holding a movable contact is sucked. An electromagnetic device for an electromagnetic contactor, wherein the fixed iron core is provided with a plurality of pillar-shaped leg cores erected and fixed on a bottom plate closing a lower end surface of an electromagnetic contactor fixing frame accommodating the cores. As described above, the ends of the columnar leg cores on the bottom plate side are connected to each other by the ferromagnetic plate.
【００１０】この場合、請求項２に記載のごとく、柱状
脚部鉄心の底板側端部相互間の強磁性板による連結は、
強磁性板を底板の上面に重ねて行うのがよい。あるい
は、強磁性板による連結を、請求項３に記載のごとく、
強磁性板を底板の裏面に重ねて行うようにしてもよい。
なお、柱状脚部鉄心を立設，固定する底板は、請求項４
に記載のごとく、これを非磁性板とするのもよい。In this case, the connection between the bottom plate-side ends of the columnar leg cores by the ferromagnetic plate is as described in claim 2.
The ferromagnetic plate is preferably stacked on the upper surface of the bottom plate. Alternatively, the connection by the ferromagnetic plate is performed as described in claim 3,
The ferromagnetic plate may be stacked on the back surface of the bottom plate.
The bottom plate on which the columnar leg core is erected and fixed is defined in claim 4
As described above, this may be a non-magnetic plate.
【００１１】上記強磁性板は、請求項５に記載のごと
く、複数の柱状の脚部鉄心の各底板側端面すべてにかつ
各端面の全面積に同時に接触可能な平面形状のものとし
てもよく、また請求項６に記載のごとく、複数の柱状脚
部鉄心の各底面側端面すべてを底板の上面に接触させる
とともにみずからは厚みの面が複数の柱状脚部鉄心の各
底板側周面の一部または全部に同時に接触状態に近接す
るように切り込みまたは孔が形成されたものとしてもよ
い。The ferromagnetic plate may have a planar shape capable of simultaneously contacting all of the bottom plate-side end surfaces of the plurality of columnar leg cores and the entire area of each of the end surfaces, Further, as in claim 6, all of the bottom-side end faces of the plurality of columnar leg cores are brought into contact with the upper surface of the bottom plate and a part of the thickness of the plurality of columnar leg cores is part of the peripheral surface of each bottom plate side of the plurality of columnar leg cores. Alternatively, notches or holes may be formed so as to be close to the contact state at the same time.
【００１２】また、上記強磁性板に、請求項７に記載の
ごとく、ロール材として巻取りおよび平板に巻戻し可能
な厚さの板を用いるようにすれば極めて好適である。ま
た、冒頭記載の構成による電磁石装置、すなわち、可動
接触子を保持する可動接触子支えに連結された可動鉄心
を吸引する固定鉄心が、これらの鉄心を収容する電磁接
触器固定フレームの下端面を閉鎖する底板に複数の柱状
脚部鉄心を立設，固定してなる電磁接触器の電磁石装置
を、請求項８に記載の発明のごとく、複数の柱状脚部鉄
心の各底板側端面と底板との間に非磁性板が脚部鉄心各
底板側端面に密着させて介装されるものとすれば極めて
好適である。It is extremely preferable to use, as the roll material, a plate having a thickness capable of being wound up and unwound into a flat plate as the roll material for the ferromagnetic plate. In addition, the electromagnet device according to the configuration described at the beginning, that is, the fixed core that sucks the movable core connected to the movable contact support that holds the movable contact, lowers the lower end surface of the electromagnetic contactor fixed frame that houses these iron cores. An electromagnet device of an electromagnetic contactor comprising a plurality of pillar-shaped leg cores erected and fixed on a bottom plate to be closed, wherein each of the bottom plate-side end faces of the plurality of pillar-shaped leg cores, the bottom plate and the bottom plate are provided. It is extremely preferable that a non-magnetic plate is interposed between the leg cores and the bottom plate side end face.
【００１３】この場合には、非磁性板の周縁形状は、請
求項９に記載のごとく、複数の柱状脚部鉄心の各底板側
端面すべてを同時に内包可能な形状のものとしてもよ
く、あるいは、請求項１０に記載のごとく、複数の柱状
脚部鉄心の各底板側端面と同形等大の、あるいは各底板
側端面の周縁形状にそれぞれ内包される形状としたもの
でもよい。[0013] In this case, the peripheral shape of the non-magnetic plate may be such that all the bottom plate side end faces of the plurality of columnar leg cores can be included at the same time. As described in the tenth aspect, the plurality of columnar leg cores may have the same shape and the same size as the respective end faces of the bottom plates, or may be included in the peripheral shape of the respective end faces of the bottom plates.
【００１４】[0014]
【作用】電磁石装置を請求項１記載のように構成すれ
ば、複数の柱状脚部鉄心の底板側端部相互間を連結する
強磁性板の幅を、電磁接触器固定フレームの周壁内面い
っぱいの幅とすることができるので、必要な磁路断面積
を板厚の薄い強磁性板で得ることができる。また、必要
な板厚を、さらに薄い板厚の板を重ねて得ることができ
るので、強磁性板を常に量産に適したプレス打抜き可能
な厚さのもので構成することができ、かつこれにより、
磁路断面積が磁路全長にわたり均一でかつ材料の利用効
率のよい電磁石装置を、電磁接触器を大形化することな
く得ることができる。When the electromagnet device is constructed as described in claim 1, the width of the ferromagnetic plate connecting the bottom plate-side ends of the plurality of columnar leg cores to the entire inner surface of the peripheral wall of the electromagnetic contactor fixing frame. Since the width can be set to a width, a required magnetic path cross-sectional area can be obtained with a thin ferromagnetic plate. In addition, since the required thickness can be obtained by stacking thinner plates, the ferromagnetic plate can always be formed with a thickness suitable for mass production and capable of being stamped with a press. ,
An electromagnet device having a uniform magnetic path cross-sectional area over the entire length of the magnetic path and high material utilization efficiency can be obtained without increasing the size of the electromagnetic contactor.
【００１５】このように、複数の柱状脚部鉄心の底板側
端部相互間を連結する強磁性板は板厚を薄くすることが
できるので、請求項２記載のように、これを底板の上面
に重ね、これにより電磁コイル巻線の巻幅が低減して
も、すでに存在しているコイル巻枠の巻線用スペースの
径方向余裕分を利用してコイルの巻数を確保することが
でき、電磁接触器の大形化を避けることができる。As described above, the ferromagnetic plate connecting the bottom plate side ends of the plurality of columnar leg cores can have a reduced thickness, and the ferromagnetic plate is connected to the upper surface of the bottom plate. In this way, even if the winding width of the electromagnetic coil winding is reduced, the number of turns of the coil can be secured by utilizing the radial margin of the existing coil winding space, The size of the electromagnetic contactor can be avoided.
【００１６】また、強磁性板を、請求項３に記載のよう
に、底板の裏面に重ねても、電磁接触器の大形化を実質
的に避けることができる。なお、上記請求項２および３
を併用し、強磁性板を底板の上面と裏面とに分けて重ね
て電磁接触器の大形化を避けることもできる。また、請
求項４記載のように、底板を非磁性板とし、これを例え
ば絶縁板とすれば、電磁接触器の固定フレームは通常注
型樹脂成形品とすることから充電部となる電磁石が絶縁
物で囲まれることになり、安全性の高い電磁接触器とす
ることができる。また、底板を例えばステンレス等の非
磁性金属板とすれば、請求項３記載のように強磁性板を
底板の裏面に重ねる場合にこれを鉄心中の残留磁束低減
用ライナとすることができ、従来の非磁性板が必要なく
なるため、従来の非磁性板の厚み分底板を固定フレーム
の内方へ寄せることにより、底板を強磁性板とする場合
と同じ大きさの電磁接触器とすることができて残留磁束
低減に必要なコストを下げることができる。Further, even if the ferromagnetic plate is overlaid on the back surface of the bottom plate, it is possible to substantially avoid the size of the electromagnetic contactor. The above claims 2 and 3
In addition, the ferromagnetic plate can be divided into an upper surface and a lower surface of the bottom plate and overlapped to avoid an increase in the size of the electromagnetic contactor. Further, if the bottom plate is a non-magnetic plate and this is, for example, an insulating plate, the fixed frame of the electromagnetic contactor is usually a cast resin molded product, so that the electromagnet serving as the charging unit is insulated. Since it is surrounded by objects, a highly safe electromagnetic contactor can be obtained. Further, if the bottom plate is made of a non-magnetic metal plate such as stainless steel, for example, when a ferromagnetic plate is stacked on the back surface of the bottom plate as described in claim 3, this can be used as a liner for reducing residual magnetic flux in the iron core, Since the conventional non-magnetic plate is no longer needed, the bottom plate is moved toward the inside of the fixed frame by the thickness of the conventional non-magnetic plate, so that an electromagnetic contactor of the same size as when the bottom plate is made of a ferromagnetic plate can be obtained. As a result, the cost required for reducing the residual magnetic flux can be reduced.
【００１７】また、強磁性板を底板の上面に重ねる場
合、請求項５記載のように、強磁性板を、複数の柱状の
脚部鉄心の各底板側端面すべてにかつ各端面の全面積に
同時に接触可能な平面形状に形成するようにすれば、形
状の制約が少ないので、強磁性板を安価に得ることがで
き、電磁接触器のコストを低く抑えることができる。ま
た、強磁性板を底板の上面に重ねる場合、請求項６記載
のように、複数の柱状脚部鉄心の各底面側端面すべてを
底板の上面に接触させるとともにみずからは厚みの面が
複数の柱状脚部鉄心の各底板側周面の一部または全部に
同時に接触状態に近接するように切り込みまたは孔が形
成されているものとすれば、強磁性板を脚部鉄心に嵌め
込むだけで位置ずれが防止され、脚部鉄心の底板側端部
間の磁路をより少ない組立て時間で得ることができる。In the case where the ferromagnetic plate is overlaid on the upper surface of the bottom plate, the ferromagnetic plate may be provided on all the bottom plate side end surfaces of the plurality of columnar leg cores and on the entire area of each end surface. If they are formed in a planar shape that can be contacted at the same time, since there are few restrictions on the shape, a ferromagnetic plate can be obtained at low cost, and the cost of the electromagnetic contactor can be kept low. In the case where the ferromagnetic plate is overlaid on the upper surface of the bottom plate, all the bottom end faces of the plurality of columnar leg cores are brought into contact with the upper surface of the bottom plate, and the thickness of the ferromagnetic plate is more than one column. If notches or holes are formed so that a part or all of the peripheral surface of each bottom plate side of the leg core is close to the contact state at the same time, the ferromagnetic plate can be misaligned simply by fitting it into the leg core. Thus, a magnetic path between the bottom plate-side ends of the leg cores can be obtained with less assembly time.
【００１８】そして、請求項７記載のように、強磁性板
にロール材として巻取りおよび平板に巻戻し可能な厚さ
の板を用いることにより、プレス機による打抜きが可能
になり、強磁性板も量産が効率よく行われ、強磁性板を
安価に得ることができる。また、冒頭記載の構成による
電磁接触器、すなわち、可動接触子を保持する可動接触
子支えに連結された可動鉄心を吸引する固定鉄心が、こ
れらの鉄心を収容する電磁接触器固定フレームの下端面
を閉鎖する底板に複数の柱状脚部鉄心を立設，固定して
なる電磁接触器の電磁石装置を、請求項８記載のよう
に、複数の柱状脚部鉄心の各底板側端面と底板との間に
非磁性板が脚部鉄心各底板側端面に密着させて介装され
たものとすれば、非磁性板にねじ挿通用孔をあけるのみ
で介装可能となるので、可動鉄心，固定鉄心を含む閉磁
路中への固定に、固定位置を可動，固定両鉄心の対向面
としたために必要とした従来のろう付けや抵抗溶接の場
合のように長時間を必要とせず、電磁接触器のコストを
低減させることができる。According to a seventh aspect of the present invention, by using a plate having a thickness capable of being wound up and unwound into a flat plate as a roll material on a ferromagnetic plate, punching by a press machine becomes possible. Also, mass production can be performed efficiently, and a ferromagnetic plate can be obtained at low cost. In addition, the electromagnetic contactor according to the configuration described at the beginning, that is, the fixed core that sucks the movable core connected to the movable contact support that holds the movable contact is a lower end surface of the electromagnetic contactor fixed frame that houses these iron cores. An electromagnet device of an electromagnetic contactor comprising a plurality of pillar-shaped leg cores erected and fixed on a bottom plate for closing the bottom plate, wherein each of the bottom plate-side end faces of the plurality of pillar-shaped leg cores is connected to the bottom plate. If a non-magnetic plate is interposed between the leg core and the bottom plate side end surface in close contact, the non-magnetic plate can be interposed only by drilling a screw insertion hole. It does not require a long time for fixing in a closed magnetic circuit including the conventional brazing or resistance welding, which was necessary to set the fixed position to the movable and fixed surfaces opposite to each other. Cost can be reduced.
【００１９】そして、この非磁性板を請求項９記載のよ
うに形成すれば、形状の制約が少ないので、非磁性板を
安価に得ることができ、また請求項１０記載のように形
成すれば、脚部鉄心自体の高さをそのままとして脚部鉄
心上面と可動鉄心下面との間に必要な空隙が得られ、か
つ非磁性板の下面から脚部鉄心上面までの高さが非磁性
板の厚み分高くなるので、コイルの高さすなわちコイル
巻線の巻幅に余裕が生じ、巻線の巻数を増して小さい励
磁電流で駆動可能な電磁石装置とすることができる。ま
た、非磁性板の厚み分脚部鉄心の高さを低くすれば、そ
の分電磁接触器を小形化することができる。If this non-magnetic plate is formed as described in claim 9, since the shape is less restricted, the non-magnetic plate can be obtained at low cost. The required gap is obtained between the upper surface of the leg core and the lower surface of the movable core while maintaining the height of the leg core itself, and the height from the lower surface of the non-magnetic plate to the upper surface of the leg core is Since the height is increased by the thickness, there is a margin in the height of the coil, that is, the winding width of the coil winding, and the number of windings can be increased to provide an electromagnet device that can be driven with a small exciting current. Also, if the height of the leg core is reduced by the thickness of the nonmagnetic plate, the electromagnetic contactor can be downsized accordingly.
【００２０】[0020]
【実施例】図１および図２に請求項１発明の第１の実施
例を示す。図１は、電磁石装置における固定鉄心側の構
成を、電磁接触器の組立て状態で示すものであり、図２
は電磁石装置の固定鉄心側のみの構成を示す。図１に示
した電磁接触器の断面中、固定鉄心部以外の各部には、
図１１および図１３と同一符号を付してあり、これら各
部についてはすでに説明したので、ここでは説明を省略
する。本実施例では、固定鉄心側の磁路は２個の脚部鉄
心１６と、２枚の強磁性板２１，固定フレーム下端面を
閉鎖する目的を兼ねた底板１７とを用いて構成されてい
る。強磁性体２１には、この実施例では、汎用性の高い
ＪＩＳ規格のもの〔Ｇ３１０１（一般構造用圧延鋼板）
ＳＳ４００〕を用いている。固定鉄心側の磁路を図１の
ように電磁接触器固定フレーム内に構成するには、ま
ず、図２のように、底板１７の上面に強磁性板２１を重
ねた後脚部鉄心１６を立て、底板１７の下面側からねじ
１９をねじ込んで３者一体に共締めする。しかる後、コ
イル１１を各脚部鉄心１６に嵌め、固定フレームの下端
面側から固定フレーム内へ挿入し、ねじ１８で底板１７
を固定フレームに固定する。1 and 2 show a first embodiment of the present invention. FIG. 1 shows the structure of the fixed core side of the electromagnet apparatus in an assembled state of an electromagnetic contactor.
Shows the configuration of the electromagnet device only on the fixed iron core side. In the cross section of the electromagnetic contactor shown in FIG. 1, each part other than the fixed core part includes:
The same reference numerals as those in FIGS. 11 and 13 denote the same parts, and a description thereof will be omitted here because they have already been described. In this embodiment, the magnetic path on the fixed core side is constituted by two leg iron cores 16, two ferromagnetic plates 21, and a bottom plate 17 which also serves to close the lower end surface of the fixed frame. . In this embodiment, the ferromagnetic material 21 has a versatile JIS standard [G3101 (rolled steel sheet for general structure)].
SS400]. In order to configure the magnetic path on the fixed core side in the electromagnetic contactor fixed frame as shown in FIG. 1, first, as shown in FIG. Then, screws 19 are screwed in from the lower surface of the bottom plate 17 to fasten them together. Thereafter, the coil 11 is fitted into each leg core 16, inserted into the fixed frame from the lower end face side of the fixed frame, and
To the fixed frame.
【００２１】強磁性板２１は固定フレーム周壁の内面い
っぱいに面積をとることができるので、脚部鉄心１６の
各底板側端部相互間磁路の必要断面積を薄い板厚で得る
ことができ、コイル１１上面の高さを高くすることな
く、コイル巻枠の巻線用スペースの従来の径方向余裕分
を利用して必要な巻数のコイルを得ることができる。し
たがって、強磁性板２１には、板厚が３．２ｍｍ以下
の，ロール材として巻取り可能な板厚のも、例えばＪＩ
Ｓ：Ｇ３１４１（冷間圧延鋼板及び鋼帯）ＳＰＣＣを用
い、これをプレス機で打ち抜いたものを用いることがで
きる。なお、脚部鉄心１６には厚板鋼板から切り出して
必要寸法に切削加工したものを用いている。Since the ferromagnetic plate 21 can cover the entire inner surface of the fixed frame peripheral wall, the required cross-sectional area of the magnetic path between the bottom plate side ends of the leg iron core 16 can be obtained with a small plate thickness. The coil having the required number of turns can be obtained by using the conventional radial allowance of the winding space of the coil winding frame without increasing the height of the upper surface of the coil 11. Therefore, the ferromagnetic plate 21 has a plate thickness of 3.2 mm or less that can be wound as a roll material, for example, JI.
S: G3141 (cold-rolled steel plate and steel strip) SPCC can be used, and the one obtained by punching this with a press can be used. The leg core 16 is made of a thick steel plate and cut to a required size.
【００２２】図３および図６に請求項１発明の第２の実
施例による固定鉄心側の磁路構成を示す。底板２１の上
面に重ねる強磁性板２２は、方形の板を両側から切り込
んで形成されるＨ字状にロール材をプレス機で打ち抜い
て形成される。固定鉄心側の磁路形成は、まず、底板１
７の上面に脚部鉄心１６を立て、底板１７の下面側から
図示されないねじで脚部鉄心１６を底板１７の上面に固
定し、しかる後、Ｈ字状強磁性板を脚部鉄心１６の間に
嵌め込んで行う。この構成では、強磁性板を脚部鉄心１
６とともに共締めする必要がないので、ねじ締め作業が
容易になり、また、Ｈ字の高さを電磁接触機固定フレー
ムの周壁内面いっぱいにとることができるので、第１の
実施例と同様に強磁性板の積み重ね高さを低くして脚部
鉄心１６の底板側端部相互間磁路の磁気抵抗を小さくす
ることができる。また図４，図５は図３の強磁性板の変
形例で、このような形としてもほぼ同等の性能を得るこ
とが可能である。FIGS. 3 and 6 show a magnetic path configuration on the fixed iron core side according to a second embodiment of the present invention. The ferromagnetic plate 22 to be superimposed on the upper surface of the bottom plate 21 is formed by punching a roll material into a H shape formed by cutting a rectangular plate from both sides with a press. First, the bottom plate 1
7, the leg core 16 is fixed to the upper surface of the bottom plate 17 with screws (not shown) from the lower surface side of the bottom plate 17, and then the H-shaped ferromagnetic plate is placed between the leg cores 16. It is performed by fitting into In this configuration, the ferromagnetic plate is connected to the leg core 1
6, it is not necessary to tighten together, so that the screw tightening work becomes easy, and the height of the H-shape can be made to fill the inner surface of the peripheral wall of the fixed frame of the electromagnetic contactor, so that the same as in the first embodiment. By reducing the stacking height of the ferromagnetic plates, the magnetic resistance of the magnetic path between the end portions of the leg iron cores 16 on the bottom plate side can be reduced. FIGS. 4 and 5 show modifications of the ferromagnetic plate shown in FIG. 3, and even with such a shape, it is possible to obtain substantially the same performance.
【００２３】図７，図８に請求項１発明の第３の実施例
を示す。この実施例は強磁性板２１を底板１７の裏面に
配置したもので、電磁接触器の高さを第１の実施例と等
しくして第１の実施例と同等の磁路断面積が得られると
ともに、より空間スペースに余裕のある底板裏面を使用
することで、強磁性板２１の面積を広くでき、電磁接触
器の設置間隔を広くできる場合等、場合によって２枚必
要なものが１枚にできる。また、底板１７を薄くするこ
とができる。FIGS. 7 and 8 show a third embodiment of the present invention. In this embodiment, the ferromagnetic plate 21 is arranged on the back surface of the bottom plate 17, and the height of the electromagnetic contactor is made equal to that of the first embodiment to obtain the same magnetic path cross-sectional area as that of the first embodiment. At the same time, by using the bottom plate back surface with more room for space, the area of the ferromagnetic plate 21 can be increased and the installation interval of the electromagnetic contactor can be widened. it can. Further, the bottom plate 17 can be made thin.
【００２４】なお、上記第１ないし第３の実施例では、
底板１７の材質を強磁性体としているが、必ずしも強磁
性体である必要はない。なぜならば、強磁性体２１によ
って磁路が形成されるからであり、もしも電磁接触器の
高さを高くすることなく必要な磁路断面積が強磁性板２
１によって確保されるならば底板１７を強磁性体にする
必要は全くない。このような場合には、底板１７を絶縁
板として、充電部となる電磁石を絶縁することができ、
安全性の高い電磁接触器とすることができる。この場合
の絶縁板には、絶縁板の基材となる紙や布に含浸させる
樹脂として、プラスチックのうち、付加縮合系のものに
属して熱硬化性を示すフェノール樹脂を用いたフェノー
ル板や、製造されているプラスチックの約８０％の量を
占める熱可塑性のものの成形による、いわゆるプラスチ
ック板など、機械的衝撃に強い有機質の絶縁板とするの
がよい。また、第３の実施例では、底板１７をステンレ
ス等の非磁性金属板とすることにより、従来の残留磁束
低減用非磁性板２０（図１３）を省略することができ
る。In the first to third embodiments,
Although the bottom plate 17 is made of a ferromagnetic material, the material need not always be a ferromagnetic material. This is because a magnetic path is formed by the ferromagnetic material 21, and the necessary magnetic path cross-sectional area can be increased without increasing the height of the electromagnetic contactor.
There is no need for the bottom plate 17 to be ferromagnetic at all if secured by 1. In such a case, the bottom plate 17 can be used as an insulating plate to insulate the electromagnet serving as a charging unit.
A highly safe electromagnetic contactor can be provided. In the insulating plate in this case, as a resin to be impregnated into paper or cloth serving as a base material of the insulating plate, among plastics, a phenol plate using a phenol resin that belongs to an addition condensation type and exhibits thermosetting properties, It is preferable to use an organic insulating plate that is resistant to mechanical impact, such as a so-called plastic plate formed by molding a thermoplastic material that accounts for about 80% of the plastic being manufactured. In the third embodiment, the bottom plate 17 is a non-magnetic metal plate such as stainless steel, so that the conventional non-magnetic plate 20 for reducing residual magnetic flux (FIG. 13) can be omitted.
【００２５】図９および図１０に請求項８発明の一実施
例を示す。この実施例は、コイルの励磁電流遮断後に電
磁石装置の閉磁路中に残る残留磁束を低減させるための
非磁性板を脚部鉄心の底板側端面に密着させて閉磁路中
に介装する際の介装の仕方の一例を示すものである。図
９に示した電磁接触器の断面中、固定鉄心部以外の各部
には図１１と同一符号を付してあり、これら各部につい
てはすでに説明したので、ここでは説明を省略する。こ
の実施例では、非磁性板２３は、ステンレス鋼板を脚部
鉄心１６の底板側端面形状と合同な形状にプレス機で打
ち抜いて形成したものを用いている。固定鉄心を図９の
状態に電磁接触器の固定フレーム内に組み込む際には、
図１０のように、底板１７の上面に非磁性板２３を重ね
た後、さらにこの非磁性板２３の上面に脚部鉄心１６を
立て、底板１７の下面側からねじ１９をねじ込んで３者
一体に共締めする。以後の固定フレーム内への組み込み
作業は第１の実施例の場合と同様に行われる。このよう
に非磁性板２３を、脚部鉄心１６の底板側端面と合同な
形状、あるいは底板側端面形状内に内包される形状とす
ることにより、脚部鉄心自体の高さを変えることなく可
動鉄心と固定鉄心との間に所要空隙長を得ることがで
き、また、非磁性板２３の厚み分コイルの高さに余裕が
生じるので、その分コイル高さを高くして巻線の巻数を
増し、励磁電流を小さくすることも可能になる。また、
非磁性板２３の厚み分脚部鉄心の高さを低くすれば、そ
の分電磁接触器の高さを低くすることができる。また、
非磁性板２３の固定に従来のようにろう付けや抵抗溶接
等の作業を必要としないので、電磁石装置の製作工数が
低減し、電磁接触器を安価に製作することができる。な
お、本実施例による非磁性板介装方法では、脚部鉄心自
体の高さを変えることなく非磁性板の厚み分コイルの高
さに余裕が生じるので、この介装方法を請求項１記載の
電磁石装置に適用することにより、底板の上面に重ねる
強磁性板厚みのコイル高さへの影響分を相殺することが
でき、請求項１記載の電磁石装置をより容易に実現する
ことができる。FIGS. 9 and 10 show an embodiment of the present invention. In this embodiment, a non-magnetic plate for reducing the residual magnetic flux remaining in the closed magnetic circuit of the electromagnet device after the excitation current of the coil is cut off is closely attached to the bottom plate side end surface of the leg iron core and is interposed in the closed magnetic circuit. It shows an example of how to interpose. In the cross section of the electromagnetic contactor shown in FIG. 9, each part other than the fixed iron core is denoted by the same reference numeral as in FIG. 11, and since these parts have already been described, description thereof will be omitted here. In this embodiment, the non-magnetic plate 23 is formed by stamping a stainless steel plate with a press into a shape similar to the shape of the bottom plate side end surface of the leg core 16. When assembling the fixed core into the fixed frame of the electromagnetic contactor in the state of FIG. 9,
As shown in FIG. 10, after the non-magnetic plate 23 is overlaid on the upper surface of the bottom plate 17, the leg core 16 is further erected on the upper surface of the non-magnetic plate 23, and the screw 19 is screwed from the lower surface side of the bottom plate 17 to integrate the three members. Together. Subsequent assembly work into the fixed frame is performed in the same manner as in the first embodiment. By forming the non-magnetic plate 23 into a shape congruent with the bottom plate-side end surface of the leg core 16 or included in the bottom plate-side end surface shape, the non-magnetic plate 23 can be moved without changing the height of the leg core itself. The required air gap length can be obtained between the iron core and the fixed iron core, and since there is a margin in the height of the coil corresponding to the thickness of the non-magnetic plate 23, the coil height is increased accordingly and the number of turns of the winding is increased. It is also possible to reduce the exciting current. Also,
If the height of the leg core is reduced by the thickness of the nonmagnetic plate 23, the height of the electromagnetic contactor can be reduced accordingly. Also,
Since the fixing of the non-magnetic plate 23 does not require operations such as brazing and resistance welding as in the related art, the man-hour for manufacturing the electromagnet device is reduced, and the electromagnetic contactor can be manufactured at low cost. In the non-magnetic plate interposing method according to the present embodiment, there is a margin in the height of the coil corresponding to the thickness of the non-magnetic plate without changing the height of the leg core itself. By applying the present invention to the electromagnet device described above, the influence of the thickness of the ferromagnetic plate superimposed on the upper surface of the bottom plate on the coil height can be offset, and the electromagnet device according to claim 1 can be realized more easily.
【００２６】[0026]
【発明の効果】本発明においては、電磁接触器の電磁石
装置を以上の構成とすることとしたので、以下に記載す
る効果が得られる。請求項１記載の発明による構成で
は、固定鉄心を構成する複数の脚部鉄心の各底板側端部
相互間の磁路を、底板側端部相互間を強磁性板により連
結して構成することしたので、電磁石装置の磁路断面を
簡易に均一化することができ、また、強磁性板の幅を、
電磁接触器の固定フレーム周壁内面いっぱいにとること
ができるので、強磁性板の厚みを小さくすることがで
き、コイルの上面位置を抑えて所要巻数のコイルを得る
ことができるため、電磁接触器を大形化することのな
い、かつ磁路部材の使用効率のよい電磁石装置とするこ
とができる。According to the present invention, since the electromagnet device of the electromagnetic contactor is configured as described above, the following effects can be obtained. In the configuration according to the first aspect of the present invention, the magnetic path between the bottom plate-side ends of the plurality of leg cores constituting the fixed iron core is formed by connecting the bottom plate-side ends with a ferromagnetic plate. As a result, the cross section of the magnetic path of the electromagnet device can be easily made uniform, and the width of the ferromagnetic plate can be reduced.
Since the electromagnetic contactor can take up the entire inner surface of the fixed frame peripheral wall, the thickness of the ferromagnetic plate can be reduced, and the coil with the required number of turns can be obtained by suppressing the upper surface position of the coil. An electromagnet device that does not increase in size and has high use efficiency of the magnetic path member can be provided.
【００２７】また、固定鉄心を構成する複数の脚部鉄心
の各底板側端部相互間の磁路を強磁性板を用いて形成す
るようにしたので、プレス機で容易に打ち抜き可能な薄
い板材を必要枚数重ねて磁路を形成することができ、電
磁石装置の量産を効率よく行うことができる。請求項２
および３記載の電磁石装置では、強磁性板を底板に重ね
て脚部鉄心の底板側端部相互間を連結するので、電磁接
触器の大形化を避けることができる。Further, since the magnetic path between the bottom plate side ends of the plurality of leg cores constituting the fixed iron core is formed by using a ferromagnetic plate, a thin plate material which can be easily punched by a press machine. Can be formed in a required number of times to form a magnetic path, and mass production of the electromagnet device can be performed efficiently. Claim 2
In the electromagnet device described in (3) and (3), since the ferromagnetic plate is overlapped on the bottom plate and the bottom plate side ends of the leg cores are connected to each other, it is possible to avoid an increase in the size of the electromagnetic contactor.
【００２８】さらに、請求項３記載の電磁石装置では、
空間スペースに余裕のある底板の裏面に強磁性板に重ね
るので、強磁性板の面積を広げることができ、底板上面
に重ねる場合２枚必要となった強磁性板を１枚とするこ
とができたり、底板を薄くすることができたりするの
で、電磁接触器の低コスト化が可能になる。請求項４記
載の電磁石装置では、底板を非磁性板とする際にこれを
絶縁板とすることにより安全性の高い電磁接触器とする
ことができ、また、請求項３記載の電磁装置では非磁性
金属板とすることにより、従来の残留磁束低減用非磁性
板を省略できて電磁接触器のコストを低減することがで
きる。Further, in the electromagnet device according to the third aspect,
Since the ferromagnetic plate is superimposed on the back surface of the bottom plate with sufficient space, the area of the ferromagnetic plate can be increased. In addition, since the bottom plate can be made thinner, the cost of the electromagnetic contactor can be reduced. In the electromagnet device according to the fourth aspect, when the bottom plate is made of a non-magnetic plate, it can be a highly safe electromagnetic contactor by using this as an insulating plate. By using a magnetic metal plate, the conventional non-magnetic plate for reducing residual magnetic flux can be omitted, and the cost of the electromagnetic contactor can be reduced.
【００２９】請求項５記載の電磁石装置では、強磁性板
を、複数の柱状の脚部鉄心の各底板側端面すべてにかつ
各端面の全面積に同時に接触可能な平面形状をもつもの
とするので、縦，横の寸法など平面形状の制約が少な
く、強磁性板を安価に得ることができ、電磁接触器のコ
ストを低く抑えることができる。請求項６記載の電磁接
触器では、強磁性板を、複数の柱状脚部鉄心の各底面側
端面すべてを底板の上面に接触させるとともにみずから
は厚みの面が複数の柱状脚部鉄心の各底板側周面の一部
または全部に同時に接触状態に近接するように切り込み
または孔が形成されたものとするので、強磁性板の組込
みが容易となり、組立て時間が短くなるため、請求項５
記載の強磁性板と比べて平面形状が複雑となった分のコ
スト上昇を相殺して電磁接触器のコスト上昇を抑えるこ
とができる。In the electromagnet apparatus according to the fifth aspect, the ferromagnetic plate has a planar shape capable of simultaneously contacting all the end faces on the bottom plate side of the plurality of columnar leg cores and the entire area of each end face. There are few restrictions on the planar shape such as the vertical and horizontal dimensions, the ferromagnetic plate can be obtained at low cost, and the cost of the electromagnetic contactor can be kept low. In the electromagnetic contactor according to the sixth aspect, the ferromagnetic plate may be configured such that all of the bottom end surfaces of the plurality of columnar leg cores are in contact with the upper surface of the bottom plate, and the bottom plate of the plurality of columnar leg cores has its own thickness. A cut or a hole is formed in a part or all of the side peripheral surface so as to be close to the contact state at the same time, so that the ferromagnetic plate can be easily assembled and the assembling time is shortened.
The cost increase of the electromagnetic contactor can be suppressed by offsetting the increase in cost due to the complicated planar shape as compared with the described ferromagnetic plate.
【００３０】請求項７記載の電磁石装置では、強磁性板
にロール材として巻取りおよび平板に巻戻し可能な厚さ
の板を用いるので、プレス機を使用して強磁性板の量産
が効率よく行われ、電磁接触器のコストを低く抑えるこ
とができる。請求項８記載の電磁石装置では、非磁性板
の周縁形状を、複数の柱状脚部鉄心の各底板側端面すべ
てを同時に内包可能な形状とするので、縦，横の寸法な
ど形状の制約が少なく、非磁性板を安価に得ることがで
きる。In the electromagnet apparatus according to the present invention, since a ferromagnetic plate is used as a roll material and has a thickness capable of being wound and unwound into a flat plate, mass production of the ferromagnetic plate can be efficiently performed using a press machine. In this case, the cost of the electromagnetic contactor can be kept low. In the electromagnet device according to the eighth aspect, since the peripheral shape of the non-magnetic plate is a shape capable of simultaneously including all the bottom plate side end faces of the plurality of columnar leg cores, there are few restrictions on the shape such as vertical and horizontal dimensions. And a non-magnetic plate can be obtained at low cost.
【００３１】請求項１０記載の電磁石装置では、非磁性
板の周縁形状を複数の柱状脚部鉄心の各底板側端面と同
形等大の、あるいは各底板側端面の周縁形状にそれぞれ
内包される形状とするので、脚部鉄心自体の高さをその
ままとして脚部鉄心上面と可動鉄心下面との間に必要な
空隙が得られ、かつ非磁性板の下面から脚部鉄心上面ま
での高さが非磁性板の厚み分高くなるので、コイルの高
さすなわちコイル巻線の巻幅に余裕が生じ、巻線の巻数
を増して小さい励磁電流で駆動可能な電磁石装置とする
ことができる。また、非磁性板の厚み分脚部鉄心の高さ
を低くすれば、その分電磁接触器を小形化することがで
きるIn the electromagnet device according to the tenth aspect, the peripheral shape of the non-magnetic plate is the same as or equal to the end surface of each of the plurality of columnar leg cores on the bottom plate side, or is included in the peripheral shape of each bottom plate side end surface. Therefore, the required clearance is obtained between the upper surface of the leg core and the lower surface of the movable core while keeping the height of the leg core itself, and the height from the lower surface of the non-magnetic plate to the upper surface of the leg core is not Since the height is increased by the thickness of the magnetic plate, there is a margin in the height of the coil, that is, the winding width of the coil winding, and the number of windings can be increased to provide an electromagnet device that can be driven with a small exciting current. If the height of the leg core is reduced by the thickness of the nonmagnetic plate, the electromagnetic contactor can be downsized accordingly.
【図１】請求項１記載の発明による電磁石装置構成の第
１の実施例を、電磁石装置を電磁接触器に組み込んだ状
態で示す電磁接触器全体の断面図FIG. 1 is a cross-sectional view of an entire electromagnetic contactor showing a first embodiment of an electromagnet device according to the first aspect of the present invention in a state where the electromagnet device is incorporated in an electromagnetic contactor.
【図２】図１に示した電磁石装置における固定鉄心側の
磁路構成を示す斜視図FIG. 2 is a perspective view showing a magnetic path configuration on a fixed iron core side in the electromagnet device shown in FIG. 1;
【図３】図１に示した電磁石装置における固定鉄心側磁
路構成のための強磁性板構造の図２と異なる第１の実施
例を示す斜視図FIG. 3 is a perspective view showing a first embodiment different from FIG. 2 of a ferromagnetic plate structure for a fixed iron core magnetic path configuration in the electromagnet device shown in FIG. 1;
【図４】図１に示した電磁石装置における固定鉄心側磁
路構成のための強磁性板構造の図２と異なる第２の実施
例を示す斜視図FIG. 4 is a perspective view showing a second embodiment different from FIG. 2 of a ferromagnetic plate structure for a fixed iron core side magnetic path configuration in the electromagnet device shown in FIG. 1;
【図５】図１に示した電磁石装置における固定鉄心側磁
路構成のための強磁性板構造の図２と異なる第３の実施
例を示す斜視図FIG. 5 is a perspective view showing a third embodiment different from FIG. 2 of a ferromagnetic plate structure for a fixed-core-side magnetic path configuration in the electromagnet device shown in FIG. 1;
【図６】図３に示した強磁性板を用いた固定鉄心側磁路
構成を示す斜視図FIG. 6 is a perspective view showing a configuration of a fixed iron core side magnetic path using the ferromagnetic plate shown in FIG. 3;
【図７】請求項１記載の発明による電磁石装置構成の第
２の実施例を、電磁石装置を電磁接触器に組み込んだ状
態を示す電磁接触器全体の断面図FIG. 7 is a cross-sectional view of the entire electromagnetic contactor showing a state in which the electromagnet device is incorporated in the electromagnetic contactor according to the second embodiment of the configuration of the electromagnet device according to the first aspect of the present invention;
【図８】図７に示した強磁性板の斜視図FIG. 8 is a perspective view of the ferromagnetic plate shown in FIG. 7;
【図９】請求項８記載の発明による電磁石装置構成の一
実施例を、電磁石装置を電磁接触器に組み込んだ状態で
示す電磁接触器全体の断面図FIG. 9 is a cross-sectional view of the entire electromagnetic contactor, showing an embodiment of an electromagnet device according to the invention of claim 8 in a state where the electromagnet device is incorporated in the electromagnetic contactor.
【図１０】図９に示した電磁石装置で採用した、残留磁
束低減用非磁性板の電磁石装置閉磁路中への介装方法を
示す斜視図FIG. 10 is a perspective view showing a method of interposing a non-magnetic plate for reducing residual magnetic flux into a closed magnetic circuit of the electromagnet device, which is employed in the electromagnet device shown in FIG. 9;
【図１１】従来の電磁石装置構成の第１の例を、電磁石
装置を電磁接触器に組み込んだ状態で示す電磁接触器全
体の断面図FIG. 11 is a cross-sectional view of the entire electromagnetic contactor, showing a first example of a conventional electromagnet device configuration in a state where the electromagnet device is incorporated in the electromagnetic contactor.
【図１２】図１１に示した電磁石装置における固定鉄心
の構造を示す斜視図12 is a perspective view showing a structure of a fixed iron core in the electromagnet device shown in FIG.
【図１３】従来の電磁石装置構成の第２の例を電磁石装
置を電磁接触器に組み込んだ状態で示す電磁接触器全体
の断面図FIG. 13 is a cross-sectional view of the entire electromagnetic contactor showing a second example of a conventional electromagnet device configuration in a state where the electromagnet device is incorporated in the electromagnetic contactor.
【図１４】図１３に示した電磁石装置における固定鉄心
の構造を示す斜視図14 is a perspective view showing a structure of a fixed iron core in the electromagnet device shown in FIG.
【符号の説明】２ 電磁石装置 ３ 上部ケース ４ 固定接触子 ５ 可動接触子支え ６ 可動鉄心 ７ ピン ８ 可動接触子 １１ コイル １２ 固定鉄心 １３ 下部ケース １６ 脚部鉄心 １７ 底板 １９ ねじ ２１ 強磁性板 ２２Ａ 強磁性板 ２３Ｂ 強磁性板 ２２Ｃ 強磁性板 ２３ 非磁性板[Description of Signs] 2 Electromagnet device 3 Upper case 4 Fixed contact 5 Movable contact support 6 Movable core 7 Pin 8 Movable contact 11 Coil 12 Fixed core 13 Lower case 16 Leg core 17 Bottom plate 19 Screw 21 Ferromagnetic plate 22A Ferromagnetic plate 23B Ferromagnetic plate 22C Ferromagnetic plate 23 Non-magnetic plate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 関口 潔 神奈川県川崎市川崎区田辺新田１番１号 富士電機株式会社内 (72)発明者 渡辺 安正 神奈川県川崎市川崎区田辺新田１番１号 富士電機株式会社内 (56)参考文献 実開 昭57−115216（ＪＰ，Ｕ) 実開 昭57−136148（ＪＰ，Ｕ) 実公 昭49−37162（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) H01H 50/00 - 50/92 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kiyoshi Sekiguchi 1-1, Tanabe-Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture Inside Fuji Electric Co., Ltd. (72) Inventor Yasumasa Watanabe 1st, Tanabe-Nitta, Kawasaki-ku, Kawasaki-ku, Kanagawa Prefecture No. 1 Fuji Electric Co., Ltd. (56) References Japanese Utility Model Sho 57-115216 (JP, U) Japanese Utility Model Sho 57-136148 (JP, U) Japanese Utility Model Sho 49-37162 (JP, Y1) (58) Field (Int.Cl. 7 , DB name) H01H 50/00-50/92
Claims (10)
結された可動鉄心を吸引する固定鉄心が、これらの鉄心
を収容する電磁接触器固定フレームの下端面を閉鎖する
底板に複数の柱状脚部鉄心を立設，固定してなる電磁接
触器の電磁石装置において、柱状脚部鉄心の底板側の端
部相互間を強磁性板により連結していることを特徴とす
る電磁接触器の電磁石装置。1. A fixed core for sucking a movable core connected to a movable contact support for holding a movable contact is provided on a bottom plate for closing a lower end surface of an electromagnetic contactor fixed frame accommodating these cores. An electromagnet device of an electromagnetic contactor having a leg core standing and fixed, wherein the bottom plate side ends of the columnar leg cores are connected to each other by a ferromagnetic plate. apparatus.
鉄心の底板側端部相互間の強磁性板による連結は、強磁
性板を底板の上面に重ねて行うことを特徴とする電磁接
触器の電磁石装置。2. The electromagnetic device according to claim 1, wherein the connection between the ends of the columnar leg cores on the bottom plate side by a ferromagnetic plate is performed by overlapping the ferromagnetic plate on the upper surface of the bottom plate. Electromagnet device of contactor.
鉄心の底板側端部相互間の強磁性板による連結は、強磁
性板を底板の裏面に重ねて行うことを特徴とする電磁接
触器の電磁石装置。3. The electromagnetic device according to claim 1, wherein the ferromagnetic plate connects the end portions of the columnar leg cores on the bottom plate side to each other by superposing the ferromagnetic plate on the back surface of the bottom plate. Electromagnet device of contactor.
て、底板を非磁性板とすることを特徴とする電磁接触器
の電磁石装置。4. An electromagnet device for an electromagnetic contactor according to claim 1, wherein the bottom plate is a non-magnetic plate.
面に重ねる強磁性板は、複数の柱状の脚部鉄心の各底板
側端面すべてにかつ各端面の全面積に同時に接触可能な
平面形状をもつことを特徴とする電磁接触器の電磁石装
置。5. The ferromagnetic plate according to claim 2, wherein the ferromagnetic plate superposed on the upper surface of the bottom plate is a flat surface capable of simultaneously contacting all the bottom plate side end surfaces of the plurality of columnar leg cores and the entire area of each end surface. An electromagnet device for an electromagnetic contactor having a shape.
面に重ねる強磁性板は、複数の柱状脚部鉄心の各底面側
端面すべてを底板の上面に接触させるとともにみずから
は厚みの面が複数の柱状脚部鉄心の各底板側周面の一部
または全部に同時に接触状態に近接するように切り込み
または孔が形成されることを特徴とする電磁接触器の電
磁石装置。6. The ferromagnetic plate according to claim 2, wherein the ferromagnetic plate superimposed on the upper surface of the bottom plate has all of the bottom end surfaces of the plurality of columnar leg cores in contact with the upper surface of the bottom plate and has a thick surface. An electromagnet device for an electromagnetic contactor, wherein a cut or a hole is formed in a part or the entirety of each bottom plate side peripheral surface of a plurality of columnar leg cores so as to be close to a contact state at the same time.
ものにおいて、強磁性板には、ロール材として巻取りお
よび平板に巻戻し可能な厚さの板が用いられることを特
徴とする電磁接触器の電磁石装置。7. The ferromagnetic plate according to claim 1, wherein the ferromagnetic plate is a roll material having a thickness capable of being wound and unwound into a flat plate. Electromagnetic device of electromagnetic contactor.
結された可動鉄心を吸引する固定鉄心が、これらの鉄心
を収容する電磁接触器固定フレームの下端面を閉鎖する
底板に複数の柱状脚部鉄心を立設，固定してなる電磁接
触器の電磁石装置において、底板を強磁性板とするとと
もに、複数の柱状脚部鉄心の各底板側端面と底板との間
に非磁性板が脚部鉄心各底板側端面に密着させて介装さ
れていることを特徴とする電磁接触器の電磁石装置。8. A fixed core for attracting a movable core connected to a movable contact support for holding a movable contact is provided with a plurality of columnar members on a bottom plate for closing a lower end surface of an electromagnetic contactor fixed frame accommodating these cores. In an electromagnetic device of an electromagnetic contactor in which leg cores are erected and fixed, a bottom plate is made of a ferromagnetic plate, and a non-magnetic plate is provided between each bottom plate side end face of the plurality of columnar leg cores and the bottom plate. An electromagnet device for an electromagnetic contactor, wherein said electromagnet device is interposed so as to be in close contact with each bottom plate side end surface of said core.
状脚部鉄心の各底板側端面と底板との間に、かつ各底板
側端面に密着させて介装される非磁性板は、周縁形状
を、複数の柱状脚部鉄心の各底板側端面すべてを同時に
内包可能な形状とすることを特徴とする電磁接触器の電
磁石装置。9. The non-magnetic plate interposed between the bottom plate-side end surfaces of the plurality of columnar leg cores and the bottom plate and in close contact with the bottom plate-side end surfaces according to claim 8, An electromagnet device for an electromagnetic contactor, characterized in that the peripheral shape is a shape capable of simultaneously including all the bottom plate side end faces of the plurality of columnar leg cores.
柱状脚部鉄心の各底板側端面と底板との間に、かつ各底
板側端面に密着させて介装される非磁性板は、周縁形状
を、複数の柱状脚部鉄心の各底板側端面と同形等大の、
あるいは各底板側端面の周縁形状にそれぞれ内包される
形状とすることを特徴とする電磁接触器の電磁石装置。10. The non-magnetic plate interposed between and in close contact with each bottom plate side end surface of the plurality of columnar leg cores and the bottom plate side end surface according to claim 8, The peripheral shape has the same shape and size as the bottom plate side end faces of the plurality of columnar leg cores.
Alternatively, the electromagnet device of the electromagnetic contactor has a shape which is included in the peripheral shape of each bottom plate side end surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11806895A JP3166556B2 (en) | 1994-06-02 | 1995-05-17 | Electromagnetic device of electromagnetic contactor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12085594 | 1994-06-02 | ||
| JP6-120855 | 1994-06-02 | ||
| JP11806895A JP3166556B2 (en) | 1994-06-02 | 1995-05-17 | Electromagnetic device of electromagnetic contactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0850843A JPH0850843A (en) | 1996-02-20 |
| JP3166556B2 true JP3166556B2 (en) | 2001-05-14 |
Family
ID=26456075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11806895A Expired - Fee Related JP3166556B2 (en) | 1994-06-02 | 1995-05-17 | Electromagnetic device of electromagnetic contactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3166556B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7127802B1 (en) * | 1997-11-21 | 2006-10-31 | Fonar Corporation | Method of fabricating a composite plate |
| EP1794609A2 (en) | 2004-09-27 | 2007-06-13 | Fonar Corporation | Magnetic resonance imaging system, apparatus and associated methods |
| JP4761913B2 (en) * | 2005-10-06 | 2011-08-31 | 株式会社東芝 | Electromagnetic actuator |
| US9386939B1 (en) | 2007-05-10 | 2016-07-12 | Fonar Corporation | Magnetic resonance imaging of the spine to detect scoliosis |
| US11141080B1 (en) | 2013-03-13 | 2021-10-12 | Fonar Corporation | Cervical vertebra angle measurement |
| FR3054924B1 (en) * | 2016-08-04 | 2020-12-04 | Schneider Electric Ind Sas | MOBILE PART OF AN ELECTROMAGNETIC ACTUATOR FOR AN ELECTRIC CONTACTOR, ACTUATOR INCLUDING SUCH PART AND CONTACTOR |
-
1995
- 1995-05-17 JP JP11806895A patent/JP3166556B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0850843A (en) | 1996-02-20 |
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