JP3045582B2 - Magnetic levitation device - Google Patents
Magnetic levitation deviceInfo
- Publication number
- JP3045582B2 JP3045582B2 JP3297759A JP29775991A JP3045582B2 JP 3045582 B2 JP3045582 B2 JP 3045582B2 JP 3297759 A JP3297759 A JP 3297759A JP 29775991 A JP29775991 A JP 29775991A JP 3045582 B2 JP3045582 B2 JP 3045582B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic flux
- electromagnet
- levitation device
- flux generator
- 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 - Fee Related
Links
Landscapes
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、磁性体を磁気的吸引力
により浮上させた状態に維持する磁気浮上装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic levitation apparatus for maintaining a magnetic body in a state of being floated by magnetic attraction.
【０００２】[0002]
【従来の技術】磁気浮上装置は、一般に、磁性体に磁気
的吸引力を作用させる電磁石と、該電磁石の磁極面と磁
性体との間の距離を検出する距離センサと、該センサの
出力信号を基に、磁性体を浮上させかつその状態に維持
する磁束を発生させるべく電磁石に供給する励磁電流を
制御する制御回路とを含む。このような磁気浮上装置
は、磁性体を、電磁石の磁極面を経る磁束により、電磁
石の磁極面に対し所定の高さに浮上させかつその状態に
維持する。2. Description of the Related Art A magnetic levitation device generally includes an electromagnet for applying a magnetic attractive force to a magnetic body, a distance sensor for detecting a distance between a magnetic pole surface of the electromagnet and the magnetic body, and an output signal of the sensor. And a control circuit for controlling an exciting current supplied to the electromagnet to generate a magnetic flux for levitating the magnetic body and maintaining the magnetic body in that state. In such a magnetic levitation device, the magnetic body is levitated to a predetermined height with respect to the magnetic pole surface of the electromagnet by magnetic flux passing through the magnetic pole surface of the electromagnet, and is maintained in that state.
【０００３】この種の磁気浮上装置において、磁性体を
浮上させかつその状態に安定に維持する上で、磁性体が
所定の高さに浮上しかつ安定しているときの磁性体と電
磁石の磁極面との間の距離を可能な限り大きくすること
が望まれている。これは、磁気的吸引力が距離の２乗に
反比例して変化するから、磁性体と磁極面との間の距離
が小さいと、前記距離にわずかな変化があっても、電磁
石へ供給される励磁電流を大幅にかつ迅速に修正しない
かぎり、磁性体を安定に維持することができず、励磁電
流の制御が極めて困難である、ことに起因する。In this type of magnetic levitation apparatus, in order to levitate a magnetic body and stably maintain the state, the magnetic body and the magnetic poles of the electromagnet when the magnetic body floats to a predetermined height and is stable It is desired to make the distance between the surfaces as large as possible. This is because the magnetic attractive force changes in inverse proportion to the square of the distance, so if the distance between the magnetic body and the pole face is small, even if there is a slight change in the distance, it is supplied to the electromagnet. Unless the exciting current is significantly and quickly corrected, the magnetic body cannot be stably maintained, and it is extremely difficult to control the exciting current.
【０００４】このため、従来の磁気浮上装置では、磁極
面が大きい大型の電磁石を用いることにより、磁性体と
磁極面との間の距離を大きくしている。しかし、大きな
平面の磁極面を有する磁気浮上装置では、磁性体を浮上
させる磁束が磁極面の周縁部に偏る傾向があるから、磁
性体に作用する磁束が不規則になり、その結果磁性体を
安定に維持することができない。特に、小さい磁性体を
浮上させようとすると、磁束の偏りに起因して、磁極面
の周縁部への磁性体の吸引箇所が定まらず、その結果距
離センサを配置すべき位置も定まらず、磁性体を安定に
浮上させかつその状態に維持することができない。ま
た、従来の磁気浮上装置では、磁性体をこれの上方に配
置された磁極面に吸引するだけであるから、電磁石に多
量の電力を供給しなければならない。For this reason, in the conventional magnetic levitation apparatus, the distance between the magnetic body and the magnetic pole surface is increased by using a large electromagnet having a large magnetic pole surface. However, in a magnetic levitation device having a large flat magnetic pole surface, the magnetic flux for levitating the magnetic material tends to be biased toward the periphery of the magnetic pole surface, so that the magnetic flux acting on the magnetic material becomes irregular, and as a result, the magnetic material It cannot be kept stable. In particular, when trying to levitate a small magnetic material, the location of the magnetic material attracted to the periphery of the magnetic pole surface is not determined due to the bias of the magnetic flux, and as a result, the position where the distance sensor should be placed is not determined, Inability to levitate and maintain the body stably. Further, in the conventional magnetic levitation apparatus, a large amount of electric power must be supplied to the electromagnet because the magnetic body is merely attracted to the magnetic pole surface disposed above the magnetic body.
【０００５】[0005]
【解決しようとする課題】本発明は、磁性体を所定の位
置に安定に浮上させかつ維持することができ、吸引用電
磁石での消費電力量を少なくすることができる、磁気浮
上装置を提供することを目的とする。SUMMARY OF THE INVENTION The present invention provides a magnetic levitation device which can stably float and maintain a magnetic body at a predetermined position and reduce the amount of power consumed by an attraction electromagnet. The purpose is to:
【０００６】[0006]
【解決手段、作用、効果】本発明の磁気浮上装置は、水
平方向に伸びる上部ヨークと、該上部ヨークの下方に間
隔をおいて配置され、前記上部ヨークに磁気的に接続さ
れた下部ヨークと、磁性体を吸引する磁束を発生する、
前記上部ヨークに磁気的に接続された電磁石と、前記電
磁石で発生される磁束を前記磁性体に作用させるべく前
記上部ヨークに磁気的に接続された磁極であって下方に
向く凸部を有する磁極と、前記磁性体に反発用の磁束を
作用させるべく前記凸部の下方に配置された磁束発生器
とを含むことを特徴とする。A magnetic levitation apparatus according to the present invention comprises an upper yoke extending in a horizontal direction, a lower yoke disposed under the upper yoke with a space therebetween, and magnetically connected to the upper yoke. Generate magnetic flux that attracts magnetic material,
An electromagnet magnetically connected to the upper yoke, and a magnetic pole magnetically connected to the upper yoke for causing a magnetic flux generated by the electromagnet to act on the magnetic body, the magnetic pole having a downwardly facing convex portion And a magnetic flux generator disposed below the protrusion to cause a repulsive magnetic flux to act on the magnetic body.
【０００７】磁性体は、電磁石から発生される磁束によ
り、上側の極性が凸部のそれと逆になり、下側の極性が
凸部のそれと同じになるように、誘導される。電磁石か
ら発生される磁束は凸部に集中し、それにより磁性体は
常に凸部に向けて吸引される。このため、本発明によれ
ば、磁性体を所定の位置に安定に浮上させかつ維持する
ことができ、特に小さな磁性体でも磁極面から大きな距
離を隔てて、安定に浮上させかつその状態に維持するこ
とができる。また、磁束発生器は、該磁束発生器の上側
の極性が磁性体の下側のそれと同じになる磁束を発生
し、したがって、磁束発生器は磁性体を押し上げる反発
力を磁性体に作用させる。このため、本発明によれば、
吸引用電磁石での消費電力量を少なくすることができ
る。[0007] The magnetic material is induced by the magnetic flux generated from the electromagnet such that the upper polarity is opposite to that of the convex portion and the lower polarity is the same as that of the convex portion. The magnetic flux generated from the electromagnet concentrates on the protrusion, whereby the magnetic material is always attracted toward the protrusion. Therefore, according to the present invention, the magnetic material can be stably levitated and maintained at a predetermined position. Particularly, even a small magnetic material can be stably levitated at a large distance from the magnetic pole surface and maintained in that state. can do. Further, the magnetic flux generator generates a magnetic flux in which the polarity on the upper side of the magnetic flux generator is the same as that on the lower side of the magnetic body, and therefore, the magnetic flux generator exerts a repulsive force on the magnetic body to push up the magnetic body. Therefore, according to the present invention,
The power consumption of the attraction electromagnet can be reduced.
【０００８】前記磁束発生器は、少なくとも１つの永久
磁石により筒状に形成することができる。この場合、前
記永久磁石は、前記磁束発生器の軸線方向に磁化されて
おり、また磁化方向が上下方向となるように前記下部ヨ
ークに配置される。前記磁束発生器は、環状に巻かれた
励磁コイルを含むことができる。この場合、該励磁コイ
ルは、これの軸線方向が上下方向となるように前記下部
ヨークに配置される。上記のいずれの磁束発生器の場合
も、軸線上の部位の反発力よりその周りの部位の反発力
が大きいから、磁性体は軸線上に安定に維持される。特
に、上下方向に長い磁性体の場合は、その下端部が安定
に維持される。[0008] The magnetic flux generator may be formed in a cylindrical shape by at least one permanent magnet. In this case, the permanent magnet is magnetized in the axial direction of the magnetic flux generator, and is arranged on the lower yoke such that the magnetization direction is the vertical direction. The magnetic flux generator may include an exciting coil wound in an annular shape. In this case, the exciting coil is arranged on the lower yoke such that the axis of the exciting coil is in the vertical direction. In any of the magnetic flux generators described above, the repulsive force of the surrounding parts is larger than the repulsive force of the parts on the axis, so that the magnetic material is stably maintained on the axis. In particular, in the case of a vertically long magnetic body, its lower end is stably maintained.
【０００９】前記上部および下部ヨークを少なくとも１
つの永久磁石を介して磁気的に接続することが好まし
い。これにより、電磁石における消費電力量をより少な
くすることができる。しかし、前記電磁石を鉄心および
該鉄心に巻かれた励磁コイルで形成し、前記上部および
下部ヨークを前記鉄心を介して磁気的に接続してもよい
し、また単なる磁性体により両ヨークを磁気的に接続し
てもよい。前記電磁石の励磁コイルを前記磁極に巻き付
けてもよい。At least one of the upper and lower yokes is
It is preferable to magnetically connect via two permanent magnets. Thus, the power consumption of the electromagnet can be further reduced. However, the electromagnet may be formed of an iron core and an exciting coil wound around the iron core, and the upper and lower yokes may be magnetically connected via the iron core. May be connected. An exciting coil of the electromagnet may be wound around the magnetic pole.
【００１０】[0010]
【実施例】図１を参照するに、磁気浮上装置１０は、磁
性体１２を磁気的吸引力により浮上させた状態に維持す
る装置として用いられる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a magnetic levitation device 10 is used as a device for maintaining a state in which a magnetic body 12 is levitated by magnetic attraction.
【００１１】磁気浮上装置１０は、水平方向に伸びる上
部ヨーク１４と、上部ヨーク１４の下方に間隔をおいて
配置された下部ヨーク１６と、上部ヨーク１４に配置さ
れ、磁性体１２を吸引する磁束を発生する電磁石１８
と、電磁石１８で発生された磁束を磁性体１２に作用さ
せる磁極２０と、磁性体１２に反発用の磁束を作用させ
る磁束発生器２２と、両ヨーク１４，１６を磁気的に接
続する複数の連結体２４と、磁性体１２に作用する磁界
の強さを検出するセンサ２６と、電磁石１２へ供給する
励磁電流を制御する制御回路２８とを含む。The magnetic levitation device 10 includes an upper yoke 14 extending in the horizontal direction, a lower yoke 16 arranged below the upper yoke 14 with a space therebetween, and a magnetic flux attracting the magnetic body 12 disposed on the upper yoke 14. Generating electromagnet 18
A magnetic pole 20 for applying a magnetic flux generated by the electromagnet 18 to the magnetic body 12, a magnetic flux generator 22 for applying a repulsive magnetic flux to the magnetic body 12, and a plurality of magnetic connections between the yokes 14 and 16. It includes a coupling body 24, a sensor 26 for detecting the strength of a magnetic field acting on the magnetic body 12, and a control circuit 28 for controlling an exciting current supplied to the electromagnet 12.
【００１２】ヨーク１４，１６は、それぞれ、円形ある
いは四角形の板状の磁性体からなる。電磁石１８は、磁
極２０に巻かれた励磁コイル３０を有する。磁極２０
は、断面円形の形状を有しており、また上部ヨーク１４
の下面から下方へ伸びている。図示の例では、磁極２０
は、電磁石１８の鉄心としても作用する。The yokes 14 and 16 are each made of a circular or square plate-like magnetic material. The electromagnet 18 has an exciting coil 30 wound around a magnetic pole 20. Magnetic pole 20
Has a circular cross-section and has an upper yoke 14
Extends downward from the lower surface of the. In the illustrated example, the magnetic pole 20
Also acts as an iron core of the electromagnet 18.
【００１３】磁極２０は、下方へ向く凸部３２を下端部
に有する。凸部３２の下端面は、１つの磁極面として作
用する。凸部３２は、図示の例では図２（Ａ）に示すよ
うに短い円柱状の形状を有する。しかし、図２（Ｂ）〜
（Ｅ）に示すように、短い角柱状、円錐台状、角錐台状
または半球状の凸部３４，３６，３８または４０として
もよい。また、図２（Ｆ）〜（Ｈ）に示すように、磁極
２０の対応する端部を、円錐台状、角錐台状または半球
形にすることにより形成された凸部４２，４４または４
６としてもよい。The magnetic pole 20 has a downwardly projecting portion 32 at its lower end. The lower end surface of the projection 32 acts as one magnetic pole surface. The projection 32 has a short columnar shape in the illustrated example, as shown in FIG. However, FIG.
As shown in (E), a short prismatic, truncated cone, truncated pyramid or hemispherical projection 34, 36, 38 or 40 may be used. Further, as shown in FIGS. 2 (F) to 2 (H), the protrusions 42, 44 or 4 formed by forming the corresponding end of the magnetic pole 20 into a truncated cone, truncated pyramid or hemisphere.
It may be 6.
【００１４】反発用の磁束発生器２２は、図３（Ａ）に
示すように筒状の永久磁石４８により円筒状に形成され
ている。しかし、磁束発生器２２は、図３（Ｂ）に示す
ように複数の永久磁石５０により円筒状に形成してもよ
い。また、円筒状の磁束発生器とする代りに、図３
（Ｃ）に示すように少なくとも１つの永久磁石５２によ
り角筒状の磁束発生器としてもよい。The repulsion magnetic flux generator 22 is formed in a cylindrical shape by a cylindrical permanent magnet 48 as shown in FIG. However, the magnetic flux generator 22 may be formed in a cylindrical shape by a plurality of permanent magnets 50 as shown in FIG. Also, instead of using a cylindrical magnetic flux generator, FIG.
As shown in (C), a magnetic flux generator having a rectangular cylindrical shape may be formed by at least one permanent magnet 52.
【００１５】磁束発生器２２が少なくとも１つの永久磁
石により形成された場合、永久磁石は、磁束発生器２２
の軸線方向に磁化されており、また磁化方向が上下方向
となりかつ上端の極性が電磁石１８の磁束による磁性体
１２の下端の極性と同じになるように下部ヨーク１６に
配置される。磁束発生器２２が複数の永久磁石により形
成された場合、隣り合う永久磁石を、接触させてもよい
し、接触させなくてもよい。If the magnetic flux generator 22 is formed by at least one permanent magnet, the permanent magnet
Are arranged in the lower yoke 16 such that the magnetization direction is in the vertical direction and the polarity of the upper end is the same as the polarity of the lower end of the magnetic body 12 due to the magnetic flux of the electromagnet 18. When the magnetic flux generator 22 is formed by a plurality of permanent magnets, adjacent permanent magnets may or may not be in contact.
【００１６】磁束発生器２２は、環状に巻かれた励磁コ
イルを含む電磁石、または筒状の鉄心とこれに巻かれた
励磁コイルとからなる電磁石であってもよい。この場
合、励磁コイルは、磁束発生器２２の軸線が上下方向と
なるように下部ヨーク１６に配置され、また上方の側の
部位の極性が電磁石１８の磁束による磁性体１２の下端
の極性と同じになるような励磁電流を受ける。The magnetic flux generator 22 may be an electromagnet including an exciting coil wound in a ring or an electromagnet including a cylindrical iron core and an exciting coil wound therearound. In this case, the exciting coil is arranged on the lower yoke 16 such that the axis of the magnetic flux generator 22 is in the vertical direction, and the polarity of the upper portion is the same as the polarity of the lower end of the magnetic body 12 due to the magnetic flux of the electromagnet 18. Receiving an exciting current such that
【００１７】各連結体２４は、上下方向に磁化された永
久磁石からなり、また両ヨーク１４，１６を互いに連結
している。Each connecting body 24 is made of a permanent magnet magnetized in the vertical direction, and connects the yokes 14 and 16 to each other.
【００１８】センサ２６は、図示の例では、凸部３２を
経る磁束の量を検出するものであり、凸部３２に配置さ
れている。このようなセンサ２６としては、ホール素
子、磁気抵抗素子、サーチコイル等を用いることができ
る。いずれのタイプのセンサを用いる場合も、センサは
凸部３２の端面に配置することができる。また、サーチ
コイルを用いる場合は、凸部３２の周りに配置してよ
い。In the example shown in the figure, the sensor 26 detects the amount of magnetic flux passing through the projection 32 and is disposed on the projection 32. As such a sensor 26, a Hall element, a magnetoresistive element, a search coil, or the like can be used. Regardless of which type of sensor is used, the sensor can be arranged on the end face of the projection 32. When a search coil is used, it may be arranged around the protrusion 32.
【００１９】制御回路２８は、凸部３２と磁性体１２と
の間の距離を設定する位置設定器５４と、センサ２６の
出力信号を基に、センサ２６を経る磁束量に対応する電
気信号を発生する検出回路５６と、位置設定器５４およ
び検出回路５６の出力信号を比較し、両信号の差に対応
する電気信号を出力する比較器５８と、比較器５８の出
力信号を基に、磁性体１２と凸部３２との間の距離が位
置設定器５４に設定された値となるように、励磁コイル
３０へ供給する励磁電流を調節する電力増幅器６０とを
備える。The control circuit 28 includes a position setting device 54 for setting a distance between the convex portion 32 and the magnetic body 12, and an electric signal corresponding to the amount of magnetic flux passing through the sensor 26 based on the output signal of the sensor 26. The generated detection circuit 56 compares the output signals of the position setting device 54 and the detection circuit 56 with each other, and outputs an electric signal corresponding to the difference between the two signals. And a power amplifier (60) for adjusting an exciting current supplied to the exciting coil (30) such that a distance between the body (12) and the convex portion (32) becomes a value set in the position setting device (54).
【００２０】磁性体１２は、図示の例では球の形を有す
る。しかし、磁性体１２の形状は、直方体状、角錐体
状、柱状等であってもよい。磁性体１２は、磁束発生器
２２と凸部３２との間に配置される。磁性体１２のう
ち、凸部３２に向けられる部位は、凸部３２と同様の凸
部のように、磁束が集中する形状を有することが好まし
い。The magnetic body 12 has a spherical shape in the illustrated example. However, the shape of the magnetic body 12 may be a rectangular parallelepiped, a pyramid, a column, or the like. The magnetic body 12 is arranged between the magnetic flux generator 22 and the projection 32. It is preferable that the portion of the magnetic body 12 that faces the convex portion 32 has a shape in which the magnetic flux is concentrated, like the convex portion similar to the convex portion 32.
【００２１】図示の例では、磁極２０は円柱状の形状を
有するが、角柱状、楕円柱状等他の形状であってもよ
い。また、磁気浮上装置１０の平面形状は、円形、楕円
形、四角形等の形状とすることができる。In the illustrated example, the magnetic pole 20 has a columnar shape, but may have another shape such as a prismatic shape, an elliptical shape, or the like. Further, the planar shape of the magnetic levitation device 10 can be a shape such as a circle, an ellipse, and a square.
【００２２】磁束発生器２２および連結体２４の磁化方
向が図１に示すとおりであるとすると、磁極２０を図１
に示すように励起させる励磁電流が励磁コイル３０に供
給される。これにより、磁性体１２の上側の極性は凸部
３２の極性と逆にとなり、磁性体１２の下側の極性は磁
束発生器２２の上部の側の極性と同じになる。Assuming that the magnetization directions of the magnetic flux generator 22 and the coupling body 24 are as shown in FIG.
As shown in (1), an exciting current to be excited is supplied to the exciting coil 30. As a result, the polarity of the upper side of the magnetic body 12 is opposite to the polarity of the projection 32, and the lower side of the magnetic body 12 is the same as the upper side of the magnetic flux generator 22.
【００２３】励磁コイル３０により発生される磁束は、
図１において符号６２，６４で示すような経路を経る
が、その大部分は凸部３２に集中し、磁性体１２を凸部
３２に向けて吸引する。また、磁束発生器２２により発
生される磁束は、図１において符号６６，６８で示すよ
うな経路を経るが、その大部分は磁性体１２を凸部３２
に向けて押し上げる反発用磁束として作用する。The magnetic flux generated by the exciting coil 30 is
In FIG. 1, the magnetic material 12 passes through the paths indicated by reference numerals 62 and 64. The magnetic flux generated by the magnetic flux generator 22 passes through the paths indicated by reference numerals 66 and 68 in FIG.
And acts as a repulsive magnetic flux that is pushed upward.
【００２４】このため、磁性体１２は、磁性体１２の自
重が電磁石１８からの磁束による磁気的吸引力と磁束発
生器２２からの磁束による磁気的反発力との和の値に釣
り合う位置に浮上され、その状態に維持される。また、
励磁コイル３０での消費電力量は、磁束発生器２２の反
発用磁束に対応する値だけ減少する。For this reason, the magnetic body 12 floats at a position where the weight of the magnetic body 12 balances the value of the sum of the magnetic attractive force due to the magnetic flux from the electromagnet 18 and the magnetic repulsive force due to the magnetic flux from the magnetic flux generator 22. And maintained in that state. Also,
The amount of power consumed by the exciting coil 30 decreases by a value corresponding to the repulsive magnetic flux of the magnetic flux generator 22.
【００２５】磁性体１２と凸部３２との間の距離が変化
すると、それに応じてセンサ２６を経る磁束量が変化す
るから、制御回路２８は、前記距離の変化を修正すべく
励磁コイル３０へ供給する励磁電流を制御する。When the distance between the magnetic body 12 and the convex portion 32 changes, the amount of magnetic flux passing through the sensor 26 changes accordingly. Therefore, the control circuit 28 controls the exciting coil 30 to correct the change in the distance. Controls the supplied excitation current.
【００２６】励磁コイル３０により発生される磁束量が
変化した場合も、センサ２６を経る磁束量が変化するか
ら、制御回路２８は、前記磁束量の変化を修正すべく励
磁コイル３０へ供給する励磁電流を制御する。When the amount of magnetic flux generated by the exciting coil 30 changes, the amount of magnetic flux passing through the sensor 26 also changes. Therefore, the control circuit 28 supplies the exciting coil 30 with an excitation to correct the change in the amount of magnetic flux. Control the current.
【００２７】磁気浮上装置１０によれば、磁束発生器２
２が筒状であるから、磁束発生器２２の軸線上の部位の
反発力よりその周りの部位の反発力が大きくなる。その
結果、磁束発生器２２の磁束６８により、反発用磁界の
谷間が磁性体１２の下側に形成され、磁性体１２は磁束
発生器２２の軸線上にすなわち反発用磁界の谷間に安定
に維持される。特に、上下方向に長い磁性体の場合は、
その下端部が安定に維持される。According to the magnetic levitation device 10, the magnetic flux generator 2
Since 2 has a cylindrical shape, the repulsive force of a portion on the axis of the magnetic flux generator 22 becomes larger than the repulsive force of the portion around the axis. As a result, the valley of the repulsion magnetic field is formed below the magnetic body 12 by the magnetic flux 68 of the magnetic flux generator 22, and the magnetic body 12 is stably maintained on the axis of the magnetic flux generator 22, that is, the valley of the repulsion magnetic field. Is done. In particular, in the case of a vertically long magnetic material,
The lower end is kept stable.
【００２８】また、磁気浮上装置１０によれば、連結体
２４として永久磁石を用いているから、電磁石１８の励
磁コイル３０での消費電力量をより少なくすることがで
きる。しかし、連結体２４として永久磁石を用る代り
に、連結用磁性体を用いてもよく、また該連結用磁性体
を電磁石の鉄心として用い、これの周りに励磁コイルを
配置してもよいし、連結用磁性体を電磁石１８の鉄心と
して用い、これの周りに電磁石１８の励磁コイル３０を
配置してもよい。Further, according to the magnetic levitation device 10, since the permanent magnet is used as the connecting body 24, the power consumption of the exciting coil 30 of the electromagnet 18 can be further reduced. However, instead of using a permanent magnet as the connecting body 24, a connecting magnetic body may be used, and the connecting magnetic body may be used as an iron core of an electromagnet, and an exciting coil may be arranged around the core. Alternatively, the connecting magnetic body may be used as an iron core of the electromagnet 18, and the excitation coil 30 of the electromagnet 18 may be arranged around the magnetic core.
【００２９】本発明の磁気浮上装置は、磁性体自体を展
示する物品展示装置、磁性体と組み合せた置物、装飾体
等に用いることができる。また、磁性体の全表面に吹き
付け塗装を施す際に磁性体を非接触で保持する装置等と
しても用いることができる。The magnetic levitation device of the present invention can be used for an article display device for displaying the magnetic material itself, an ornament in combination with the magnetic material, a decorative body, and the like. Further, it can also be used as a device or the like for holding the magnetic material in a non-contact manner when spray coating the entire surface of the magnetic material.
【図１】本発明の磁気浮上装置の一実施例を示す断面図
である。FIG. 1 is a sectional view showing one embodiment of a magnetic levitation device of the present invention.
【図２】凸部の実施例を示す斜視図である。FIG. 2 is a perspective view showing an embodiment of a projection.
【図３】反発用磁束発生器の実施例を示す平面図であ
る。FIG. 3 is a plan view showing an embodiment of a repulsion magnetic flux generator.
１０ 磁気浮上装置 １２ 磁性体 １４ 上部ヨーク １６ 下部ヨーク １８ 電磁石 ２０ 磁極 ２２ 反発用磁束発生器 ２４ 連結体 ２６ センサ ２８ 制御回路 ３０ 励磁コイル ３２，３４，３６，３８，４０，４２，４４，４６ 凸
部 ４８，５０，５２ 永久磁石Reference Signs List 10 magnetic levitation device 12 magnetic body 14 upper yoke 16 lower yoke 18 electromagnet 20 magnetic pole 22 repulsion magnetic flux generator 24 connected body 26 sensor 28 control circuit 30 excitation coil 32, 34, 36, 38, 40, 42, 44, 46 convex Part 48, 50, 52 permanent magnet
Claims (6)
ヨークの下方に間隔をおいて配置され、前記上部ヨーク
に磁気的に接続された下部ヨークと、磁性体を吸引する
磁束を発生する、前記上部ヨークに磁気的に接続された
電磁石と、前記電磁石で発生される磁束を前記磁性体に
作用させるべく前記上部ヨークに磁気的に接続された磁
極であって下方に向く凸部を有する磁極と、前記磁性体
に反発用の磁束を作用させるべく前記凸部の下方に配置
された磁束発生器とを含む、磁気浮上装置。An upper yoke extending in a horizontal direction, a lower yoke disposed under the upper yoke at an interval and magnetically connected to the upper yoke, and generating a magnetic flux for attracting a magnetic body; An electromagnet magnetically connected to the upper yoke, and a magnetic pole magnetically connected to the upper yoke for causing a magnetic flux generated by the electromagnet to act on the magnetic body, the magnetic pole having a downwardly facing convex portion A magnetic levitation device comprising: a magnetic flux generator disposed below the protrusion to cause a repulsive magnetic flux to act on the magnetic body.
磁石により筒状に形成されており、前記永久磁石は前記
磁束発生器の軸線方向に磁化されており、また前記永久
磁石は磁化方向が上下方向となるように前記下部ヨーク
に配置されている、請求項１に記載の磁気浮上装置。2. The magnetic flux generator is formed in a cylindrical shape by at least one permanent magnet. The permanent magnet is magnetized in the axial direction of the magnetic flux generator. The magnetic levitation device according to claim 1, wherein the magnetic levitation device is disposed on the lower yoke so as to be oriented.
イルを含み、該励磁コイルはこれの軸線方向が上下方向
となるように前記下部ヨークに配置されている、請求項
１に記載の磁気浮上装置。3. The magnetic flux generator according to claim 1, wherein the magnetic flux generator includes an exciting coil wound in a ring shape, and the exciting coil is arranged on the lower yoke such that an axial direction of the exciting coil is vertical. Magnetic levitation device.
くとも１つの永久磁石により磁気的に接続されている、
請求項１，２または３に記載の磁気浮上装置。4. The upper and lower yokes are magnetically connected by at least one permanent magnet.
The magnetic levitation device according to claim 1, 2 or 3.
た励磁コイルを含み、前記上部および前記下部ヨークは
前記鉄心を介して磁気的に接続されている、請求項１，
２または３に記載の磁気浮上装置。5. The electromagnet includes an iron core and an exciting coil wound on the iron core, and the upper and lower yokes are magnetically connected via the iron core.
4. The magnetic levitation device according to 2 or 3.
励磁コイルを含み、前記磁極は前記電磁石の鉄心を兼ね
ている、請求項１，２または３に記載の磁気浮上装置。6. The magnetic levitation device according to claim 1, wherein the electromagnet includes an excitation coil wound around the magnetic pole, and the magnetic pole also serves as an iron core of the electromagnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3297759A JP3045582B2 (en) | 1991-10-18 | 1991-10-18 | Magnetic levitation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3297759A JP3045582B2 (en) | 1991-10-18 | 1991-10-18 | Magnetic levitation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05109526A JPH05109526A (en) | 1993-04-30 |
| JP3045582B2 true JP3045582B2 (en) | 2000-05-29 |
Family
ID=17850807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3297759A Expired - Fee Related JP3045582B2 (en) | 1991-10-18 | 1991-10-18 | Magnetic levitation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3045582B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4761483B2 (en) * | 2009-03-10 | 2011-08-31 | 株式会社東栄科学産業 | Electromagnet, magnetic field application device, and magnetic field application system |
-
1991
- 1991-10-18 JP JP3297759A patent/JP3045582B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05109526A (en) | 1993-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0845085B1 (en) | Magnetic suspension system | |
| US7505243B2 (en) | Magnetic levitation apparatus | |
| US8169114B2 (en) | Large gap horizontal field magnetic levitator | |
| US6275127B1 (en) | Solar powered magnetic support for display | |
| CA2157194C (en) | Magnetic levitation device and method | |
| US20070170798A1 (en) | Levitation device | |
| JP3045582B2 (en) | Magnetic levitation device | |
| JP5670231B2 (en) | Magnetic levitation controller | |
| JP2021145929A (en) | Article display device, method of manufacturing the same, and method for using the same | |
| CN111786664A (en) | Suspension switch device | |
| KR101477638B1 (en) | Apparatus for floating object using magnetic force | |
| JPH04286303A (en) | Magnetic levitation device | |
| US20110025153A1 (en) | optimised levitation device | |
| Takase et al. | Basic study on magnetic levitation system using superconducting coil | |
| KR100878619B1 (en) | Levitation rotation apparatus using electromagnet and rotation method thereof | |
| WO2007074407A2 (en) | Levitation device | |
| JP2010003997A (en) | Magnetic flotation device | |
| GB1509673A (en) | Direct current electro-magnet | |
| JPS6145843B2 (en) | ||
| JPH07123321B2 (en) | Suction type magnetic levitation guide device | |
| TW558530B (en) | Magnetic levitation system of carrier | |
| CN116915091A (en) | Lateral balance type magnetic suspension device and method | |
| JPS62189901A (en) | Attracting magneto-levitation guide device | |
| JPS63155706A (en) | Magnetic levitation apparatus | |
| JPH02270739A (en) | Magnetic floating device for magnetic plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080317 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090317 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090317 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100317 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100317 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110317 Year of fee payment: 11 |
|
| LAPS | Cancellation because of no payment of annual fees |