JP2002238240A - Linear motor - Google Patents
Linear motorInfo
- Publication number
- JP2002238240A JP2002238240A JP2001049625A JP2001049625A JP2002238240A JP 2002238240 A JP2002238240 A JP 2002238240A JP 2001049625 A JP2001049625 A JP 2001049625A JP 2001049625 A JP2001049625 A JP 2001049625A JP 2002238240 A JP2002238240 A JP 2002238240A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- linear motor
- longitudinal direction
- movable
- phase
- 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.)
- Granted
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000004046 wet winding Methods 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 18
- 238000004804 winding Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- IQQRAVYLUAZUGX-UHFFFAOYSA-N 1-butyl-3-methylimidazolium Chemical compound CCCCN1C=C[N+](C)=C1 IQQRAVYLUAZUGX-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 101000854908 Homo sapiens WD repeat-containing protein 11 Proteins 0.000 description 1
- 102100020705 WD repeat-containing protein 11 Human genes 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、リニアモータに係
り、特に、位相制御駆動リニアモータに関する。The present invention relates to a linear motor, and more particularly to a phase control drive linear motor.
【０００２】[0002]
【従来の技術】従来より位相制御駆動リニアモータ、特
に、三相同期駆動のリニアモータは、図７に示すように
断面コ字状のサイドヨーク１０を備え、サイドヨークの
上片１２，下片１４の内面に、対向する磁石の極性が異
なるようにかつ、それぞれ長手方向に隣接する磁石の極
性が異なるようにＮ極，Ｓ極，Ｎ極，・・・・Ｓ極の配
列で永久磁石５１，５２が設けられており、磁気回路が
構成されている。この磁気回路内には、可動コイル３０
が設けられており、可動コイル３０に、所定の方向に電
流を印加することにより、図中Ａ方向に可動する構成と
なっている。2. Description of the Related Art Conventionally, a phase control drive linear motor, particularly a three-phase synchronous drive linear motor, has a side yoke 10 having a U-shaped cross section as shown in FIG. The permanent magnets 51 are arranged on the inner surface of the permanent magnets 51 in an arrangement of N poles, S poles, N poles,... S poles such that the magnets facing each other have different polarities and the magnets adjacent in the longitudinal direction have different polarities. , 52 are provided to form a magnetic circuit. The moving coil 30 is provided in this magnetic circuit.
The movable coil 30 is configured to be movable in the direction A in the figure by applying a current to the movable coil 30 in a predetermined direction.
【０００３】この可動コイル３０は、図９、図１０、図
１１に示すように、補強板３２を挟んでそれ自身の上下
面に、扁平形状のコイル部材３２Ａ，３２Ｂ，３２Ｃを
設けた構成で、これらを各々所定間隔Ｋ１を空けて並列
に配した構成となっている。また、三相交流で駆動する
ため、各相をＵ相、Ｗ相，Ｖ相とすれば、コイル３２Ａ
の３２Ａ１が［＋Ｕ］，３２Ａ２が［−Ｕ］，３２Ｂの
３２Ｂ１が［＋Ｗ］，３２Ｂ２が［−Ｗ］，３２Ｃの３
２Ｃ１が［＋Ｖ］，３２Ｃ２が［−Ｖ］相に対応するよ
うに、電流が印可されるようになっている。また、この
可動コイル３０は、図８に示すように長手方向の磁気回
路の寸法Ｔがサイドヨーク１２，１４に設けられた磁石
５１，５２のＮ極，Ｓ極の単位磁石４組分の寸法Ｓと等
しくなるように構成されている。As shown in FIGS. 9, 10, and 11, the movable coil 30 has flat coil members 32A, 32B, and 32C provided on the upper and lower surfaces thereof with a reinforcing plate 32 interposed therebetween. , Are arranged in parallel at a predetermined interval K1. Further, in order to drive by three-phase AC, if each phase is U-phase, W-phase and V-phase, the coil 32A
32A1 is [+ U], 32A2 is [-U], 32B1 is [+ W], 32B2 is [−W], and 3C is 32C.
A current is applied so that 2C1 corresponds to [+ V] and 32C2 corresponds to [-V] phase. As shown in FIG. 8, the movable coil 30 has a dimension T of the magnetic circuit in the longitudinal direction corresponding to four sets of the unit magnets of the north pole and the south pole of the magnets 51 and 52 provided on the side yokes 12 and 14. It is configured to be equal to S.
【０００４】ここで、可動コイル３０の構造を、詳細に
説明する。Here, the structure of the movable coil 30 will be described in detail.
【０００５】前記可動コイル３０のコイル部材３２Ａ，
３２Ｂ，３２Ｃは、ウエッド巻きで作成されているが、
扁平形状であるためにコイルに対する鉛直方向Ｙ及び捻
れ剛性力が弱く、そのため、補強板３２を介して組み立
てられている。この補強板３２には、予めコイルを補強
板３２の上下面の所定の位置に固定するために、コイル
の中空部３２Ａ３の形状と一致する凸部４２が設けら
れ、コイルの中空部３２Ａ３を凸部４２に挿通して固定
するようになっている。また、補強板３２にはコイルを
補強板３２上に実装した場合に、全体として可動コイル
３０の水平面に凹凸が出来ないように、コイルの厚さ分
Ｄ１と等しい深さＤ２の溝部４４が設けられている。[0005] The coil member 32A of the movable coil 30,
32B and 32C are made by wet winding,
Due to the flat shape, the coil is weak in the vertical direction Y and the torsional rigidity with respect to the coil, and is therefore assembled via the reinforcing plate 32. The reinforcing plate 32 is provided with a convex portion 42 that matches the shape of the hollow portion 32A3 of the coil in order to fix the coil at a predetermined position on the upper and lower surfaces of the reinforcing plate 32 in advance. It is adapted to be inserted through the portion 42 and fixed. Further, the reinforcing plate 32 is provided with a groove portion 44 having a depth D2 equal to the thickness D1 of the coil so that when the coil is mounted on the reinforcing plate 32, unevenness is not formed on the horizontal surface of the movable coil 30 as a whole. Have been.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、前記可
動コイル３０には、下記のような不都合があった。 １．図９に示すようにコイル部材３２Ａ，３２Ｂ，３２
Ｃの各中空部３２Ａ３（水平方向の幅Ｌ１＝８mm）が磁
気回路に寄与せず、推力に寄与するのは、図中のコイル
幅Ｆの部分だけで、無駄な部分が多く磁気の利用効率が
悪い。 ２．補強板３２の非磁性体部分が大きいために、磁石５
１，５２からみた磁気抵抗が大きく磁場が弱められる不
都合が生じていた。 ３．コイルに生じるＮ×Ｉ［通称：アンペアーターン］
により、磁石５１，５２による磁場が乱れ、電流−推力
のリニアリティが悪くなり制御性が悪化し、最悪の場合
には振動が起きる事態を招く可能性があった。 ４．アンペアーターンにより、ヨーク１０内の磁気飽和
を誘起しやすくなり、磁石５１，５２による磁場が弱ま
る。また、渦電流が発生し、ヨークの温度上昇を招き、
これにより磁石５０の温度特性により磁場が弱められる
不都合が生じていた。 ５．可動コイル３０のコイル部材３２Ａ，３２Ｂ，３２
Ｃは、扁平形状であり、その厚さは２〜３ｍｍ程度のた
め、コイル部材３２Ａ，３２Ｂ，３２Ｃだけでは、磁気
回路内における鉛直方向Ｙに対する剛性力が弱く、ねじ
れを生じるため、非磁性体で構成された補強板３２が必
要であり、可動コイル３０の軽量化が難しい。 以上により、大推力でかつ、安定した正確な位置決め精
度が必要な、精密機械における読み取りヘッドを実装し
た可動コイル３０等では、可動コイル３０を大型化し、
大電流を流さなければ必要な推力を得られなかった。本
発明は、このような従来の難点を解決するためになされ
たもので、可動コイルの形状を鋭意研究し、位相制御駆
動リニアモータにおいて、磁場の利用効率が高く、しか
もヨークの発熱を押され、可動コイルを小型化でき安定
した推力を得ることが出来るリニアモータを提供するこ
とを目的とする。However, the moving coil 30 has the following disadvantages. 1. As shown in FIG. 9, the coil members 32A, 32B, 32
Each hollow portion 32A3 (horizontal width L1 = 8 mm) of C does not contribute to the magnetic circuit, and contributes to the thrust only in the portion of the coil width F in the figure. Is bad. 2. Since the nonmagnetic portion of the reinforcing plate 32 is large, the magnet 5
1,52, there is a problem that the magnetic resistance is large and the magnetic field is weakened. 3. N × I [common name: ampere-turn] generated in coil
As a result, the magnetic field generated by the magnets 51 and 52 is disturbed, the linearity of the current-thrust is deteriorated, the controllability is deteriorated, and in the worst case, there is a possibility that a vibration may occur. 4. By the ampere-turn, magnetic saturation in the yoke 10 is easily induced, and the magnetic field by the magnets 51 and 52 is weakened. Also, an eddy current is generated, which causes the temperature of the yoke to rise,
As a result, there is a disadvantage that the magnetic field is weakened by the temperature characteristics of the magnet 50. 5. Coil members 32A, 32B, 32 of movable coil 30
C has a flat shape and a thickness of about 2 to 3 mm. Therefore, only the coil members 32A, 32B, and 32C have a low rigidity in the vertical direction Y in the magnetic circuit and cause torsion. Is necessary, and it is difficult to reduce the weight of the movable coil 30. As described above, in the movable coil 30 or the like in which a reading head is mounted in a precision machine that requires a large thrust and stable accurate positioning accuracy, the movable coil 30 is increased in size,
The necessary thrust could not be obtained without passing a large current. The present invention has been made to solve such conventional difficulties, and has studied the shape of the moving coil in detail, and in the phase control drive linear motor, the utilization efficiency of the magnetic field is high and the heat of the yoke is suppressed. It is another object of the present invention to provide a linear motor capable of reducing the size of a movable coil and obtaining a stable thrust.
【０００７】[0007]
【課題を解決するための手段】このような目的を達成す
るために、本発明は、 １．断面コ字状のサイドヨーク内にセンターヨークを備
え、このセンターヨークをそれ自身の空洞部に挿通し
て、長手方向に自在に可動する可動コイルを設けたリニ
アモータであって、サイドヨークの上下片の内面には、
対向する磁石同士、同一極性の磁石を交互に設け、これ
らを長手方向に隣接する磁石の極性を異なる如く配列
し、前記可動コイルを中空コイル部材を少なくとも複数
連結した構成とした。 ２．可動コイルは、中空コイル部材を長手方向に６（６
×ｎ）［ｎは整数］組配列した場合、その長手方向の寸
法は、サイドヨークの磁石の配列に注目した場合、長手
方向に磁石（４×ｎ）［ｎは整数］組と同じになる構成
とした。 ３．可動コイルは、ウエット巻きにて構成し、隣接する
コイル部材同士を非磁性体からなる絶縁部材を介して連
結した。 ４．可動コイルには、補強板を設けた。 ５．長手方向に並ぶ磁石４ｎ（ｎは整数）個を一組とし
て、前記長手方向方向への位置角を４πに設定した場
合、前記複数個の中空コイル部材からなる可動コイルの
長手方向の長さを、前記位置角＝４πに設定した。 ６．可動コイルには、それ自身の端からの位置角に等し
い位相差の駆動電流を印可する構成とした。 ７．４個一組の磁石の長手方向の長さを位置角＝４πに
設定し、可動コイルを６個の中空コイル部材で構成し、
長手方向の長さを位置角＝４πとし、中空コイル部材に
は、可動コイルの移動方向に向かって三相交流のＵ相、
−Ｕ相，Ｗ相、−Ｗ相，Ｖ相、−Ｖ相を印可する構成と
した。 以上のような構成により課題を解決した。In order to achieve such an object, the present invention provides: A linear motor provided with a center yoke in a side yoke having a U-shaped cross section, and having a movable coil that is freely movable in a longitudinal direction by inserting the center yoke into a cavity of the linear yoke. On the inside of the piece,
Opposing magnets and magnets of the same polarity are alternately provided, and these are arranged so that the magnets adjacent in the longitudinal direction have different polarities, and the movable coil is configured by connecting at least a plurality of hollow coil members. 2. The movable coil moves the hollow coil member 6 (6
× n) [n is an integer] set, the longitudinal dimension is the same as the magnet (4 × n) [n is an integer] set in the longitudinal direction when focusing on the arrangement of the magnets of the side yokes. The configuration was adopted. 3. The movable coil was formed by wet winding, and adjacent coil members were connected to each other via an insulating member made of a non-magnetic material. 4. The movable coil was provided with a reinforcing plate. 5. When 4n (n is an integer) magnets arranged in the longitudinal direction are set as a set and the position angle in the longitudinal direction is set to 4π, the longitudinal length of the movable coil including the plurality of hollow coil members is set as , And the position angle was set to 4π. 6. The drive current having a phase difference equal to the position angle from the end of the movable coil was applied to the movable coil. 7. The longitudinal length of the set of four magnets is set at a position angle of 4π, and the movable coil is constituted by six hollow coil members.
The length in the longitudinal direction is a position angle = 4π, and the hollow coil member has a U-phase of three-phase alternating current in the moving direction of the movable coil,
-U phase, W phase, -W phase, V phase, and -V phase were applied. The problem has been solved by the above configuration.
【０００８】[0008]
【発明の実施形態】以下、本発明に係る、位相制御駆動
リニアモータ、特に、三相同期駆動リニアモータの実施
の一形態を図１乃至図４に基づいて説明する。ここで、
前述した図７乃至図１１に示した従来技術と同一の部材
には、同一の符号を付すものとする。図１において、本
実施例に係る、リニアモータは、断面略Ｅ字状のヨーク
１を備え、上片（サイドヨーク）１２，下片（サイドヨ
ーク）１３及びセンターヨーク１６を具備する構成とな
っている。サイドヨーク１２，１３の内面には、図１に
示すように、対向する磁石の磁極が同一で、かつ、それ
ぞれ長手方向に隣接する磁石の磁極が異なるように、Ｎ
極，Ｓ極，Ｎ極・・・・・・Ｓ極の配列で永久磁石５０
が設けられ、磁気回路が構成されている。この磁気回路
内には、センターヨーク１６をそれ自身の空洞部に挿通
してなる可動コイル３が設けられており、可動コイル３
を構成する各コイル部材に所定の位相の電流を印可する
ことにより、図中Ａ方向に可動する構成となっている。
可動コイル３は、具体的には、図２に示すように、接着
剤等を塗布した導線を中央部に空洞５を設けた、中空形
状に多層巻きした、通称、ウエッド巻きしたコイル部材
３Ａ１，３Ａ２，・・・・，３Ｃ２を６個を非磁性体の
絶縁部材９、例えば、ガラスエポキシ樹脂や絶縁処理
（硬質アルマイト処理）されたアルミ合金で接合して、
一体化した構成となっている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a phase control drive linear motor, in particular, a three-phase synchronous drive linear motor according to the present invention will be described below with reference to FIGS. here,
The same members as those in the prior art shown in FIGS. 7 to 11 are denoted by the same reference numerals. In FIG. 1, the linear motor according to this embodiment includes a yoke 1 having a substantially E-shaped cross section, and includes an upper piece (side yoke) 12, a lower piece (side yoke) 13, and a center yoke 16. ing. On the inner surfaces of the side yokes 12 and 13, as shown in FIG.
Pole, S pole, N pole ... Permanent magnet 50 in S pole arrangement
Are provided to form a magnetic circuit. The movable coil 3 having the center yoke 16 inserted into its own cavity is provided in the magnetic circuit.
By applying a current of a predetermined phase to each of the coil members constituting the above, the movable member is configured to be movable in the direction A in the drawing.
More specifically, as shown in FIG. 2, the movable coil 3 is formed by winding a conductive wire coated with an adhesive or the like into a hollow shape at a center portion, and is wound in a multilayer shape in a hollow shape. .., 3C2 are joined with a non-magnetic insulating member 9, for example, a glass epoxy resin or an aluminum alloy subjected to an insulating treatment (hard alumite treatment).
It has an integrated configuration.
【０００９】この可動コイル３は、図３に示すように、
位相差１２０度の三相交流で同期駆動されるように構成
するため、各相をＵ相、Ｗ相、Ｖ相とし、コイル部材３
Ａ１が［＋Ｕ］，３Ａ２が［−Ｕ］，３Ｂ１が［＋
Ｗ］，３Ｂ２が［−Ｗ］，３Ｃ１が［＋Ｖ］，３Ｃ２が
［−Ｖ］相に対応するように、電流が印可されるように
なっている。[0009] As shown in FIG.
In order to be configured to be synchronously driven by a three-phase alternating current having a phase difference of 120 degrees, each phase is set to a U phase, a W phase, and a V phase,
A1 is [+ U], 3A2 is [-U], and 3B1 is [+ U].
The current is applied so that [W], 3B2 corresponds to [-W], 3C1 corresponds to [+ V], and 3C2 corresponds to [-V] phase.
【００１０】＋Ｕ相，−Ｕ相は位相がπ（１８０度）異
なる。The phases of the + U phase and the -U phase are different by π (180 degrees).
【００１１】同様に、＋Ｗ相，−Ｗ相及び＋Ｖ相，−Ｖ
相も各々位相が１８０度異なるように電流が印可される
ようになっている。そして、可動コイル３０の長手方向
の寸法Ｔがサイドヨーク１２，１４に設けられた磁石５
０のＮ極，Ｓ極の単位磁石４組分の寸法Ｓと等しくなる
ように構成されている。Similarly, the + W phase, the -W phase, the + V phase, and the -V
The currents are applied so that the phases are different from each other by 180 degrees. The dimension T of the movable coil 30 in the longitudinal direction is determined by the magnet 5 provided on the side yokes 12 and 14.
It is configured to be equal to the dimension S of four sets of unit magnets having zero and north poles.
【００１２】ここで、本実施例の動作原理を説明する。
図５は、三相交流リニアモータの動作原理１であり、図
６は、本発明に係る三相交流リニアモータの動作原理２
を示す図面である。図３に示すように、本発明に用いら
れるリニアモ−タは、４個の永久磁石６と６個の中空コ
イル２を動作単位として構成されている。Here, the principle of operation of this embodiment will be described.
FIG. 5 shows the operating principle 1 of the three-phase AC linear motor, and FIG. 6 shows the operating principle 2 of the three-phase AC linear motor according to the present invention.
FIG. As shown in FIG. 3, the linear motor used in the present invention is configured with four permanent magnets 6 and six hollow coils 2 as operating units.
【００１３】ここでは基本原理を説明するために図５に
示すように永久磁石６を６−２〜６−５の４個、（また
は６−８〜６−１１の４個）と、一体となって移動する
３個の中空移動コイル２を動作単位としている。Here, in order to explain the basic principle, as shown in FIG. 5, four permanent magnets 6-2 to 6-5 or four permanent magnets 6 (or 6-8 to 6-11) are integrally formed. The three hollow moving coils 2 that move as a unit are used as an operation unit.
【００１４】図５に示すとおり、永久磁石６−３から出
力された磁束は、センターサイドヨーク５を経由して、
永久磁石６−２又は、永久磁石６−２及び永久磁石６−
４に入力される。また、永久磁石６−９から出力された
磁束は、センターサイドヨーク５を経由して、永久磁石
６−８又は、永久磁石６−８及び永久磁石６−１０に入
力される。As shown in FIG. 5, the magnetic flux output from the permanent magnet 6-3 passes through the center side yoke 5 and
Permanent magnet 6-2 or permanent magnet 6-2 and permanent magnet 6
4 is input. The magnetic flux output from the permanent magnet 6-9 is input to the permanent magnet 6-8 or the permanent magnet 6-8 and the permanent magnet 6-10 via the center side yoke 5.
【００１５】同様にして永久磁石６−５から出力された
磁束は、センターサイドヨーク５を経由して、永久磁石
６−４又は、永久磁石６−４及び永久磁石６−６に入力
される。また、永久磁石６−１１から出力された磁束
は、センターサイドヨーク５を経由して、永久磁石６−
１０又は、永久磁石６−１０又は、永久磁石６−１２に
入力される。Similarly, the magnetic flux output from the permanent magnet 6-5 is input to the permanent magnet 6-4 or the permanent magnet 6-4 and the permanent magnet 6-6 via the center side yoke 5. The magnetic flux output from the permanent magnet 6-11 passes through the center side yoke 5 and
10 or the permanent magnet 6-10 or the permanent magnet 6-12.
【００１６】永久磁石６−２及び永久磁石６−８の左側
を起点として位置角（磁場の位相角）を設定する。位置
角は、磁極方向に隣接する永久磁石毎にπ進むものと定
める。また、永久磁石６−２及び永久磁石６−８の左側
を起点として右方向（Ｘ軸方向）へ一体となって移動す
る３個のコイル部材（中空コイル２）の移動する距離を
ｘと定める。コイル部材３Ａ１が距離ｘだけＸ軸方向へ
移動したときに鎖交する磁束数を Ｂａ＝Ｂｍ・ｓｉｎ（ｘ）・・・（１式） コイル部材３Ｂ１が距離ｘだけＸ軸方向へ移動したとき
に鎖交する磁束数を Ｂｂ＝Ｂｍ・ｓｉｎ（ｘ−４π／３）・・・（２式） コイル部材３Ｃ１が距離ｘだけＸ軸方向へ移動したとき
に鎖交する磁束数を Ｂｃ＝Ｂｍ・ｓｉｎ（ｘ−８π／３）＝Ｂｍ・ｓｉｎ（ｘ−２π／３） ・・・（３式） とおく。ここでＢｍは永久磁石の最大磁束密度とし、各
コイル部材の位置ズレを上記位置角で表す。上記図３に
示すコイル部材に３Ａ１に三相交流の＋Ｕ相、コイル部
材３Ｂ１に＋Ｗ、コイル部材３Ｃ１に＋Ｖがそれぞれ供
給されている。したがって、コイル部材３Ａ１に流れる
電流は、 Ｉａ＝Ｉｍ・ｓｉｎ（ωｔ） ・・・（４式） コイル部材３Ａ１に流れる電流は、 Ｉｂ＝Ｉｍ・ｓｉｎ（ωｔ−４π／３）・・・（５式） コイル部材３Ａ１に流れる電流は、 Ｉｃ＝Ｉｍ・ｓｉｎ（ωｔ−２π／３）・・・（６式） となる。以上求めた（１式）から（６式）より永久磁石
６−１〜６−６の界磁磁束とコイル部材に流れる電流が
鎖交することによって３個のコイル部材（３Ａ１，３Ｂ
１，３Ｃ１に働く推力Ｆは次式で表される。 Ｆ＝Ｂａ・Ｉａ＋Ｂｂ・Ｉｂ＋Ｂｃ・Ｉｃ ＝Ｂｍ・Ｉｍ・｛ｓｉｎ（ｘ）・ｓｉｎ（ωｔ）＋ｓｉｎ（ｘ−４π／３）・ ｓｉｎ（ωｔ−４π／３）＋ｓｉｎ（ｘ−２π／３）・ ｓｉｎ（ωｔ−２π／３）｝ 同期の場合 ωｔ＝ｘであるから Ｆ＝Ｂｍ・Ｉｍ・｛ｓｉｎ2（ｘ）＋ｓｉｎ2（ｘ−４π／３）＋ｓｉｎ2 （ｘ−２π／３） ＝（３／２）・Ｂｍ・Ｉｍ−（１／２）・Ｂｍ・Ｉｍ・｛ｃｏｓ（２ｘ）＋ ｃｏｓ（２ｘ−８π／３）＋ｃｏｓ（２ｘ−４π／３）｝ ＝（３／２）・Ｂｍ・Ｉｍ−（１／２）・Ｂｍ・Ｉｍ・｛ｃｏｓ（２ｘ）＋ ｃｏｓ（２ｘ−２π／３）＋ｃｏｓ（２ｘ−４π／３）｝ ＝（３／２）・Ｂｍ・Ｉｍ・−（１／２）・Ｂm・Ｉm・｛ｃｏｓ（２ｘ）＋ ［ｃｏｓ（２ｘ）・ｃｏｓ（２π／３）＋ｓｉｎ（２ｘ）・ｓｉｎ （２π／３）］＋［ｃｏｓ（２ｘ）・ｃｏｓ（４π／３）＋ｓｉｎ（２ｘ） ・ｓｉｎ（４π／３）］｝ ＝（３／２）・Ｂｍ・Ｉｍ−（１／２）・Ｂｍ・Ｉｍ・｛ｃｏｓ（２ｘ）− （１／２）・ｃｏｓ（２ｘ）＋（√３／２）・ｓｉｎ（２ｘ）−（１／２） ・ｃｏｓ（ｘ）−（√３／２）・ｓｉｎ（２ｘ）｝ ＝（３／２）・Ｂｍ・Ｉｍ・・・（７式） 以上、永久磁石６−１〜６−６の界磁磁束と３個のコイ
ル部材３Ａ１，３Ｂ１，３Ｃ１に働く推力Ｆについて説
明した。また、３個のコイル部材３Ａ１，３Ｂ１，３Ｃ
１には、永久磁石６−７〜６−１２の界磁磁束との鎖交
によっても推力Ｆが同一方向に働くが、上述と同様の理
論なので説明を省略する。A position angle (phase angle of a magnetic field) is set starting from the left side of the permanent magnets 6-2 and 6-8. The position angle is determined to advance by π for each adjacent permanent magnet in the magnetic pole direction. In addition, the moving distance of three coil members (hollow coils 2) that move integrally (rightward in the X-axis direction) starting from the left side of the permanent magnets 6-2 and 6-8 is defined as x. . When the coil member 3A1 moves in the X-axis direction by the distance x, the number of magnetic fluxes interlinked is Ba = Bm · sin (x) (1) When the coil member 3B1 moves in the X-axis direction by the distance x Bb = Bm · sin (x−4π / 3) (Equation 2) The number of magnetic fluxes that interlink when the coil member 3C1 moves the distance x in the X-axis direction is Bc = Bm. Sin (x−8π / 3) = Bm · sin (x−2π / 3) (Equation 3) Here, Bm is the maximum magnetic flux density of the permanent magnet, and the positional deviation of each coil member is represented by the above positional angle. 3A1, + U phase of three-phase alternating current, + W is supplied to the coil member 3B1, and + V is supplied to the coil member 3C1 shown in FIG. Therefore, the current flowing through the coil member 3A1 is Ia = Im · sin (ωt) (Equation 4) The current flowing through the coil member 3A1 is Ib = Im · sin (ωt−4π / 3) (5) Equation) The current flowing through the coil member 3A1 is as follows: Ic = Im · sin (ωt−2π / 3) (Equation 6) From Equations (1) to (6) obtained above, the three magnetic field coils of the permanent magnets 6-1 to 6-6 interlink with the current flowing through the coil members to link the three coil members (3A1, 3B).
The thrust F acting on 1,3C1 is expressed by the following equation. F = Ba · Ia + Bb · Ib + Bc · Ic = Bm · Im · ｛sin (x) · sin (ωt) + sin (x−4π / 3) · sin (ωt−4π / 3) + sin (x−2π / 3) sin (ωt−2π / 3)｝ In the case of synchronization Since ωt = x, F = Bm · Im · ｛sin 2 (x) + sin 2 (x−4π / 3) + sin 2 (x−2π / 3) = ( 3/2) · Bm · Im- (1/2) · Bm · Im · {cos (2x) + cos (2x−8π / 3) + cos (2x−4π / 3)} = (3/2) · Bm Im- (1/2) BmIm {cos (2x) + cos (2x-2.pi./3) + cos (2x-4.pi./3)} = (3/2) Bm.Im- (1 / 2) · Bm · Im · ｛cos (2x) + [cos (2x) · cos (2π / 3) + sin (2x) · sin (2 / 3)] + [cos (2x) · cos (4π / 3) + sin (2x) · sin (4π / 3)]｝ = (3/2) · Bm · Im− (1/2) · Bm · Im・ ｛Cos (2x)-(１ ／) ・ cos (2x) + (√3 / 2) ・ sin (2x)-(１ ／) ・ cos (x)-(√3 / 2) ・ sin ( 2x)｝ = (3/2) · Bm · Im (Equation 7) As described above, the field magnetic flux of the permanent magnets 6-1 to 6-6 and the thrust F acting on the three coil members 3A1, 3B1, and 3C1 Was explained. Also, three coil members 3A1, 3B1, 3C
In No. 1, the thrust F acts in the same direction by the linkage with the field magnetic fluxes of the permanent magnets 6-7 to 6-12, but the description is omitted because it is the same theory as described above.
【００１７】ここで、留意すべき点は以下の通りであ
る。すなわち、４個の永久磁石６−２〜６−５に対して
３個のコイル部材３Ａ１，３Ｂ１，３Ｃ１が一組となっ
て動作する。これ以外の組み合わせでは、駆動電流の位
相角とコイル部材の位置角が一致しないので推力リップ
ルが大きくなる。次に、本発明に係る三相同期リニアモ
ータの動作原理を図６に示す基本原理２に基づいて詳細
に説明する。上述した基本原理１は、位置角にして２π
／３の長さをもつ３個のコイル部材３Ａ１，３Ｂ１，３
Ｃ１がそれぞれお互いに位置角＝４π／３の間隔をおい
て配置されていたのに対し、本実施例（基本原理２）で
は、その間隔の中に位置角にして２π／３の長さをも
つ、３個のコイル部材３Ａ２，３Ｂ２，３Ｃ２が配置さ
れている。さらに、図３に示すように、コイル部材３Ａ
１に＋Ｕ相、コイル部材３Ａ２に−Ｕ相、同様に、コイ
ル部材３Ｂ１に＋Ｗ相、コイル部材３Ｂ２に−Ｗ相、コ
イル部材３Ａ３に＋Ｖ相、コイル部材３Ｂ３に−Ｖ相の
電流が印可されるように接続されている。Here, points to be noted are as follows. That is, three coil members 3A1, 3B1, and 3C1 operate as a set with respect to the four permanent magnets 6-2 to 6-5. In other combinations, since the phase angle of the drive current does not match the position angle of the coil member, the thrust ripple increases. Next, the operation principle of the three-phase synchronous linear motor according to the present invention will be described in detail based on the basic principle 2 shown in FIG. The basic principle 1 described above has a position angle of 2π
Three coil members 3A1, 3B1, 3 having a length of / 3
Whereas C1 is arranged at an interval of 4π / 3 from each other, in the present embodiment (basic principle 2), the length of 2π / 3 is set as the position angle within the interval. And three coil members 3A2, 3B2, 3C2. Further, as shown in FIG.
1, a + U phase current is applied to the coil member 3A2, and similarly, a + W phase current is applied to the coil member 3B1, a -W phase current is applied to the coil member 3B2, a + V phase current is applied to the coil member 3A3, and a -V phase current is applied to the coil member 3B3. Connected so that
【００１８】本実施例の場合、同一コイル部材３Ａ１，
３Ａ２，・・，３Ｃ２は同一方向巻きの同一コイル部材
からなり、これらを巻き方向が同じになるように図３の
ように配列して、例えば隣接するコイル部材３Ａ１と３
Ａ２の場合には、コイル部材３Ａ１の巻きはじめの端を
ＫＳ１，巻き終わりの端をＫＥ１，同様にコイル部材３
Ａ２の巻き始めの端をＫＳ２，巻き終わりの端をＫＥ２
とすれば、コイル部材３Ａ１，３Ａ２の接続は、ＫＥ１
−ＫＥ２を接続するようになっている。回路的には、Ｋ
Ｓ１−ＫＥ１−ＫＥ２−ＫＳ２で電気回路が成立してい
る。これによって、三相交流のＵ相の場合、コイル部材
３Ａ１に＋Ｕ相、コイル部材３Ａ２に−Ｕ相を印可した
のと同様になる。以下、Ｗ相，Ｖ相も同様である。ここ
で三相交流の＋Ｕ，−Ｕ相は逆相を意味しており、位相
差π（１８０度）である。同様に＋Ｗ，−Ｗ相及び＋Ｖ
相，−Ｖ相も同様である。かかる接続を採用することに
よりコイル部材３Ａ２，３Ｂ２，３Ｃ２に印可される駆
動電流の位相は２π／３遅れる。一方、コイル部材３Ａ
２，３Ｂ２，３Ｃ２は、コイル部材３Ａ１，３Ｂ１，３
Ｃ１の後ろに接続されるので、位置角も２π／３遅れ
る。したがって，上記（７式）を満足する。その結果コ
イル部材３Ａ１，３Ｂ１，３Ｃ１に働く推力とコイル部
材３Ａ２，３Ｂ２，３Ｃ２に働く推力は同一方向とな
る。In the case of this embodiment, the same coil member 3A1,
, 3C2 are made of the same coil members wound in the same direction, and are arranged as shown in FIG. 3 so that the winding directions are the same. For example, adjacent coil members 3A1 and 3A3
In the case of A2, the winding start end of the coil member 3A1 is KS1, the winding end is KE1, and the coil member 3A1 is similarly wound.
The start end of winding of A2 is KS2 and the end of winding end is KE2
Then, the connection of the coil members 3A1 and 3A2 is KE1
-KE2 is connected. In terms of circuit, K
An electric circuit is established by S1-KE1-KE2-KS2. Thereby, in the case of the U phase of the three-phase alternating current, it is the same as applying the + U phase to the coil member 3A1 and applying the -U phase to the coil member 3A2. Hereinafter, the same applies to the W phase and the V phase. Here, the + U and -U phases of the three-phase alternating current mean opposite phases, and have a phase difference of π (180 degrees). Similarly, + W, -W phase and + V
The same applies to the phase and the -V phase. By employing such a connection, the phase of the drive current applied to the coil members 3A2, 3B2, 3C2 is delayed by 2π / 3. On the other hand, the coil member 3A
2, 3B2, 3C2 are coil members 3A1, 3B1, 3
Since it is connected after C1, the position angle is also delayed by 2π / 3. Therefore, the above (Equation 7) is satisfied. As a result, the thrust acting on the coil members 3A1, 3B1, 3C1 and the thrust acting on the coil members 3A2, 3B2, 3C2 are in the same direction.
【００１９】すなわち、本実施例のリニアモータは、上
記基本原理１で説明した３個のコイル部材３Ａ１，３Ｂ
１，３Ｃ１からなるリニアモータの可動コイルの容積を
増加させることなく、２組の可動コイルを直列接続した
のと等価となる。That is, the linear motor according to the present embodiment has the three coil members 3A1, 3B described in the basic principle 1.
This is equivalent to connecting two sets of movable coils in series without increasing the volume of the movable coils of the linear motor composed of 1,3C1.
【００２０】この構成は、課題３，４を解決するために
採用した構成で、主に、可動コイルに生じるＮ×Ｉ［通
称：アンペアーターン］により、不要な方向の磁場を抑
制し、磁気回路内の推力発生磁場の乱れを小さくすると
共に、アンペアーターンによる、ヨーク１０内に発生す
る渦電流を抑制して、ヨークの温度上昇を防ぎ、磁石５
０の温度特性により磁場の低下を防ぐ効果がある。This configuration is adopted to solve the problems 3 and 4. The magnetic circuit in an unnecessary direction is suppressed mainly by N × I (commonly called “ampere turn”) generated in the movable coil. The turbulence of the magnetic field generated in the thrust is reduced, the eddy current generated in the yoke 10 due to the ampere turn is suppressed, and the temperature of the yoke is prevented from rising.
The temperature characteristic of 0 has the effect of preventing the magnetic field from lowering.
【００２１】つまり、コイル部材３Ａ１の駆動電流Ｉｍ
ｓｉｎ（ωｔ）によって励起される磁束をＨＡ１とする
と、コイル部材３Ａ２の駆動電流は、−Ｉ・ｓｉｎ（ω
ｔ）によって励起される磁束をＨＡ２となり磁束の向き
が反転してうち消し合うことになる。同様に、コイル部
材３Ｂ１，３Ｂ２及び３Ｃ１と３Ｃ２に励起される磁束
も同様の結果となり、ヨーク内に発生する渦電流の発生
を抑制できる。That is, the driving current Im of the coil member 3A1
Assuming that the magnetic flux excited by sin (ωt) is HA1, the driving current of the coil member 3A2 is −I · sin (ω
The magnetic flux excited by t) becomes HA2, and the direction of the magnetic flux is reversed and cancels out. Similarly, the magnetic flux excited by the coil members 3B1, 3B2 and 3C1 and 3C2 has the same result, and the generation of the eddy current generated in the yoke can be suppressed.
【００２２】尚、上記の説明では、４個の永久磁石６−
２〜６−５に対して６個のコイル部材３Ａ１，３Ａ２，
３Ｂ１，３Ｂ２，３Ｃ１，３Ｃ２を一組としたが、本発
明はこれに限るものではない。In the above description, four permanent magnets 6-
Six coil members 3A1, 3A2 for 2-6-5
3B1, 3B2, 3C1, and 3C2 are set as one set, but the present invention is not limited to this.
【００２３】すなわち、上記（７式）を満足するのは、
４個の永久磁石に対して６個のコイル部材が一組となる
場合に限らない。（７式）を満足するためには、コイル
部材に印可される駆動電流の位相角と、そのコイル部材
の位置角が等しければよい。That is, the above equation (7) is satisfied.
The invention is not limited to the case where six coil members form one set for four permanent magnets. In order to satisfy Equation (7), it is only necessary that the phase angle of the drive current applied to the coil member is equal to the position angle of the coil member.
【００２４】つまり、移動方向（Ｘ方向）に並ぶ永久磁
石４n個（nは整数）を一組として、上記移動方向への位
置角４πを設定したときに、複数個のコイル部材の上記
移動方向への長さが永久磁石４Ｎ個の長さに等しければ
よい。That is, when 4n permanent magnets (n is an integer) arranged in the moving direction (X direction) are set as a set and the position angle 4π in the moving direction is set, the moving direction of a plurality of coil members in the moving direction is set. It is only necessary that the length to be equal to the length of 4N permanent magnets.
【００２５】但し、複数個のコイル部材の各々の位置角
に相当する位相角の駆動電流を各々のコイル部材に印可
する必要がある。However, it is necessary to apply a drive current having a phase angle corresponding to the position angle of each of the plurality of coil members to each of the coil members.
【００２６】尚、この場合においても、複数個のコイル
部材の数量を適宜設定することにより上記漏洩磁束を低
減させることも可能になる。ここで基本原理２の説明を
終わる。尚、各コイル部材３Ａ１，・・・・３Ｃ２は、
それぞれ同一の巻数で、同一の仕様となっている。In this case as well, the leakage magnetic flux can be reduced by appropriately setting the number of the plurality of coil members. Here, the explanation of the basic principle 2 ends. Note that each of the coil members 3A1,.
Each has the same number of turns and the same specifications.
【００２７】隣接する各コイル部材３Ａ１，３Ａ２の接
合寸法ｄは、小さい方が好ましいが、本実施例では、２
mm程度となっている。また、この可動コイル３は、多層
巻きされ接着剤などの接合部材で矩形状に固められてい
るため、従来例に比べ、鉛直方向Ｙに対する剛性力が強
く、可動コイル３の変形が皆無である。また、隣接する
各コイル部材３Ａ１，３Ａ２，・・・・，３Ｃ２には、
それぞれ逆方向の電流が印可され、かつ、非常に密に隣
接して配列されているので、コイル部材３Ａ１，３Ａ
２，・・・，３Ｃ２の各コイルのアンペアターン（Ｎ：
巻数，Ｉ：電流）により発生する磁束を相互に、打ち消
し合うことができるので、ヨーク１内に発生する［鉄
損］を限りなく［０］にすることができる。このこと
は、ヨークの磁気飽和を抑え、磁場の変化をなくし、熱
性能が向上することにつながり、磁石５０の磁束の温度
変化による磁束の変化を抑え、安定した推力を得る効果
がある。It is preferable that the joining dimension d of each of the adjacent coil members 3A1 and 3A2 is small.
mm. Further, since the movable coil 3 is wound in multiple layers and is fixed in a rectangular shape by a joining member such as an adhesive, the rigidity in the vertical direction Y is higher than in the conventional example, and the movable coil 3 is not deformed at all. . In addition, each of the adjacent coil members 3A1, 3A2,.
Since currents in opposite directions are applied and are arranged very closely adjacent to each other, the coil members 3A1, 3A
Ampere turn of each coil of N2, ..., 3C2 (N:
Since the magnetic flux generated by the number of turns (I: current) can be canceled each other, [iron loss] generated in the yoke 1 can be reduced to [0] without limit. This suppresses the magnetic saturation of the yoke, eliminates the change in the magnetic field, and improves the thermal performance. This has the effect of suppressing the change in the magnetic flux of the magnet 50 due to the temperature change of the magnetic flux and obtaining a stable thrust.
【００２８】図４は、本実施例に係る、リニアモータの
構成説明図で、３Ａは、可動コイル３に設けた部品部材
である。また、可動コイル３には補強板を取り付けても
よい。FIG. 4 is an explanatory view of the configuration of the linear motor according to the present embodiment. Reference numeral 3A denotes a component member provided on the movable coil 3. Further, a reinforcing plate may be attached to the movable coil 3.
【００２９】このようにすれば、可動コイル３の剛性が
さらに大きくなる。In this way, the rigidity of the movable coil 3 is further increased.
【００３０】尚、本発明はこれに限らず、可動コイル３
のコイル部材３Ａ１〜３Ａ６と磁石５０の関係を、長手
方向に６（６×ｎ）［ｎは整数］組配列し、その長手方
向の寸法は、サイドヨークの磁石の配列に注目した場
合、長手方向に磁石（４×ｎ）［ｎは整数］組と同じに
なる構成とすれば、可動コイル３を水平方向にｎ組連結
して駆動することも出来る。このような構成にすれば、
より大きな推力を容易に得ることが出来る。The present invention is not limited to this.
The relationship between the coil members 3A1 to 3A6 and the magnet 50 is arranged in a set of 6 (6 × n) [n is an integer] pairs in the longitudinal direction. If the configuration is the same as the magnet (4 × n) [n is an integer] set in the direction, the movable coil 3 can be driven by connecting n sets in the horizontal direction. With such a configuration,
A larger thrust can be easily obtained.
【００３１】尚、本実施例では６個のコイル部材３Ａ
１，３Ａ２，・・，３Ｃ２は同一方向巻きとして、＋
Ｕ，−Ｕ，＋Ｗ，−Ｗ，＋Ｖ，−Ｖ相を印可したが、隣
接するコイル部材３Ａ１，３Ａ２，・・，３Ｃ２の巻き
方向を相互に逆巻きにして配列すれば、＋Ｕ，＋Ｖ，＋
Ｗ，＋Ｕ，＋Ｖ，＋Ｗ相を印可しても駆動できる。但し
この場合には、隣接するコイル部材３Ａ１，３Ａ２，・
・，３Ｃ２からの漏洩磁束をうち消す効果はない。In this embodiment, six coil members 3A are used.
1, 3A2, ..., 3C2 are wound in the same direction, and +
Although the U, -U, + W, -W, + V, and -V phases were applied, if the winding directions of the adjacent coil members 3A1, 3A2,.
Driving is possible even when the W, + U, + V, and + W phases are applied. However, in this case, the adjacent coil members 3A1, 3A2,.
・ There is no effect of canceling out the leakage magnetic flux from 3C2.
【００３２】[0032]
【発明の効果】本発明は、以上のように構成されている
ので、位相制御駆動リニアモータにおいて、磁場の利用
効率が高く、しかもヨークの発熱を押され、可動コイル
を小型化でき安定した推力を得ることが出来るリニアモ
ータを提供できる。Since the present invention is constructed as described above, the phase control drive linear motor has a high magnetic field utilization efficiency, is pressed by the heat of the yoke, and can reduce the size of the movable coil and achieve a stable thrust. Can be provided.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の位相制御駆動リニアモータ概要を示す
説明図。FIG. 1 is an explanatory diagram showing an outline of a phase control drive linear motor of the present invention.
【図２】本発明の可動コイルの構成説明図。FIG. 2 is a diagram illustrating the configuration of a movable coil according to the present invention.
【図３】本発明の磁気回路の説明図。FIG. 3 is an explanatory diagram of a magnetic circuit according to the present invention.
【図４】本発明のヨークと可動コイルの関係を示す説明
図。FIG. 4 is an explanatory diagram showing a relationship between a yoke and a movable coil according to the present invention.
【図５】本発明にかかるリニアモータの基本動作原理１
を示す説明図。FIG. 5 shows the basic operating principle 1 of the linear motor according to the present invention.
FIG.
【図６】本発明にかかるリニアモータの基本動作原理２
を示す説明図。FIG. 6 shows a basic operation principle 2 of the linear motor according to the present invention.
FIG.
【図７】従来の位相制御駆動リニアモータ概要を示す説
明図。FIG. 7 is an explanatory view showing an outline of a conventional phase control drive linear motor.
【図８】従来の磁気回路の説明図。FIG. 8 is an explanatory diagram of a conventional magnetic circuit.
【図９】従来の可動コイルの平面説明図。FIG. 9 is an explanatory plan view of a conventional movable coil.
【図１０】従来のヨークと可動コイルの関係を示す説明
図。FIG. 10 is an explanatory view showing a relationship between a conventional yoke and a movable coil.
【図１１】従来の可動コイルの構成を示す組立説明図。 １・・・・・・・ ヨーク ３・・・・・・・ 可動コイル ５・・・・・・・ 空洞 １２，１４・・・ サイドヨーク １６・・・・・・ センターヨーク ３Ａ１，３Ａ２，３Ｂ１，３Ｂ２，３Ｃ１，３Ｃ２・・
コイル部材（中空コイル部材） ５０・・・・・・ 永久磁石FIG. 11 is an assembly explanatory view showing a configuration of a conventional movable coil. 1 ... Yoke 3 ... Movable coil 5 ... Cavity 12,14 ... Side yoke 16 ... Center yoke 3A1,3A2,3B1 , 3B2,3C1,3C2 ...
Coil member (hollow coil member) 50 Permanent magnet
フロントページの続き (72)発明者 成吉 郁馬 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (72)発明者 赤間 助広 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (72)発明者 横山 照晃 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (72)発明者 村上 昇 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 Ｆターム(参考） 5H633 BB02 GG03 GG04 GG06 GG07 GG13 HH02 HH05 HH09 HH13 HH16 HH24 HH25 5H641 BB10 GG03 GG04 GG12 HH02 HH14 JA05 JA07 JA09 Continued on the front page (72) Inventor Ikuma Nariyoshi 2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture Inside Showa Electric Wire & Cable Co., Ltd. (72) Inventor Sukehiro Akama 2-1-1 Oda Ei, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture No. 1 Inside Showa Electric Wire & Cable Co., Ltd. (72) Inventor Teruaki Yokoyama 2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture Inside Showa Electric Wire & Cable Co., Ltd. (72) Inventor Noboru Murakami Sakae Oda, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture 2-1-1, Showa Electric Wire & Cable Co., Ltd. F-term (reference) 5H633 BB02 GG03 GG04 GG06 GG07 GG13 HH02 HH05 HH09 HH13 HH16 HH24 HH25 5H641 BB10 GG03 GG04 GG12 HH02 HH14 JA05 JA07 JA09
Claims (7)
ークを備え、このセンターヨークをそれ自身の空洞部に
挿通して、長手方向に自在に可動する可動コイルを設け
たリニアモータであって、 サイドヨークの上下片の内面には、対向する磁石同士、
同一の極性の磁石を交互に設け、これらを長手方向に隣
接する磁石の極性を異なる如く配列し、前記可動コイル
は、中空コイル部材を少なくとも複数連結した構成とし
たことを特徴とするリニアモータ。1. A linear motor comprising a center yoke in a side yoke having a U-shaped cross section, and a movable coil which is freely movable in a longitudinal direction by inserting the center yoke into its own cavity. On the inner surface of the upper and lower pieces of the side yoke, facing magnets,
A linear motor, wherein magnets having the same polarity are alternately provided, and these magnets are arranged so that the magnets adjacent to each other in the longitudinal direction have different polarities, and the movable coil is configured by connecting at least a plurality of hollow coil members.
コイル部材を長手方向に（６×ｎ）［ｎは整数］組配列
した場合、その長手方向の寸法は、サイドヨークの磁石
の配列に注目した時、長手方向に磁石（４×ｎ）［ｎは
整数］組と同じになる構成とされていることを特徴とす
る請求項１記載のリニアモータ。2. The length of the movable coil in the longitudinal direction is such that when (6 × n) [n is an integer] pairs of hollow coil members are arranged in the longitudinal direction, the dimension in the longitudinal direction is equal to that of the magnet of the side yoke. 2. The linear motor according to claim 1, wherein, when attention is paid to the arrangement, the configuration is the same as the set of magnets (4 × n) [n is an integer] in the longitudinal direction.
し、隣接するコイル部材同士を非磁性体からなる絶縁部
材を介して連結したことを特徴とする請求項１または２
の何れか一項記載のリニアモータ。3. The moving coil according to claim 1, wherein the movable coil is formed by wet winding, and adjacent coil members are connected via an insulating member made of a non-magnetic material.
A linear motor according to any one of the preceding claims.
を特徴とする請求項１，２乃至３の何れか一項記載のリ
ニアモータ。4. The linear motor according to claim 1, wherein a reinforcing plate is provided on the movable coil.
個を一組として、前記長手方向への位置角を４πに設定
した場合、前記複数個の中空コイル部材からなる可動コ
イルの長手方向の長さが、前記位置角＝４πに設定され
ていることを特徴とする請求項１乃至請求項４の何れか
一項に記載のリニアモータ。5. A magnet 4n (n is an integer) arranged in the longitudinal direction.
When the position angle in the longitudinal direction is set to 4π as one set, the length in the longitudinal direction of the movable coil including the plurality of hollow coil members is set to the position angle = 4π. The linear motor according to any one of claims 1 to 4, wherein:
動コイルには、それ自身の端からの位置角に等しい位相
差の駆動電流が印加されることを特徴とするリニアモー
タ。6. A linear motor according to claim 5, wherein a drive current having a phase difference equal to a position angle from an end of the movable coil is applied to the movable coil.
手方向に４個一組の磁石の長さを位置角＝４πに設定
し、可動コイルを６個の中空コイル部材で構成し、長手
方向の長さを位置角＝４πとし、前記中空コイル部材に
は、可動コイルの移動方向に向かって三相交流のＵ相、
−Ｕ相，Ｗ相、−Ｗ相，Ｖ相、−Ｖ相が印可されている
ことを特徴とするリニアモータ。7. A linear motor according to claim 6, wherein the length of a set of four magnets in the longitudinal direction is set at a position angle = 4π, and the movable coil is constituted by six hollow coil members. The position angle = 4π, and the hollow coil member has a U-phase of three-phase alternating current in the moving direction of the movable coil,
A linear motor to which -U, W, -W, V, and -V phases are applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001049625A JP5005131B2 (en) | 2000-12-05 | 2001-02-26 | Linear motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000369748 | 2000-12-05 | ||
| JP2000-369748 | 2000-12-05 | ||
| JP2000369748 | 2000-12-05 | ||
| JP2001049625A JP5005131B2 (en) | 2000-12-05 | 2001-02-26 | Linear motor |
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| Publication Number | Publication Date |
|---|---|
| JP2002238240A true JP2002238240A (en) | 2002-08-23 |
| JP5005131B2 JP5005131B2 (en) | 2012-08-22 |
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ID=26605252
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001049625A Expired - Lifetime JP5005131B2 (en) | 2000-12-05 | 2001-02-26 | Linear motor |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002374096A (en) * | 2001-06-14 | 2002-12-26 | Showa Electric Wire & Cable Co Ltd | Electronic component mounting apparatus |
| WO2005057763A1 (en) * | 2003-12-09 | 2005-06-23 | Toshiba Kikai Kabushiki Kaisha | Coreless linear motor |
| JP2005176464A (en) * | 2003-12-09 | 2005-06-30 | Toshiba Mach Co Ltd | Linear motor |
| JP2005176465A (en) * | 2003-12-09 | 2005-06-30 | Toshiba Mach Co Ltd | Linear motor |
| JP2005192322A (en) * | 2003-12-25 | 2005-07-14 | Toshiba Mach Co Ltd | Linear synchronous motor |
| JP2005237078A (en) * | 2004-02-18 | 2005-09-02 | Toshiba Mach Co Ltd | Linear synchronous motor |
| JP2005237081A (en) * | 2004-02-18 | 2005-09-02 | Toshiba Mach Co Ltd | Linear synchronous motor |
| JP2005237079A (en) * | 2004-02-18 | 2005-09-02 | Toshiba Mach Co Ltd | Linear synchronous motor |
| JP2012147517A (en) * | 2011-01-07 | 2012-08-02 | Toshiba Mach Co Ltd | Linear motor device and linear motor |
| KR101784460B1 (en) * | 2015-11-06 | 2017-10-11 | 한국기계연구원 | Stack type linear synchronous motor |
| WO2024046445A1 (en) * | 2022-08-31 | 2024-03-07 | Tethr Limited | Improved linear actuator |
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| JP4610125B2 (en) * | 2001-06-14 | 2011-01-12 | Ｊｕｋｉ株式会社 | Electronic component mounting device |
| JP2002374096A (en) * | 2001-06-14 | 2002-12-26 | Showa Electric Wire & Cable Co Ltd | Electronic component mounting apparatus |
| JP4721211B2 (en) * | 2003-12-09 | 2011-07-13 | 東芝機械株式会社 | Coreless linear motor |
| JP2005176464A (en) * | 2003-12-09 | 2005-06-30 | Toshiba Mach Co Ltd | Linear motor |
| DE112004002360B4 (en) * | 2003-12-09 | 2017-12-14 | Toshiba Kikai K.K. | Coreless linear motor |
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| WO2005057763A1 (en) * | 2003-12-09 | 2005-06-23 | Toshiba Kikai Kabushiki Kaisha | Coreless linear motor |
| JP2005192322A (en) * | 2003-12-25 | 2005-07-14 | Toshiba Mach Co Ltd | Linear synchronous motor |
| JP2005237081A (en) * | 2004-02-18 | 2005-09-02 | Toshiba Mach Co Ltd | Linear synchronous motor |
| JP4563046B2 (en) * | 2004-02-18 | 2010-10-13 | 東芝機械株式会社 | Linear synchronous motor |
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| JP2005237079A (en) * | 2004-02-18 | 2005-09-02 | Toshiba Mach Co Ltd | Linear synchronous motor |
| JP2005237078A (en) * | 2004-02-18 | 2005-09-02 | Toshiba Mach Co Ltd | Linear synchronous motor |
| JP2012147517A (en) * | 2011-01-07 | 2012-08-02 | Toshiba Mach Co Ltd | Linear motor device and linear motor |
| KR101784460B1 (en) * | 2015-11-06 | 2017-10-11 | 한국기계연구원 | Stack type linear synchronous motor |
| WO2024046445A1 (en) * | 2022-08-31 | 2024-03-07 | Tethr Limited | Improved linear actuator |
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