JPS63114557A - Positioning device - Google Patents
Positioning deviceInfo
- Publication number
- JPS63114557A JPS63114557A JP25753586A JP25753586A JPS63114557A JP S63114557 A JPS63114557 A JP S63114557A JP 25753586 A JP25753586 A JP 25753586A JP 25753586 A JP25753586 A JP 25753586A JP S63114557 A JPS63114557 A JP S63114557A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- moving
- positioning device
- magnetic flux
- moving coil
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 9
- 230000035699 permeability Effects 0.000 claims abstract description 9
- 230000004907 flux Effects 0.000 abstract description 11
- 230000003190 augmentative effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用９寿〕
本発明は可動コイルを有する位置決め装置に関し、更に
詳しくは、磁気ディスク装置や光デイスク装置＋’Ｘに
おけるヘッド位置決め装置に見られるような精密位置決
め装置に関する。DETAILED DESCRIPTION OF THE INVENTION [9 years of industrial application] The present invention relates to a positioning device having a moving coil, and more specifically, to a positioning device having a moving coil. The present invention relates to a positioning device.
従来の位置決め装置は、第７図に示されるように、高透
磁率材料のヨーク２に上下対の複数の固定磁石１を固定
して閉磁気回路を構成し、樹脂や金属材料のコイルボビ
ン９０片面もしくは周縁部に銅線等の導体を複数回巻装
した扁平な可＊：＋イル１０を同行した可動部を閉磁気
回路の空隙部に（手入して、可動コイル１０に通電する
ことにより空隙部の磁界との電気磁気的な作用により可
動コイル１０を移動位置決めしていた。As shown in FIG. 7, the conventional positioning device forms a closed magnetic circuit by fixing a plurality of upper and lower pairs of fixed magnets 1 to a yoke 2 made of a high magnetic permeability material, and a coil bobbin 90 made of resin or metal material on one side. Alternatively, a flat coil 10 with a conductor such as a copper wire wound around the periphery multiple times can be inserted into the gap of the closed magnetic circuit (by arranging it and energizing the moving coil 10). The movable coil 10 is moved and positioned by electromagnetic action with the magnetic field in the gap.
しかし、前述の従来技術では、固定磁石の隣接部分や末
端部分の空隙部の磁束のフリンジングの大きい領域に可
動コイルが位置した場合、可動コイルの発生力は著しく
低下し可動コイル部の力定数の低下によりサーボ回路の
ゲインが低下し制御性を損なうばかりでな（、可動コイ
ルの内部でも固定磁石に近い導体はど発生力が大きく固
定磁石から遠ざかるほど４体の発生力が小さくなり振動
や発振の原因にもなり、さらには可動コイルの断面積に
比べて可動コイルがコイルボビンに固着すれる面積が小
さいため可動部の剛性が低く精密な位置決めを困難にし
ていた。However, in the above-mentioned conventional technology, when the moving coil is located in an area where the magnetic flux fringing is large in the air gap at the adjacent part or the end part of the fixed magnet, the force generated by the moving coil decreases significantly, and the force constant of the moving coil part decreases. Not only does this decrease the gain of the servo circuit, impairing controllability, but also inside the moving coil, the force generated by the conductor closest to the fixed magnet is large, and the further away from the fixed magnet, the smaller the force generated by the four bodies, causing vibrations. This may cause oscillation, and furthermore, since the area where the moving coil is fixed to the coil bobbin is smaller than the cross-sectional area of the moving coil, the rigidity of the moving part is low, making precise positioning difficult.
そこで本発明はこのような問題点を解決するもので、そ
の目的とするところは、可動コイルの発生力を向上し、
発生力の均一な領域を増大し、可動コイルからコイルボ
ビンに至るまでの可動部の剛性を向上し、発生力が大き
く可動範囲の広い振動の少ない制御性に優れた小型薄型
の精密位に決め装置を提供するところにある。Therefore, the present invention is intended to solve these problems, and its purpose is to improve the force generated by the moving coil,
A small and thin precision positioning device that increases the uniformity of the generated force and improves the rigidity of the moving parts from the moving coil to the coil bobbin.It has a large generated force, a wide movable range, low vibration, and excellent controllability. It is in a place where we provide.
本発明の位置決め装置は、扁平な可動コイルと固定磁石
とで構成され、可動コイルは高透磁率材料で構成される
コイルボビンに対して上下一対に配設保持されることを
特徴とする。The positioning device of the present invention is composed of a flat moving coil and a fixed magnet, and is characterized in that the moving coil is arranged and held as an upper and lower pair with respect to a coil bobbin made of a high magnetic permeability material.
本発明の上記の構成によれば、可動コイルの力発生部分
に空隙磁束を集中させ発生力が増大し、より扁平な可動
コイルとして可動コイルの剛性が向上し、可動コイルが
磁気回路に対して上下対称な位置に配設され可動コイル
保持体のねじれ振動等を低減し、磁束のフリンジングを
小さくして可動コイルの発生力が均一となる領域を拡大
することができる。According to the above configuration of the present invention, the air gap magnetic flux is concentrated in the force-generating portion of the moving coil, the generated force is increased, the rigidity of the moving coil is improved as the moving coil becomes flatter, and the moving coil is made more stable than the magnetic circuit. It is possible to reduce torsional vibration of the movable coil holder by disposing the movable coil holder in a vertically symmetrical position, reduce fringing of magnetic flux, and expand the area where the force generated by the movable coil is uniform.
（実施例〕
第１図は本発明の実施例における位置決め装置の要部断
面図であって、上下方向に着磁された複数の固定磁石１
が隣接して並べられると同時に」二重対をなして高透磁
率材料のヨーク２に接着等の手段により固着され閉磁気
回路を構成し、上下の固定磁石１の間の空隙には樹脂等
の保持体６にインサート等の千１２で高透磁率材料のコ
イルボビン３を固定しさらにコイルボビン３の上下には
扁平な可動コイル」−４及び扁平な可動コイル下５とが
接イ′１やインサートやアウトサート等により固着した
可動体が挿入され、保持体は位置決め装置のキャリッジ
等可動部へ接続され、可動コイルに通電することにより
キャリッジ等可動部を移動位置決めする。第２図は第１
図における固定磁石ｌとヨーク２とコイルボビン３とで
構成される閉磁気回路を示す図で、特にコイルボビ／３
の一方が固定磁石１の末端部分に位置し他方が固定磁石
１の隣接部分に位置する場合の図であり、矢印で磁束の
流れが示されるようにコイルボビン３がない場合の第５
図に比較して、コイルボビン３に磁束を集中できるだけ
でなく固定磁石ｌの末端部分や隣接部分での磁束のフリ
ンジングも低減している。(Embodiment) FIG. 1 is a sectional view of a main part of a positioning device in an embodiment of the present invention, in which a plurality of fixed magnets 1 magnetized in the vertical direction
are arranged adjacently and at the same time form a double pair and are fixed to the yoke 2 made of a high magnetic permeability material by means such as adhesive to form a closed magnetic circuit, and the gap between the upper and lower fixed magnets 1 is filled with resin, etc. A coil bobbin 3 made of a high magnetic permeability material is fixed to the holder 6 with an insert or the like, and a flat moving coil 4 and a flat moving coil lower 5 are connected to the upper and lower sides of the coil bobbin 3, respectively. A fixed movable body is inserted by an outsert or the like, and the holding body is connected to a movable part such as a carriage of a positioning device, and the movable part such as a carriage is moved and positioned by energizing a movable coil. Figure 2 is the first
This is a diagram showing a closed magnetic circuit composed of the fixed magnet l, yoke 2, and coil bobbin 3 in the figure, especially the coil bobbin/3.
This is a diagram where one of the two is located at the end portion of the fixed magnet 1 and the other is located at the adjacent portion of the fixed magnet 1, and as the arrows indicate the flow of magnetic flux, there is no coil bobbin 3.
Compared to the figure, not only can the magnetic flux be concentrated on the coil bobbin 3, but also the fringing of the magnetic flux at the end and adjacent parts of the fixed magnet 1 can be reduced.
従って、第１図の可動フィル上４及び可動コイルＦを通
過するＭＪ、束の増加に伴って発生力が増加し、また、
第６図に示されるように発生力が均一な力定数均一領域
８も磁束のフリンジングの低減により拡大することがで
き、位置決め装置の可動範囲を拡大することができる。Therefore, as the MJ and bundle passing through the movable filter 4 and the movable coil F in FIG. 1 increase, the generated force increases.
As shown in FIG. 6, the force constant uniform region 8 in which the generated force is uniform can also be expanded by reducing fringing of the magnetic flux, and the movable range of the positioning device can be expanded.
また、第１図から上下対の可動コイルは従来より扁平化
されコイルボビン３及び保持体６によりｌ−１形に保持
されており、可動部分の剛性は向上し振動の小さい可動
体を構成している。第３図は第１図における可動コイル
上４（可動コイル下５についても同様）と高透磁率材料
のコイルボビン３との平面的位置関係を示す図で可動コ
イルの力発生部分にコイルボビン３は配設されているが
、第４図のように高透磁率材料でＵ字形の板状コイルボ
ビン７を可動コイル上４及び可動コイル下５で挟持する
ｔｌＷ Ｘｉとして保１′！ｆ体６に組み込んだり保持
体６を省略してら良い。尚、第１図において可動コイル
上４、可動コイル下５、コイルボビン３、保持体６で構
成される可動体は上下の固定磁石１による上下方向空隙
磁束に対して直交方向に移動するが、可ｖノ体はりニア
型でもロータリ型でも良く、小型の磁気ディスク装置の
ヘッド位置決め装置のように高速で高精度な位置決めを
行う位置決め装置に好適である。In addition, as shown in Fig. 1, the upper and lower moving coils are flattened and held in an L-1 shape by the coil bobbin 3 and the holder 6, which improves the rigidity of the moving parts and constitutes a moving body with low vibration. There is. FIG. 3 is a diagram showing the planar positional relationship between the upper moving coil 4 (the same applies to the lower moving coil 5) and the coil bobbin 3 made of high magnetic permeability material in FIG. However, as shown in FIG. 4, a U-shaped plate-shaped coil bobbin 7 made of a high magnetic permeability material is held between an upper moving coil 4 and a lower moving coil 5. It may be incorporated into the f body 6 or the holding body 6 may be omitted. In FIG. 1, the movable body composed of the upper movable coil 4, the lower movable coil 5, the coil bobbin 3, and the holder 6 moves in a direction perpendicular to the vertical air gap magnetic flux generated by the upper and lower fixed magnets 1. It may be a linear type or a rotary type, and is suitable for a positioning device that performs high-speed and highly accurate positioning, such as a head positioning device for a small magnetic disk drive.
以上述べたように本発明によれば、扁平な可動コイルを
高透磁率材料でｆＭ成されるコイルボビンに対し」二重
一対に配設保持することにより、可動コイルの発生力（
力定数）が増大し、発生力の均一・な領域も増大し、可
動部の剛性が向上し、力発生効率の良く可動範囲の広い
振動の少ない制御性に優れた小型薄型の精密位置決めの
装置が得られるという効果を有する。As described above, according to the present invention, the force generated by the moving coil (
A compact, thin precision positioning device with increased force constant (force constant), increased uniformity of generated force, improved rigidity of moving parts, high efficiency in force generation, wide range of motion, low vibration, and excellent controllability. This has the effect that the following can be obtained.
第１図は本発明の位置決め装置の一実施例を示す要部断
面図。
第２図は第１図の位置決め装置の磁気回路を示す図。
ｉ３図は第１図の位置決め装置の可動コイルとコイルボ
ビ／の平面的位置関係を示す図。
第４図は他の実施例における可動コイルとコイルボビン
の平面的位置関係を示す図。
第５図はコイルボビンがない場合の磁気回路を示す図。
第６図は可動コイルの位置と発生力の関係を示す図。
第７図は従来の位置決め装置の要部断面図。
１・・・固定磁石
２・・・ヨーク
３．７・・・コイルボビン
４・・・可動コイル上
５・・・可動コイル下
６・・・保持体
以 上
第１図
第２図
第３図
第４１永１
第６図FIG. 1 is a sectional view of essential parts showing an embodiment of the positioning device of the present invention. FIG. 2 is a diagram showing a magnetic circuit of the positioning device of FIG. 1. Figure i3 is a diagram showing the planar positional relationship between the movable coil and the coil bobby of the positioning device in Figure 1. FIG. 4 is a diagram showing a planar positional relationship between a moving coil and a coil bobbin in another embodiment. FIG. 5 is a diagram showing a magnetic circuit without a coil bobbin. FIG. 6 is a diagram showing the relationship between the position of the moving coil and the generated force. FIG. 7 is a sectional view of a main part of a conventional positioning device. 1... Fixed magnet 2... Yoke 3.7... Coil bobbin 4... Upper moving coil 5... Lower moving coil 6... Holder and above Figure 1 Figure 2 Figure 3 41 Ei 1 Figure 6
Claims (1)
交する方向に磁界を与える固定磁石とで構成され、前記
可動コイルと前記固定磁石との電気磁気的な作用により
前記可動コイルを移動位置決めせしめる位置決め装置に
おいて、前記可動コイルは高透磁率材料で構成されるコ
イルボビンに対して上下一対に配設保持されることを特
徴とする位置決め装置。It is composed of a flat moving coil and a fixed magnet that applies a magnetic field in a direction perpendicular to the moving plane of the moving coil, and the moving coil is moved and positioned by electromagnetic action between the moving coil and the fixed magnet. The positioning device is characterized in that the movable coil is arranged and held as a pair of upper and lower coil bobbins made of a high magnetic permeability material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25753586A JPS63114557A (en) | 1986-10-29 | 1986-10-29 | Positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25753586A JPS63114557A (en) | 1986-10-29 | 1986-10-29 | Positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63114557A true JPS63114557A (en) | 1988-05-19 |
Family
ID=17307633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25753586A Pending JPS63114557A (en) | 1986-10-29 | 1986-10-29 | Positioning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63114557A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0343708U (en) * | 1989-09-04 | 1991-04-24 | ||
| KR20020031783A (en) * | 2000-10-24 | 2002-05-03 | 황의식 | Generator with magnetic closed circuit |
-
1986
- 1986-10-29 JP JP25753586A patent/JPS63114557A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0343708U (en) * | 1989-09-04 | 1991-04-24 | ||
| KR20020031783A (en) * | 2000-10-24 | 2002-05-03 | 황의식 | Generator with magnetic closed circuit |
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