JPH10225084A - Voice-coil type linear motor - Google Patents
Voice-coil type linear motorInfo
- Publication number
- JPH10225084A JPH10225084A JP3834497A JP3834497A JPH10225084A JP H10225084 A JPH10225084 A JP H10225084A JP 3834497 A JP3834497 A JP 3834497A JP 3834497 A JP3834497 A JP 3834497A JP H10225084 A JPH10225084 A JP H10225084A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnets
- permanent magnet
- linear motor
- outer member
- pole piece
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、組立易いボイスコ
イル形リニアモータに関するものである。The present invention relates to a voice coil type linear motor which is easy to assemble.
【０００２】[0002]
【従来技術】従来のボイスコイル形リニアモータは、図
５に示すように構成してある。図において、５０、５１
は強磁性体からなる外側ヨーク、５２は前記外側ヨーク
５０、５１に空隙を介して対向させた強磁性体からなる
センタヨーク、５３、５４は前記外側ヨーク５０、５１
とセンタヨーク５２の両端相互間を連結する強磁性体か
らなるサイドヨークで、前記外側ヨーク５０、５１とセ
ンタヨーク５２およびサイドヨーク５３、５４により磁
路を形成している。５５、５６、５７、５８は永久磁石
で、前記外側ヨーク５０の内側に取付けた永久磁石５５
と外側ヨーク５１の内側に取付けた永久磁石５７は、そ
れぞれ外側ヨーク５０、５１と対向する面を同極性にし
て、例えば図５ではＮ極にして配置してある。また、前
記外側ヨーク５０の内側に取付けた永久磁石５６と外側
ヨーク５１の内側に取付けた永久磁石５８は、それぞれ
外側ヨーク５０、５１と対向する面を同極性にして、例
えば図５ではＳ極にして配置し、さらに、隣の永久磁石
５５、５７とは異極性になるように配置している。な
お、前記永久磁石５５と永久磁石５６は軸方向に所定ピ
ッチ離して取付け、永久磁石５７と永久磁石５８は軸方
向に所定ピッチ離して取付けている。５９、６０、６
１、６２は永久磁石で、前記永久磁石５５、５６、５
７、５８に対向する面を異極性にして前記永久磁石５
５、５６、５７、５８に径方向の空隙を介して前記セン
タヨーク５２に取付けてある。６３は電機子で、非磁性
のボビン６４にコイル６５を巻回してある。前記ボビン
６４の片側もしくは両側の側面にはスラスト板（図示せ
ず）が設けられいる。つぎに、このようなボイスコイル
形リニアモータの組立作業について説明をする。サイド
ヨーク５３に外側ヨーク５０、５１およびセンタヨーク
５２を取付ける。前記外側ヨーク５０、５１に永久磁石
５５、５６、５７、５８を取付ける。前記センタヨーク
５２に永久磁石５９、６０、６１、６２を外側ヨーク５
０、５１に取付けた永久磁石５５、５６、５７、５８に
対向するものは異極性に、隣のものは異極性になるよう
に軸方向に所定ピッチで配置する。前記永久磁石５５、
５６、５７、５８と永久磁石５９、６０、６１、６２の
間に電機子６３を挿入し、サイドヨーク５４を前記外側
ヨーク５０、５１およびセンタヨーク５２の端面に固定
する。つぎに、ボイスコイル形リニアモータのの動作に
ついて説明をする。ボイスコイル形リニアモータの磁束
はΦＡで示す磁路を通り、この状態で電機子６３のコイ
ル６５を励磁すると、電機子６３が軸線方向に移動す
る。2. Description of the Related Art A conventional voice coil type linear motor is constructed as shown in FIG. In the figure, 50, 51
Is an outer yoke made of a ferromagnetic material, 52 is a center yoke made of a ferromagnetic material opposed to the outer yokes 50 and 51 via a gap, and 53 and 54 are the outer yokes 50 and 51.
A magnetic path is formed by the outer yokes 50 and 51, the center yoke 52, and the side yokes 53 and 54. 55, 56, 57, and 58 are permanent magnets, and permanent magnets 55 mounted inside the outer yoke 50.
The permanent magnet 57 attached to the inside of the outer yoke 51 has the same polarity as that of the surface facing the outer yokes 50 and 51, for example, the N pole in FIG. In addition, the permanent magnet 56 attached to the inside of the outer yoke 50 and the permanent magnet 58 attached to the inside of the outer yoke 51 have surfaces opposite to the outer yokes 50 and 51, respectively, having the same polarity. And are arranged so as to have different polarities from the adjacent permanent magnets 55 and 57. The permanent magnet 55 and the permanent magnet 56 are mounted at a predetermined pitch in the axial direction, and the permanent magnet 57 and the permanent magnet 58 are mounted at a predetermined pitch in the axial direction. 59, 60, 6
Reference numerals 1 and 62 denote permanent magnets.
The surfaces facing the first and second permanent magnets 5 and 7 have different polarities.
5, 56, 57 and 58 are attached to the center yoke 52 via radial gaps. An armature 63 has a coil 65 wound around a non-magnetic bobbin 64. A thrust plate (not shown) is provided on one or both side surfaces of the bobbin 64. Next, an operation of assembling such a voice coil type linear motor will be described. The outer yokes 50 and 51 and the center yoke 52 are mounted on the side yokes 53. The permanent magnets 55, 56, 57, 58 are mounted on the outer yokes 50, 51. The center yoke 52 is provided with permanent magnets 59, 60, 61, 62 on the outer yoke 5
Those facing the permanent magnets 55, 56, 57, 58 attached to 0, 51 are arranged at a predetermined pitch in the axial direction so as to have different polarities, and the adjacent magnets have different polarities. The permanent magnet 55,
An armature 63 is inserted between 56, 57, 58 and the permanent magnets 59, 60, 61, 62, and the side yokes 54 are fixed to the end faces of the outer yokes 50, 51 and the center yoke 52. Next, the operation of the voice coil type linear motor will be described. The magnetic flux of the voice coil type linear motor passes through a magnetic path indicated by ΦA. When the coil 65 of the armature 63 is excited in this state, the armature 63 moves in the axial direction.
【０００３】[0003]
【発明が解決しようとする課題】ところが、従来のボイ
スコイル形リニアモータは、外側ヨーク５０、５１、セ
ンタヨーク５２およびサイドヨーク５３、５４が強磁性
体で構成され、この外側ヨーク５０、５１あるいはセン
タヨーク５２に永久磁石５５、５６、５７、５８、５
９、６０、６１、６２を固定しているため、強力な吸引
力が外側ヨーク５０、５１あるいはセンタヨーク５２と
永久磁石５５、５６、５７、５８、５９、６０、６１、
６６との間に働き、組立作業の障害となっていた。そこ
で、本発明は、永久磁石の磁束が外側ヨークあるいはセ
ンタヨークを通らないようにして永久磁石の取付けを簡
単にすることを目的とする。However, in the conventional voice coil type linear motor, the outer yokes 50 and 51, the center yoke 52 and the side yokes 53 and 54 are made of a ferromagnetic material. Permanent magnets 55, 56, 57, 58, 5
9, 60, 61, 62 are fixed, so that a strong attractive force is applied to the outer yokes 50, 51 or the center yoke 52 and the permanent magnets 55, 56, 57, 58, 59, 60, 61,
66, which hindered the assembly work. Therefore, an object of the present invention is to simplify the mounting of the permanent magnet by preventing the magnetic flux of the permanent magnet from passing through the outer yoke or the center yoke.
【０００４】[0004]
【課題を解決するための手段】上記問題点を解決するた
めに、本発明は、外側部材の両端相互間を連結する側板
を設け、前記外側部材の対向する面に永久磁石を設け、
前記永久磁石の内側に空隙を介し、非磁性体よりなるボ
ビンにコイルを巻装した電機子を、軸方向に移動自在に
設けたボイスコイル形リニアモータにおいて、非磁性材
からなる外側部材および側板と、前記外側部材の内面に
前記外側部材の長手方向に着磁し隣同志を同極性にして
配置した永久磁石と、前記永久磁石の側面に配置し外側
部材の内面に取付けた磁性材からなるポールピースと、
前記永久磁石に空隙を介し、前記永久磁石の着磁方向と
逆向きに着磁した永久磁石とこの永久磁石の側面に配置
した磁性材からなるポールピースからなり前記側板間に
配置したセンター部材と、前記外側部材の内側に取付け
た永久磁石およびポールピースと、前記側板間に設けた
永久磁石とポールピースよりなるセンター部材との間に
空隙を介して設けた電機子とを設けている。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a side plate connecting both ends of an outer member, and a permanent magnet on an opposing surface of the outer member.
In a voice coil type linear motor in which an armature in which a coil is wound around a bobbin made of a non-magnetic material through an air gap inside the permanent magnet is provided so as to be movable in the axial direction, an outer member and a side plate made of a non-magnetic material are provided. A permanent magnet that is magnetized in the longitudinal direction of the outer member on the inner surface of the outer member and has the same polarity as the adjacent members, and a magnetic material disposed on the side surface of the permanent magnet and attached to the inner surface of the outer member. Pole piece,
A center member disposed between the side plates, comprising a permanent magnet magnetized in a direction opposite to the magnetization direction of the permanent magnet and a pole piece made of a magnetic material arranged on a side surface of the permanent magnet, with a gap formed in the permanent magnet; A permanent magnet and a pole piece attached to the inside of the outer member, and an armature provided with an air gap between the permanent magnet provided between the side plates and a center member made of the pole piece.
【０００５】[0005]
【発明の実施の形態】以下、本発明を図に示す実施例に
基づいて説明する。図１は本発明の実施例を示すボイス
コイル形のリニアモータの斜視図、図２はボイスコイル
形のリニアモータの側断面図である。図において、１、
２は非磁性材からなる外側部材、３、４は非磁性材から
なる側板で、前記外側部材１、２と側板３、４によりロ
字状に構成してある。５、６、７、８は永久磁石で、前
記永久磁石５、６は、前記外側部材１の長手方向に着磁
し外側部材１の内側に隣同志の磁極面が同極となるよう
に固定し、前記永久磁石７、８は、前記外側部材２の長
手方向に着磁し外側部材２の内側に隣同志の磁極面が同
極となるように固定してある。９、１０、１１、１２、
１３、１４は磁性材からなるポールピースで、ポールピ
ース９、１２は永久磁石５、７の右側に配置し前記外側
部材１、２の内側に固定してある。ポールピース１０、
１３は永久磁石５と６との間あるいは永久磁石７と８と
の間に配置し前記外側部材１、２の内側に固定してあ
る。ポールピース１１、１４は永久磁石６、８の左側に
配置し外側部材１、２の内側に固定してある。４４はセ
ンター部材で、前記外側部材１と外側部材２との間にあ
って、隣同志の磁極面が同極となり、外側部材１、２に
固定した永久磁石５、６、７、８の磁極の向きに対し反
対にした永久磁石１５、１６と、この永久磁石１５、１
６の側面および永久磁石１５、１６の間に配置したポー
ルピース１７、１８、１９よりなり、前記側板３、４間
に配置してある。２０は電機子で、この電機子２０にコ
イル２１、２２が設けてある。前記コイル２１、２２
は、前記永久磁石５、６あるいは７、８と同一のピッチ
で配置し、コイル２１、２２の巻き方向は前記電機子１
８の推力が同一方向になるように巻いてある。つぎに、
このようなボイスコイル形リニアモータの組立作業につ
いて説明をする。外側部材１、２の端面に側板４を固定
する。前記外側部材１、２の内側に永久磁石５、６、
７、８を取付ける。前記側板４にポールピース１７、永
久磁石１５、ポールピース１８、永久磁石１６、ポール
ピース１９よりなるセンター部材４４を取付ける。前記
外側部材１、２に取付けた永久磁石５、６、７、８とセ
ンター部材４４との間に電機子２０を入れ込んで側板３
を外側部材１、２に固定して構成する。つぎに、前記ボ
イスコイル形リニアモータの動作について説明をする。
図２における永久磁石５からの磁束Φ１は、永久磁石５
からポールピース９、電機子２０を経てポールピース１
７、永久磁石１５、ポールピース１８より電機子２０を
通ってポールピース１０から永久磁石５にいたる磁路に
流れる。永久磁石６からの磁束Φ２は、永久磁石６から
ポールピース１１、電機子２０を経てポールピース１
９、永久磁石１６、ポールピース１８より電機子２０を
通ってポールピース１０から永久磁石６にいたる磁路に
流れる。永久磁石７からの磁束Φ３は、永久磁石７から
ポールピース１２、電機子２０を経てポールピース１
７、永久磁石１５、ポールピース１８より電機子２０を
通ってポールピース１３から永久磁石７にいたる磁路に
流れる。永久磁石８からの磁束Φ４は、永久磁石８から
ポールピース１４、電機子２０を経てポールピース１
９、永久磁石１６、ポールピース１８より電機子２０を
通ってポールピース１３から永久磁石８にいたる磁路に
流れる。この状態からコイル２１、２２を励磁すると、
電磁作用により電機子２０を軸線方向に作動する。この
ように本発明のボイスコイル形リニアモータは、永久磁
石５、６、７、８からの磁束が永久磁石５、６、７、８
の側面に設けたポールピース９、１０、１１、１２、１
３を通る磁路に流れ、非磁性材の外側部材１、２および
側板３、４に磁束が流れない。したがって、永久磁石
５、６、７、８と外側部材１、２あるいは側板３、４と
の間に磁気吸引力が働かないので外側部材１、２に永久
磁石５、６、７、８を簡単に取付けることができる。図
３は、本発明の第２の実施例を示す側断面図で、ポール
ピース２３、２４、２５、２６、２７、２８、２９、３
０、３１をコイル２１、２２に対向する面の断面積を狭
くしている。このように構成することによりコイル２
１、２２からの磁束をポールピース２３、２４、２５、
２６、２７、２８、２９、３０、３１の中央に集中さ
せ、ポールピース２３、２４、２５、２６、２７、２
８、２９、３０、３１の端部の漏洩磁束を低減させるこ
とができるので、電機子の推力を向上することができ
る。図４は、本発明の第３の実施例を示す側断面図で、
ポールピース３２、３３、３４、３５、３６、３７、３
８、３９、４０、４１、４２、４３の断面積を永久磁石
に近い側を狭く、永久磁石から遠ざかるにしたがって広
くしている。このように構成することにより、ポールピ
ースとコイルとのギャップの磁束密度が均一となるの
で、電機子の推力方向の推力変化を低減することができ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. FIG. 1 is a perspective view of a voice coil type linear motor showing an embodiment of the present invention, and FIG. 2 is a side sectional view of the voice coil type linear motor. In the figure, 1,
Reference numeral 2 denotes an outer member made of a non-magnetic material, and reference numerals 3 and 4 denote side plates made of a non-magnetic material. 5, 6, 7, and 8 are permanent magnets. The permanent magnets 5 and 6 are magnetized in the longitudinal direction of the outer member 1 and fixed inside the outer member 1 so that adjacent magnetic pole surfaces have the same polarity. The permanent magnets 7 and 8 are magnetized in the longitudinal direction of the outer member 2 and are fixed inside the outer member 2 so that adjacent magnetic pole surfaces have the same polarity. 9, 10, 11, 12,
Reference numerals 13 and 14 denote pole pieces made of a magnetic material. The pole pieces 9 and 12 are arranged on the right side of the permanent magnets 5 and 7 and are fixed inside the outer members 1 and 2. Pole piece 10,
Reference numeral 13 is disposed between the permanent magnets 5 and 6 or between the permanent magnets 7 and 8, and is fixed inside the outer members 1 and 2. The pole pieces 11 and 14 are arranged on the left side of the permanent magnets 6 and 8 and are fixed inside the outer members 1 and 2. Reference numeral 44 denotes a center member, which is located between the outer member 1 and the outer member 2 and whose adjacent magnetic pole faces have the same pole, and the orientation of the magnetic poles of the permanent magnets 5, 6, 7, 8 fixed to the outer members 1, 2. And permanent magnets 15 and 16 which are opposite to
6 and pole pieces 17, 18, 19 arranged between the permanent magnets 15, 16 and arranged between the side plates 3, 4. Reference numeral 20 denotes an armature, on which coils 21 and 22 are provided. The coils 21, 22
Are arranged at the same pitch as the permanent magnets 5, 6 or 7, 8, and the winding direction of the coils 21, 22 is
8 is wound so that the thrust is in the same direction. Next,
The operation of assembling such a voice coil type linear motor will be described. The side plate 4 is fixed to the end surfaces of the outer members 1 and 2. Permanent magnets 5, 6, inside the outer members 1, 2,
Install 7 and 8. A center member 44 comprising a pole piece 17, a permanent magnet 15, a pole piece 18, a permanent magnet 16, and a pole piece 19 is mounted on the side plate 4. The armature 20 is inserted between the permanent magnets 5, 6, 7, 8 attached to the outer members 1, 2 and the center member 44, and the side plate 3
Are fixed to the outer members 1 and 2. Next, the operation of the voice coil type linear motor will be described.
The magnetic flux Φ1 from the permanent magnet 5 in FIG.
From the pole piece 9 via the armature 20
7, the permanent magnet 15 and the pole piece 18 flow through the armature 20 to the magnetic path from the pole piece 10 to the permanent magnet 5. The magnetic flux Φ2 from the permanent magnet 6 is transmitted from the permanent magnet 6 through the pole piece 11 and the armature 20 to the pole piece 1
The magnetic flux flows from the pole piece 10 to the permanent magnet 6 through the armature 20 from the 9, the permanent magnet 16 and the pole piece 18. The magnetic flux Φ3 from the permanent magnet 7 is transferred from the permanent magnet 7 through the pole piece 12 and the armature 20 to the pole piece 1
7, the permanent magnet 15, and the pole piece 18 flow through the armature 20 to the magnetic path from the pole piece 13 to the permanent magnet 7. The magnetic flux Φ4 from the permanent magnet 8 is transmitted from the permanent magnet 8 through the pole piece 14 and the armature 20 to the pole piece 1
The magnetic flux flows from the pole piece 13 to the permanent magnet 8 through the armature 20 from the 9, the permanent magnet 16 and the pole piece 18. When the coils 21 and 22 are excited from this state,
The armature 20 is operated in the axial direction by the electromagnetic action. As described above, in the voice coil type linear motor of the present invention, the magnetic flux from the permanent magnets 5, 6, 7, 8
Pole pieces 9, 10, 11, 12, 1 provided on the side surfaces of
The magnetic flux does not flow through the magnetic path passing through the outer member 3 and the outer members 1 and 2 and the side plates 3 and 4 made of nonmagnetic material. Therefore, since the magnetic attraction does not act between the permanent magnets 5, 6, 7, 8 and the outer members 1, 2 or the side plates 3, 4, the permanent magnets 5, 6, 7, 8 can be simplified on the outer members 1, 2. Can be mounted on FIG. 3 is a side sectional view showing a second embodiment of the present invention, wherein pole pieces 23, 24, 25, 26, 27, 28, 29, 3 are shown.
The cross-sectional areas of the surfaces 0 and 31 facing the coils 21 and 22 are reduced. With this configuration, the coil 2
The magnetic flux from the pole pieces 23, 24, 25,
26, 27, 28, 29, 30, 31 and pole pieces 23, 24, 25, 26, 27, 2
Since the leakage magnetic flux at the ends of 8, 29, 30, and 31 can be reduced, the thrust of the armature can be improved. FIG. 4 is a side sectional view showing a third embodiment of the present invention.
Pole pieces 32, 33, 34, 35, 36, 37, 3
The cross-sectional areas of 8, 39, 40, 41, 42, and 43 are narrower on the side closer to the permanent magnet and wider as the distance from the permanent magnet increases. With this configuration, the magnetic flux density in the gap between the pole piece and the coil becomes uniform, so that a change in thrust in the thrust direction of the armature can be reduced.
【０００６】[0006]
【発明の効果】以上説明したように、本発明によればつ
ぎのような効果がある。 （１） 外側部材および側板を非磁性材で構成したの
で、外側部材への永久磁石の取付けが簡単となる。 （２） ポールピースのコイルに対向する面側の断面積
を小さくしたので、永久磁石端部の漏洩磁束を低減して
電機子の推力を向上することができる。 （３） ポールピースの断面積を永久磁石に近い側を狭
く、遠ざかるにしたがって広くしたので、電機子の推力
変化を低減することができる。As described above, the present invention has the following effects. (1) Since the outer member and the side plate are made of a non-magnetic material, attachment of the permanent magnet to the outer member is simplified. (2) Since the cross-sectional area of the surface of the pole piece facing the coil is reduced, the leakage magnetic flux at the end of the permanent magnet can be reduced and the thrust of the armature can be improved. (3) Since the cross-sectional area of the pole piece is made narrower on the side closer to the permanent magnet and wider as the distance increases, the change in thrust of the armature can be reduced.
【図１】本発明の第１の実施例を示すボイスコイル形リ
ニアモータの斜視図である。FIG. 1 is a perspective view of a voice coil type linear motor according to a first embodiment of the present invention.
【図２】本発明の第１の実施例を示すボイスコイル形リ
ニアモータの側断面図である。FIG. 2 is a side sectional view of the voice coil type linear motor according to the first embodiment of the present invention.
【図３】本発明の第２の実施例を示すボイスコイル形リ
ニアモータの側断面図である。FIG. 3 is a side sectional view of a voice coil type linear motor according to a second embodiment of the present invention.
【図４】本発明の第３の実施例を示すボイスコイル形リ
ニアモータの側断面図である。FIG. 4 is a side sectional view of a voice coil type linear motor according to a third embodiment of the present invention.
【図５】従来のボイスコイル形リニアモータの側断面図
である。FIG. 5 is a side sectional view of a conventional voice coil type linear motor.
１、２ 外側部材、 ３、４ 側板、 ５、６、７、８
永久磁石、９、１０、１１、１２、１３、１４ ポー
ルピース、１５、１６ 永久磁石、 １７、１８、１９
ポールピース、２０ 電機子、 ２１、２２ コイ
ル、２３、２４、２５、２６、２７、２８、２９、３
９、３１ ポールピース、４４ センター部材1, 2 outer member, 3, 4 side plate, 5, 6, 7, 8
Permanent magnet, 9, 10, 11, 12, 13, 14 Pole piece, 15, 16 Permanent magnet, 17, 18, 19
Pole piece, 20 armature, 21, 22 coil, 23, 24, 25, 26, 27, 28, 29, 3,
9, 31 Pole piece, 44 Center member
Claims (3)
する側板（３、４）を設け、前記外側部材の対向する面
に永久磁石を取付け、前記永久磁石の内側に空隙を介
し、非磁性体よりなるボビンにコイル（２１、２２）を
巻装した電機子（２０）を、軸方向に移動自在に設けた
ボイスコイル形リニアモータにおいて、 非磁性材からなる外側部材（１、２）および側板（３、
４）と、 前記外側部材（１、２）の内面に前記外側部材（１、
２）の長手方向に着磁し隣同志を同極性にして配置した
永久磁石（５、６、７、８）と、 前記永久磁石（５、６、７、８）の側面に配置し外側部
材の内面に取付けた磁性材からなるポールピース（９、
１０、１１、１２、１３、１４）と、 前記永久磁石（５、６、７、８）に空隙を介し、前記永
久磁石（５、６、７、８）の着磁方向と逆向きに着磁し
た永久磁石（１５、１６）とこの永久磁石（１５、１
６）の側面に配置した磁性材からなるポールピース（１
７、１８、１９）よりなり側板（３、４）間に配置した
センター部材（４４）と、 前記外側部材（１、２）の内側に取付けた永久磁石
（５、６、７、８）およびポールピース（９、１０、１
１）と、前記側板（３、４）間に設けたセンター部材
（４４）との間に空隙を介して設けた電機子（２０）
と、 を有することを特徴とするボイスコイル形リニアモー
タ。A side plate (3, 4) for connecting both ends of an outer member (1, 2) is provided, and a permanent magnet is attached to an opposing surface of the outer member, and a space is provided inside the permanent magnet via a gap. In a voice coil type linear motor in which an armature (20) in which coils (21, 22) are wound around a bobbin made of a non-magnetic material is provided so as to be movable in the axial direction, an outer member (1, 2) and side plates (3,
4) and the outer member (1, 2) on the inner surface of the outer member (1, 2).
2) permanent magnets (5, 6, 7, 8) which are magnetized in the longitudinal direction and whose neighbors have the same polarity, and an outer member which is arranged on the side surface of the permanent magnets (5, 6, 7, 8) Pole piece (9,
10, 11, 12, 13, 14) and the permanent magnets (5, 6, 7, 8) with a gap therebetween in a direction opposite to the magnetization direction of the permanent magnets (5, 6, 7, 8). The magnetized permanent magnets (15, 16) and the permanent magnets (15, 1
Pole piece (1) made of a magnetic material disposed on the side of (6)
7, 18, 19) and a center member (44) disposed between the side plates (3, 4); a permanent magnet (5, 6, 7, 8) mounted inside the outer member (1, 2); Pole pieces (9, 10, 1
An armature (20) provided with an air gap between 1) and a center member (44) provided between the side plates (3, 4).
A voice coil type linear motor, comprising:
６、２７、２８、２９、３０、３１）のコイル（２１、
２２）に対向する面側の断面積を小さくした請求項１記
載のボイスコイル形リニアモータ。2. A pole piece (23, 24, 25, 2)
6, 27, 28, 29, 30, 31) coil (21,
2. The voice coil type linear motor according to claim 1, wherein a cross-sectional area on a surface side facing said 22) is reduced.
５、３６、３７、３８、３９、４０、４１、４２、４
３）の断面積を永久磁石（５、６、７、８、１５、１
６）に近い側を狭く、永久磁石から遠ざかるしたがって
広くした請求項１記載のボイスコイル形リニアモータ。3. A pole piece (32, 33, 34, 3)
5, 36, 37, 38, 39, 40, 41, 42, 4
3) The cross-sectional area of the permanent magnet (5, 6, 7, 8, 15, 1)
2. A voice coil type linear motor according to claim 1, wherein the side closer to 6) is narrower and is wider away from the permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03834497A JP3750127B2 (en) | 1997-02-05 | 1997-02-05 | Voice coil linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03834497A JP3750127B2 (en) | 1997-02-05 | 1997-02-05 | Voice coil linear motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10225084A true JPH10225084A (en) | 1998-08-21 |
| JP3750127B2 JP3750127B2 (en) | 2006-03-01 |
Family
ID=12522679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03834497A Expired - Fee Related JP3750127B2 (en) | 1997-02-05 | 1997-02-05 | Voice coil linear motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3750127B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100407897B1 (en) * | 2001-09-04 | 2003-12-06 | 한국과학기술원 | A Fine Actuator Stage Using Moving Magnet Type Of VCM |
| US6787945B2 (en) * | 2002-03-13 | 2004-09-07 | Shin-Etsu Chemical Co., Ltd. | Linear motor |
-
1997
- 1997-02-05 JP JP03834497A patent/JP3750127B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100407897B1 (en) * | 2001-09-04 | 2003-12-06 | 한국과학기술원 | A Fine Actuator Stage Using Moving Magnet Type Of VCM |
| US6787945B2 (en) * | 2002-03-13 | 2004-09-07 | Shin-Etsu Chemical Co., Ltd. | Linear motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3750127B2 (en) | 2006-03-01 |
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