JPH0139116Y2 - - Google Patents
Info
- Publication number
- JPH0139116Y2 JPH0139116Y2 JP13750884U JP13750884U JPH0139116Y2 JP H0139116 Y2 JPH0139116 Y2 JP H0139116Y2 JP 13750884 U JP13750884 U JP 13750884U JP 13750884 U JP13750884 U JP 13750884U JP H0139116 Y2 JPH0139116 Y2 JP H0139116Y2
- Authority
- JP
- Japan
- Prior art keywords
- moving
- moving coil
- coil assembly
- rail
- movable
- 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
Links
- 230000004907 flux Effects 0.000 claims description 26
- 239000004020 conductor Substances 0.000 claims description 22
- 238000004804 winding Methods 0.000 claims description 21
- 239000000696 magnetic material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Linear Motors (AREA)
Description
【考案の詳細な説明】
「産業上の利用分野」
この考案は、自動車ボデイの各種装備品を駆動
するほか任意な用途に使用可能な可動コイル型リ
ニヤモータに関する。[Detailed Description of the Invention] "Industrial Application Field" This invention relates to a moving coil type linear motor that can be used for any other purpose in addition to driving various accessories of an automobile body.
「従来の技術」
従来の可動コイル型リニヤモータは、可動コイ
ルの両側に、永久磁石を配置したものが一般的で
あり、可動コイルの両側に磁石があるので全体の
断面形状が大きくなるという問題がある。"Prior Art" Conventional moving coil type linear motors generally have permanent magnets placed on both sides of the moving coil, and because the magnets are on both sides of the moving coil, the problem is that the overall cross-sectional shape becomes large. be.
もつとも、特開昭57−113767号公報には複数の
磁石の片側上面にエアベアリングを介して可動コ
イルを支持するようにして、可動コイルの片側の
みに磁石を配置したリニヤモータが開示されてい
るが、エアベアリングを必要とするので構造が複
雑でありまた断面形状が大型であるという問題が
ある。 However, JP-A-57-113767 discloses a linear motor in which a moving coil is supported on the upper surface of one side of a plurality of magnets via an air bearing, and a magnet is arranged only on one side of the moving coil. However, since it requires an air bearing, there are problems in that the structure is complicated and the cross-sectional shape is large.
また、従来の可動コイル型リニヤモータは、可
動コイルの電流の方向を切換えるために、磁束の
極性を検出する磁気センサを可動コイルに取付
け、このセンサに導線を介して接続された電子ス
イツチング回路によつて電流方向の切換えを行つ
ているので、磁気センサおよび構成が複雑な電子
スイツチング回路を必要として高価なものになる
とともに、可動コイルに附随して移動する導線の
とり回しを必要とする不便さがある。 In addition, in conventional moving coil type linear motors, in order to switch the direction of current in the moving coil, a magnetic sensor that detects the polarity of magnetic flux is attached to the moving coil, and an electronic switching circuit is connected to this sensor via a conductive wire. Since the current direction is switched by moving the coil, it requires a magnetic sensor and an electronic switching circuit with a complicated configuration, which is expensive, and also requires the inconvenience of routing the conductor that moves along with the moving coil. be.
「考案が解決しようとする問題点」
この考案は、上記の問題に鑑みてなされたもの
であり、断面形状が小型であるとともに、磁気セ
ンサおよび電子スイツチング回路と導線の接続お
よびとり回しを必要としない可動コイル型リニヤ
モータを提供することを目的とする。``Problems that the invention attempts to solve'' This invention was created in view of the above problems, and it has a small cross-sectional shape and requires connection and routing of conductors with magnetic sensors and electronic switching circuits. The purpose of the present invention is to provide a moving coil type linear motor that does not
「問題点を解決するための手段」
しかして、この考案の可動コイル型リニヤモー
タは、非磁性材料で形成された逆U字状断面のレ
ールと、レール内面両側に対向して配置された一
対のヨークと、両ヨークのいずれか一方に、他方
のヨークと対向して隣り合うどうしは極性がそれ
ぞれ異なるように長手方向に配置され、前記他方
のヨークとの空隙に磁束を通じる複数個の永久磁
石と、前記空隙内を、レールおよび永久磁石に案
内されて磁束と直角方向に運動できる可動コイル
組立体であつて、該可動コイル組立体が複数個の
可動コイルを包含し、かつ可動コイルの巻線部の
巻線方向が磁束と直角である可動コイル組立体と
可動コイル組立体の上部に設けられ、各可動コイ
ルの巻線端と結線された集電ブラシと、前記集電
ブラシと接触可能に前記レール内上面に配置され
た正負導体を包含し、可動コイル組立体と永久磁
石との相対位置に応じて、該可動コイル組立体が
移動方向に推力を発生するように、各可動コイル
に流れる電流の向きを切換えながら各可動コイル
に給電する給電パターンとを備え、複数個の可動
コイルのうち少なくとも1個が常に駆動されるこ
とを特徴とする。``Means for Solving the Problems'' The moving coil linear motor of this invention consists of a rail with an inverted U-shaped cross section made of non-magnetic material, and a pair of rails arranged facing each other on both sides of the inner surface of the rail. a yoke, and a plurality of permanent magnets arranged in the longitudinal direction of one of the yokes so that adjacent ones facing the other yoke have different polarities, and which pass magnetic flux through the gap between the yoke and the other yoke. and a moving coil assembly capable of moving within the air gap in a direction perpendicular to the magnetic flux guided by a rail and a permanent magnet, the moving coil assembly including a plurality of moving coils and a winding of the moving coil. A moving coil assembly in which the winding direction of the wire portion is perpendicular to the magnetic flux, and a current collecting brush provided on the upper part of the moving coil assembly and connected to the winding end of each moving coil, and contactable with the current collecting brush. includes positive and negative conductors disposed on the inner upper surface of the rail, and each movable coil is configured such that the movable coil assembly generates a thrust in the moving direction depending on the relative position of the movable coil assembly and the permanent magnet. The present invention is characterized in that it includes a power supply pattern that supplies power to each movable coil while switching the direction of a flowing current, and that at least one of the plurality of movable coils is always driven.
「作用」
上記構成によれば、可動コイルは、レール内上
面に配置した給電パターンおよび可動コイル組立
体の上部に設けた集電ブラシを介して電流の向き
を切換えながら通電され、可動コイル組立体の移
動方向と磁束の方向に適した電流を各可動コイル
に切換え供給することができ、磁気センサおよび
電子スイツチング回路と導線の接続およびとり回
しを必要としないとともに、可動コイル組立体を
レールおよび永久磁石により磁束と直角方向に運
動可能に案内させているためエアベアリグが不要
となり、また永久磁石を両ヨークのいずれか一
方、つまり可動コイル組立体の片側に配置してい
るからリニヤモータの断面形状が小型となる。"Operation" According to the above configuration, the moving coil is energized while switching the direction of current through the power feeding pattern arranged on the upper surface of the rail and the current collecting brush provided on the upper part of the moving coil assembly. It is possible to switch and supply current to each moving coil that is appropriate for the direction of movement and the direction of magnetic flux, eliminating the need for connecting and routing conductors to magnetic sensors and electronic switching circuits, and allowing moving coil assemblies to be connected to rails and permanent wires. Since the magnets guide the movement in a direction perpendicular to the magnetic flux, there is no need for an air bear rig, and since the permanent magnet is placed on either one of the yokes, that is, on one side of the moving coil assembly, the cross-sectional shape of the linear motor is small. becomes.
さらに、この考案によれば、可動コイル組立体
の上部に集電ブラシを設け、また、この集電ブラ
シに通電すべくレール内上面に給電パターンを配
置しており、各可動コイルの巻線部と直角な空隙
中に集電ブラシおよび給電パターンが存在しない
ので、この空隙の幅が狭くなり、各可動コイルに
働く磁束の密度を高くすることができるため、可
動コイル組立体の推力が向上する。 Furthermore, according to this invention, a current collecting brush is provided on the upper part of the moving coil assembly, and a power feeding pattern is arranged on the upper surface of the rail to energize the current collecting brush, and the winding portion of each moving coil is Since there are no current collecting brushes or feeding patterns in the air gap perpendicular to the air gap, the width of this air gap is narrower, and the density of the magnetic flux acting on each moving coil can be increased, thereby increasing the thrust of the moving coil assembly. .
「考案の背景」
この考案に係る実用新案登録出願人は、先に実
願昭59−71491号として、上記従来技術の問題点
を解決すべく、非磁性材料で形成された逆U字状
断面のレールと、レール内面両側に対向して配置
された一対のヨークと、両ヨークのいずれか一方
に、他方のヨークと対向して隣り合うどうしは極
性がそれぞれ異なるように長手方向に配置され、
前記他方のヨークとの空隙に磁束を通じる複数個
の永久磁石と、前記空隙内を、レールおよび永久
磁石に案内されて磁束と直角方向に運動できる可
動コイル組立体であつて、該可動コイル組立体が
中心に空芯部をもつた複数個の可動コイルを包含
し、かつ可動コイルの巻線部の巻線方向が磁束と
直角である可動コイル組立体と、可動コイル組立
体における可動コイル中心の空芯部内に設けら
れ、各可動コイルの巻線端と結線された集電ブラ
シ、前記集電ブラシと接触可能に前記レール内の
前記他方のヨークの側面に配置された正負導体を
包含し、可動コイル組立体と永久磁石との相対位
置に応じて、該可動コイル組立体が移動方向に推
力を発生するように、各可動コイルに流れる電流
の向きを切換えながら各可動コイルに給電する給
電パターンとを備え、複数個の可動コイルのうち
少なくとも1個が常に駆動される可動コイル型リ
ニヤモータを考案した。``Background of the invention'' The applicant for utility model registration related to this invention previously proposed an inverted U-shaped cross section made of non-magnetic material in order to solve the problems of the above-mentioned prior art as Utility Model Application No. 59-71491. a rail, a pair of yokes arranged opposite to each other on both sides of the inner surface of the rail, and arranged longitudinally on one of the yokes so that adjacent ones facing the other yoke have different polarities,
A moving coil assembly including a plurality of permanent magnets that conduct magnetic flux through a gap with the other yoke, and a moving coil assembly capable of moving within the gap in a direction perpendicular to the magnetic flux while being guided by a rail and the permanent magnets. A moving coil assembly in which a solid body includes a plurality of moving coils having an air core portion at the center, and the winding direction of the winding portion of the moving coil is perpendicular to the magnetic flux, and a moving coil center in the moving coil assembly. A current collecting brush provided in an air core portion of the movable coil and connected to a winding end of each moving coil, and a positive and negative conductor disposed on a side surface of the other yoke within the rail so as to be able to contact the current collecting brush. , a power supply that supplies power to each moving coil while switching the direction of the current flowing through each moving coil so that the moving coil assembly generates thrust in the moving direction according to the relative position between the moving coil assembly and the permanent magnet; We have devised a moving coil type linear motor which is equipped with a pattern and in which at least one of a plurality of moving coils is always driven.
この考案は、上記構成による先の考案をさらに
ブラシおよび給電パターンの配設位置を特定する
ことにより改良し、推力向上を狙つたものであ
る。 This invention is an improvement on the previous invention with the above-mentioned configuration by further specifying the arrangement positions of the brushes and the power supply pattern, and aims at improving the thrust force.
「実施例」
つぎに、この考案の実施例を図面に基づいて説
明する。"Example" Next, an example of this invention will be described based on the drawings.
第1図はこの考案になる可動コイル型リニヤモ
ータの実施例を示す要部斜視図、第2図は可動コ
イル組立体の側面図、第3図は永久磁石と可動コ
イル組立体の配置を示す斜視図であり、フレミン
グの左手の法則による推力発生の原理を同時に示
す。第4図a,bおよびcは作動状態における可
動コイル組立体の電流の流れと磁石および給電パ
ターンとの関連を示す断面図および底面図であ
る。 Fig. 1 is a perspective view of essential parts showing an embodiment of the moving coil type linear motor of this invention, Fig. 2 is a side view of the moving coil assembly, and Fig. 3 is a perspective view showing the arrangement of the permanent magnets and the moving coil assembly. This figure also shows the principle of thrust generation according to Fleming's left-hand rule. FIGS. 4a, 4b, and 4c are sectional views and bottom views showing the relationship between the current flow of the moving coil assembly and the magnet and power supply pattern in the operating state.
第1図から第4図において、1は非磁性材料で
形成された逆U字状断面を有するレールであり、
このレール1の一方の片側内面にはコ字断面を有
するマグネツト保持部2によつて、平板状で厚み
方向に着磁され隣接する磁極の極性が異なるよう
に配置した永久磁石3が保持されている。レール
1の内部には、永久磁石3によりマグネツト保持
部2を介して、上下端を折曲し断面コ字状にした
一対の可動コイル5,5′を包含する可動コイル
組立体が支持されており、これらの可動コイル
5,5′は永久磁石3に案内されて移動自在にさ
れている。また、一対の可動コイル5,5′はそ
れぞれ磁石3の磁極の1.5倍の長さを持ち、中央
に磁石3の軸極の0.5倍の長さの空間を有してお
り、永久磁石3と対向されている。可動コイル組
立体における可動コイル5,5′の上部には、そ
れぞれのコイルの巻線端と結線された集電ブラシ
6A,6Bが設けられており、これらのブラシ6
A,6Bは第4図cに示すようにブラシの軌跡T
が1条になるように一列に配設されている。レー
ル1内面に上端には給電パターン7が配置してあ
る。この給電パターン7の正負導体7A,7B
は、一列のブラシ6A,6Bが切換え接触するよ
うに交互に入り組ませて配置してあり、正導体7
Aと負導体7Bの入り組み部分の長さは、いずれ
もほぼ永久磁石3の磁極の長さよりやや短くして
磁極性が変る継目部分に若干の長さの絶縁部分7
Cを介在させてある。集電ブラシ6A,6Bの正
負導体7A,7Bとの接触部分の間隔は磁石3の
磁極の0.5倍よりやや長くし、可動コイル5,
5′の一方又は双方の有効巻線部が磁石3による
同一方向の磁束内に完全に入つている間に、同一
方向の磁束内に入つている可動コイル5,5′に
給電パターン7から該可動コイル5,5′のブラ
シ6Aおよび/または6Bに通電を行うようにし
てある。レール1の一方の片側には永久磁石3と
の間に平板状をなすヨーク4Aが嵌入されてお
り、レール1の他方の片側には、可動コイル5,
5′と微少な空隙を余して上下両端の嵌入部41
Bの間に突出面42Bを形成する断面形状とした
ヨーク4Bが嵌入されている。 In FIGS. 1 to 4, 1 is a rail having an inverted U-shaped cross section made of non-magnetic material,
A flat permanent magnet 3 is held on the inner surface of one side of the rail 1 by a magnet holding portion 2 having a U-shaped cross section, and is magnetized in the thickness direction and arranged so that adjacent magnetic poles have different polarities. There is. Inside the rail 1, a moving coil assembly including a pair of moving coils 5 and 5' whose upper and lower ends are bent and have a U-shaped cross section is supported by a permanent magnet 3 via a magnet holding part 2. These moving coils 5, 5' are guided by a permanent magnet 3 and are movable. The pair of moving coils 5 and 5' each have a length 1.5 times the magnetic pole of the magnet 3, and have a space in the center that is 0.5 times the length of the axial pole of the magnet 3. Being faced with. At the top of the movable coils 5, 5' in the movable coil assembly, current collecting brushes 6A, 6B connected to the winding ends of the respective coils are provided.
A and 6B are the trajectory T of the brush as shown in Fig. 4c.
are arranged in a row so that there is one row. A power supply pattern 7 is arranged at the upper end of the inner surface of the rail 1. Positive and negative conductors 7A and 7B of this power supply pattern 7
The brushes 6A and 6B in a row are alternately intertwined so as to switch and contact each other, and the positive conductor 7
The length of the interlocking part between A and the negative conductor 7B is approximately slightly shorter than the length of the magnetic pole of the permanent magnet 3, and a slightly longer insulating part 7 is provided at the joint where the magnetic polarity changes.
C is interposed. The distance between the contact parts of the current collector brushes 6A and 6B with the positive and negative conductors 7A and 7B is set slightly longer than 0.5 times the magnetic pole of the magnet 3,
While the effective winding portions of one or both of the coils 5' are completely included in the magnetic flux in the same direction by the magnet 3, the moving coils 5, 5', which are included in the magnetic flux in the same direction, are supplied from the power supply pattern 7. The brushes 6A and/or 6B of the movable coils 5, 5' are energized. On one side of the rail 1, a flat plate-shaped yoke 4A is fitted between the permanent magnet 3, and on the other side of the rail 1, a movable coil 5,
5' and a small gap, the fitting portions 41 are inserted at both the upper and lower ends.
A yoke 4B having a cross-sectional shape forming a protruding surface 42B is fitted between the yoke 4B.
「作動」
上記構成において、まず本実施例の可動コイル
型リニヤモータの作動原理を説明する。第3図に
示すように可動コイル5′に集電ブラシ6Bを介
して通電したとき、右側の有効巻線部を上から下
に向い左側の有効巻線部を下から上に向う電流I
が流れたとし、また磁石3の磁極の極性N,Sに
従い図示の如く右側の有効巻線部に手前から紙面
に向う磁束φが働き、左側の有効巻線部には紙面
から手前に向う磁束φが働くと、可動コイル5′
の左右の有効巻線部に流れる電流Iにフレミング
の左手の法則に従い電流Iおよび磁束φと直角方
向に図の右方に向かう力Fが生じる。そして、可
動コイル5′が図の右方へ進行するため、磁石3
の磁極の極性N,Sに合せて電流Iを順次に切換
えると、可動コイル5′は断続的に図の右方に向
かう力Fを受けて直線的に進行する。以上がリニ
ヤモータの作動原理である。なお、一対をなす他
方の可動コイル5も磁極長さで1.5ピツチ進んだ
位置で、前記可動コイル5′と同様に交互に断続
的に通電され図の右方に向かう力Fが発生する。"Operation" In the above configuration, first, the operating principle of the moving coil type linear motor of this embodiment will be explained. As shown in FIG. 3, when the movable coil 5' is energized via the current collector brush 6B, a current I flows through the right effective winding section from top to bottom and through the left effective winding section from bottom to top.
flows, and according to the polarity N and S of the magnetic poles of the magnet 3, a magnetic flux φ from the front toward the page acts on the effective winding section on the right side as shown in the figure, and a magnetic flux toward the front from the page surface acts on the effective winding section on the left side. When φ works, the moving coil 5'
According to Fleming's left-hand rule, a force F is generated in the current I flowing through the left and right effective windings in a direction perpendicular to the current I and the magnetic flux φ toward the right in the figure. Since the movable coil 5' moves to the right in the figure, the magnet 3
When the current I is sequentially switched in accordance with the polarities N and S of the magnetic poles, the moving coil 5' is intermittently subjected to a force F directed to the right in the figure, and moves linearly. The above is the operating principle of a linear motor. The other movable coil 5 of the pair is also alternately and intermittently energized in the same manner as the movable coil 5' at a position 1.5 pitches ahead in terms of magnetic pole length, and a force F directed to the right in the figure is generated.
つぎに、この考案の特長の一つである簡素化さ
れた給電パターンでの作動を第4図を用いて説明
する。 Next, operation with a simplified power supply pattern, which is one of the features of this invention, will be explained using FIG. 4.
第4図a図示のごとく、可動コイル組立体の一
対をなす2つの可動コイル5,5′の有効巻線部
のすべてがそれぞれ磁石3による同一極性の磁束
内に入つている場合は、第4図c図示の軌跡T上
に丸印で示されたように集電ブラシ6A,6Bの
両端の接触部分がそれぞれ給電パターン7の正負
導体7A,7B上に乗り、一対の可動コイル5,
5′の双方に短時間逆向きに同時通電するため、
そろつて右向きの推力を得る。 As illustrated in FIG. As indicated by the circles on the locus T shown in FIG.
In order to simultaneously energize both terminals 5' in opposite directions for a short period of time,
All together, you will get thrust to the right.
また、第4図b図示のごとく可動コイル組立体
の一方の可動コイル5′だけが、同一極性の磁束
内に有効巻線部が入つている場合は、第4図c図
示の軌跡T上の左側ばつ印のように集電ブラシ6
Bの両端が給電パターン7の正負導体7A,7B
上に乗り、可動コイル5′だけに通電され図の右
向きの推力を得る。その時、他方の可動コイル5
のごとく磁束の極性が変化する位置に有効巻線部
が入つている場合は、第4図c図示の軌跡T上の
右側のばつ印のように集電ブラシ6Aの両端が負
導体7B上に乗り、他方の可動コイル5は同一極
性でシヨートされるため通電されない。 In addition, when only one moving coil 5' of the moving coil assembly has its effective winding part within the magnetic flux of the same polarity as shown in FIG. 4b, the trajectory T shown in FIG. Current collector brush 6 as shown by the cross mark on the left side
Both ends of B are the positive and negative conductors 7A and 7B of the power supply pattern 7
Climb on top and energize only the moving coil 5' to obtain a rightward thrust in the figure. At that time, the other moving coil 5
If the effective winding part is located at a position where the polarity of the magnetic flux changes as shown in FIG. The other movable coil 5 is shot with the same polarity and is not energized.
本実施例の可動コイル組立体は可動コイル5,
5′が2個一対になつているため、2個の可動コ
イルのうち少なくとも1個が常に駆動されるよう
に、2個の可動コイル5,5′は交互に通電され、
可動コイル組立体は継続して同一方向に動く、可
動コイル5,5′を包含する可動コイル組立体を
逆方向に動かす場合は、給電パターン7の正負導
体7A,7Bに加える電圧の極性を逆にすれば良
い。 The moving coil assembly of this embodiment includes a moving coil 5,
Since two moving coils 5' are arranged in a pair, the two moving coils 5, 5' are alternately energized so that at least one of the two moving coils is always driven.
The moving coil assembly continues to move in the same direction. When moving the moving coil assembly including moving coils 5 and 5' in the opposite direction, the polarity of the voltage applied to the positive and negative conductors 7A and 7B of the power supply pattern 7 must be reversed. You should do it.
上記の実施例によれば、第一には、可動コイル
組立体の可動コイル5,5′が上部の集電ブラシ
6A,6Bおよびレール1上端の給電パターン7
により上端で給電されるため、これら可動コイル
5,5′の側面とヨーク4A,4B間の空隙を縮
小し、磁石3により可動コイル5,5′に加わる
磁束密度を大きくすることができるので、可動コ
イル型リニヤモータの推力を増加させることがで
きるという利点がある。さらに、第二に、可動コ
イル組立体の可動コイル5,5′の上端に一列に
設けたブラシ6A,6Bで該可動コイル5,5′
を給電できるようにしたことにより、集電ブラシ
6A,6Bの軌跡Tが1条になるため、給電パタ
ーン7の正負導体7A,7Bの形状が、ブラシ軌
跡を2条にしていた先の出願(実願昭59−71491
号)の実施例に比して簡素化され、先の出願の実
施例においては正負導体形状を最高で4本に枝分
かれさせていたものが、この考案の実施例におい
ては2本の導体を交互に入り組ませればよいた
め、正負導体7A,7Bの幅が広くなることか
ら、これら導体7A,7Bの抵抗が減少し、給電
パターン7への給電点から集電ブラシ6A,6B
が遠ざかつても、可動コイル5,5′に印加され
る電圧が低下せず、この面においても可動コイル
型リニヤモータの推力が向上するという利点があ
る。そのため、正負導体7A,7Bの膜厚が低下
できるので、給電パターン7が安価となる。ま
た、上記実施例においては、可動コイル組立体の
一対の可動コイル5,5′の側面に配設するヨー
ク4Bを、両端嵌入部41Bの間に突出面42B
を形成する断面形状としているから、一層にヨー
ク4Bと可動コイル組立体の可動コイル5,5′
間の空隙を狭くし、磁束密度を高くして推力を向
上することができるという利点がある。なお、可
動コイル組立体には可動コイルを3個以上の複数
個を包含させてもよい。また、集電ブラシは回転
可能なローラにしてもよい。可動コイル組立体
は、レール内の永久磁石の上下で折曲されている
が、磁石の上下で折曲しなくてもよい。 According to the above embodiment, firstly, the movable coils 5, 5' of the movable coil assembly are connected to the upper current collecting brushes 6A, 6B and the power feeding pattern 7 at the upper end of the rail 1.
Since power is supplied at the upper end of the movable coils 5, 5', the air gap between the side surfaces of the movable coils 5, 5' and the yokes 4A, 4B can be reduced, and the magnetic flux density applied to the movable coils 5, 5' by the magnet 3 can be increased. There is an advantage that the thrust of the moving coil type linear motor can be increased. Furthermore, secondly, brushes 6A and 6B provided in a row at the upper ends of the movable coils 5 and 5' of the movable coil assembly are used to control the movable coils 5 and 5'.
By making it possible to supply power, the locus T of the current collecting brushes 6A and 6B becomes one line. Therefore, the shape of the positive and negative conductors 7A and 7B of the power supply pattern 7 differs from the previous application in which the brush locus was made into two lines ( Jitsugan 59-71491
The embodiment of this invention is simplified compared to the embodiment of the previous application, in which the positive and negative conductors were branched into a maximum of four branches, but in the embodiment of this invention, the two conductors are alternately branched. Since the widths of the positive and negative conductors 7A and 7B are widened, the resistance of these conductors 7A and 7B is reduced, and the current collection brushes 6A and 6B are connected from the power feeding point to the power feeding pattern 7.
Even if the moving coils 5, 5' move away from each other, the voltage applied to the moving coils 5, 5' does not decrease, and in this respect as well, there is an advantage that the thrust of the moving coil type linear motor is improved. Therefore, the film thickness of the positive and negative conductors 7A and 7B can be reduced, so that the power supply pattern 7 can be made inexpensive. Further, in the above embodiment, the yoke 4B disposed on the side surfaces of the pair of moving coils 5 and 5' of the moving coil assembly is arranged between the protruding surface 42B and the fitting portions 41B at both ends.
Since the cross-sectional shape forms the yoke 4B and the movable coils 5, 5' of the movable coil assembly,
This has the advantage of narrowing the gap between them and increasing the magnetic flux density to improve thrust. Note that the moving coil assembly may include three or more moving coils. Further, the current collecting brush may be a rotatable roller. Although the moving coil assembly is bent above and below the permanent magnet in the rail, it does not have to be bent above and below the magnet.
「効果」
以上述べたように、この考案の可動コイル型リ
ニヤモータは、非磁性材料で形成された逆U字状
断面のレールと、レール内面両側に対向して配置
された一対のヨークと、両ヨークのいずれか一方
に、他方のヨークと対向して隣り合うどうしは極
性がそれぞれ異なるように長手方向に配置され、
前記他方のヨークとの空隙に磁束を通じる複数個
の永久磁石と、前記空隙内を、レールおよび永久
磁石に案内されて磁束と直角方向に運動できる可
動コイル組立体であつて、可動コイル組立体が複
数個の可動コイルを包含し、かつ可動コイルの巻
線部の巻線方向が磁束と直角である可動コイル組
立体と、可動コイル組立体の上部に設けられ、各
可動コイルの巻線端と結線された集電ブラシと、
前記集電ブラシと接触可能に前記レール内上面に
配置された正負導体を包含し、可動コイル組立体
と永久磁石との相対位置に応じて、該可動コイル
組立体が移動方向に推力を発生するように、各可
動コイルに流れる電流の向きを切換えながら各可
動コイルに給電する給電パターンとを備え、複数
個の可動コイルのうち少なくとも1個が常に駆動
されることを特徴とするから、永久磁石を片側配
置にしたことにより断面形状が小型であり、また
可動コイル組立体に包含される可動コイルを集電
ブラシと給電パターンにより切換え通電するので
磁気センサおよび電子スイツチング回路と導線の
接続およびとり回しが不要になるという効果があ
る。``Effects'' As described above, the moving coil linear motor of this invention consists of a rail with an inverted U-shaped cross section made of non-magnetic material, a pair of yokes disposed opposite to each other on both sides of the inner surface of the rail, and On either one of the yokes, adjacent yokes facing the other yoke are arranged in the longitudinal direction so that their polarities are different,
A moving coil assembly comprising: a plurality of permanent magnets through which magnetic flux passes through the air gap with the other yoke; and a moving coil assembly capable of moving within the air gap in a direction perpendicular to the magnetic flux while being guided by a rail and the permanent magnets. includes a plurality of moving coils, and the winding direction of the winding portion of the moving coil is perpendicular to the magnetic flux; a current collector brush connected to the
The movable coil assembly includes positive and negative conductors disposed on the inner upper surface of the rail so as to be able to come into contact with the current collecting brush, and the movable coil assembly generates thrust in the moving direction depending on the relative position of the movable coil assembly and the permanent magnet. A permanent magnet is provided with a power feeding pattern that supplies power to each moving coil while switching the direction of the current flowing through each moving coil, and is characterized in that at least one of the plurality of moving coils is always driven. By arranging it on one side, the cross-sectional shape is small, and since the moving coil included in the moving coil assembly is switched and energized by the current collection brush and the power supply pattern, it is easy to connect and route the magnetic sensor and electronic switching circuit with the conductor wire. This has the effect of making it unnecessary.
さらに、この考案は、可動コイル組立体の上部
で切換え通電が可能なようにしているから、永久
磁石と両ヨークを通る磁束通路の空隙の幅を狭く
し可動コイル型リニヤモータの推力を向上させる
ことができるという効果がある。 Furthermore, since this invention enables switching of energization at the top of the moving coil assembly, the width of the gap in the magnetic flux path passing through the permanent magnet and both yokes is narrowed, thereby improving the thrust of the moving coil type linear motor. It has the effect of being able to
第1図はこの考案になるリニヤモータの実施例
を示す要部斜視図、第2図は可動コイル組立体の
側面図、第3図は永久磁石と可動コイル組立体の
配置を示す斜視図、第4図a,bおよびcは作動
状態における可動コイル組立体の各可動コイルの
電流の流れと永久磁石および給電パターンとの関
連を示す断面図および底面図である。
1……レール、2……マグネツト保持部、3…
…永久磁石、4A,4B……ヨーク、41B……
嵌入部、42……突出面、5,5′……可動コイ
ル、6A,6B……集電ブラシ、7……給電パタ
ーン、7A,7B……正負導体、7c……絶縁部
分。
Fig. 1 is a perspective view of essential parts showing an embodiment of the linear motor according to this invention, Fig. 2 is a side view of the moving coil assembly, Fig. 3 is a perspective view showing the arrangement of the permanent magnets and the moving coil assembly, 4a, b, and c are a sectional view and a bottom view showing the relationship between the current flow of each moving coil of the moving coil assembly and the permanent magnet and the power supply pattern in the operating state. 1...Rail, 2...Magnet holding part, 3...
...Permanent magnet, 4A, 4B... Yoke, 41B...
Fitting portion, 42...Protruding surface, 5, 5'... Moving coil, 6A, 6B... Current collection brush, 7... Power feeding pattern, 7A, 7B... Positive and negative conductors, 7c... Insulating portion.
Claims (1)
ルと、 レール内面両側に対向して配置された一対の
ヨークと、 両ヨークのいずれか一方に、他方のヨークと
対向して隣り合うどうしは極性がそれぞれ異な
るように長手方向に配置され、前記他方のヨー
クとの空隙に磁束を通じる複数個の永久磁石
と、 前記空隙内を、レールおよび永久磁石に案内
されて磁束と直角方向に運動できる可動コイル
組立体であつて、該可動コイル組立体が複数個
の可動コイルを包含し、かつ可動コイルの巻線
部の巻線方向が磁束と直角である可動コイル組
立体と、 可動コイル組立体の上部に設けられ、各可動
コイルの巻線端と結線された集電ブラシと、 前記集電ブラシと接触可能に前記レール内上
面に配置された正負導体を包含し、可動コイル
組立体と永久磁石との相対位置に応じて、該可
動コイル組立体が移動方向に推力を発生するよ
うに、各可動コイルに流れる電流の向きを切換
えながら各可動コイルに給電する給電パターン
と、 を備え、複数個の可動コイルのうち少なくとも
1個が常に駆動されることを特徴とする可動コ
イル型リニヤモータ。 (2) 前記集電ブラシが、前記可動コイル組立体の
上部に一列に設けられ、前記給電パターンが前
記集電ブラシと切換え接触する正負導体を交互
に入り組ませて配置していることを特徴とする
実用新案登録請求の範囲第1項記載の可動コイ
ル型リニヤモータ。[Claims for Utility Model Registration] (1) A rail with an inverted U-shaped cross section made of non-magnetic material, a pair of yokes disposed facing each other on both sides of the inner surface of the rail, and one of the yokes, A plurality of permanent magnets that are arranged in the longitudinal direction so that adjacent ones facing the other yoke have different polarities, and that conduct magnetic flux through the gap with the other yoke; and a rail and a permanent magnet that pass through the gap with the other yoke. A moving coil assembly capable of moving in a direction perpendicular to a magnetic flux guided by a moving coil assembly, the moving coil assembly including a plurality of moving coils, and a winding direction of a winding portion of the moving coil being perpendicular to the magnetic flux. A certain moving coil assembly, a current collecting brush provided on the upper part of the moving coil assembly and connected to the winding end of each moving coil, and a positive and negative current collector brush disposed on the upper surface of the rail so as to be able to come into contact with the current collecting brush. Each movable coil includes a conductor and switches the direction of the current flowing through each movable coil so that the movable coil assembly generates thrust in the moving direction according to the relative position of the movable coil assembly and the permanent magnet. What is claimed is: 1. A moving coil type linear motor comprising: a power feeding pattern for feeding power to; and at least one of the plurality of moving coils is always driven. (2) The current collecting brushes are provided in a row above the movable coil assembly, and the power feeding pattern is arranged such that positive and negative conductors that switch and come into contact with the current collecting brushes are intertwined with each other alternately. A moving coil type linear motor according to claim 1 of the utility model registration claim.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13750884U JPH0139116Y2 (en) | 1984-09-11 | 1984-09-11 | |
AU42454/85A AU580774B2 (en) | 1984-05-16 | 1985-05-14 | Moving coil type linear motor |
US06/733,775 US4641065A (en) | 1984-05-16 | 1985-05-14 | Moving coil type linear motor |
EP85105979A EP0161677B1 (en) | 1984-05-16 | 1985-05-15 | Moving coil type linear motor |
DE8585105979T DE3580186D1 (en) | 1984-05-16 | 1985-05-15 | LINEAR MOTOR OF THE DESIGN WITH A MOVING COIL. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13750884U JPH0139116Y2 (en) | 1984-09-11 | 1984-09-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6152492U JPS6152492U (en) | 1986-04-09 |
JPH0139116Y2 true JPH0139116Y2 (en) | 1989-11-22 |
Family
ID=30695923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13750884U Expired JPH0139116Y2 (en) | 1984-05-16 | 1984-09-11 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0139116Y2 (en) |
-
1984
- 1984-09-11 JP JP13750884U patent/JPH0139116Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6152492U (en) | 1986-04-09 |
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