JPH0463474B2 - - Google Patents
Info
- Publication number
- JPH0463474B2 JPH0463474B2 JP58039563A JP3956383A JPH0463474B2 JP H0463474 B2 JPH0463474 B2 JP H0463474B2 JP 58039563 A JP58039563 A JP 58039563A JP 3956383 A JP3956383 A JP 3956383A JP H0463474 B2 JPH0463474 B2 JP H0463474B2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- arm
- arms
- head
- shaft
- 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 - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
Description
【発明の詳細な説明】
この発明は磁気デイスク装置の円板間およびア
ーム間の温度差の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improving the temperature difference between disks and arms of a magnetic disk device.
従来、磁気デイスク装置のアクチエータとして
第１図に示すものがあつた。図において、１はコ
イルボビン、２はこのコイルボビン１に巻かれて
いるコイル、３〜７はコイルボビン１に一端が固
定されているアーム、８はアーム３〜７の他端に
それぞれ１つあるいは数個ずつ固定されているヘ
ツド（図では３のみに描いた）、９はアーム３〜
７に固定されている軸で通常は上下で軸受により
回転可能に支持されている。コイル２の周囲には
永久磁石が存在する（図では省略した）。 Conventionally, there has been an actuator for a magnetic disk device as shown in FIG. In the figure, 1 is a coil bobbin, 2 is a coil wound around this coil bobbin 1, 3 to 7 are arms having one end fixed to the coil bobbin 1, and 8 is one or several coils each at the other end of arms 3 to 7. 9 is the fixed head (only 3 is shown in the figure), and 9 is the arm 3~
7, and is usually rotatably supported by bearings at the top and bottom. A permanent magnet exists around the coil 2 (omitted in the figure).
次に動作について説明する。コイル２に通電す
るとコイル２は周囲の永久磁石の磁界より力を受
け、シヤフト９を軸として移動し、この結果アー
ム３〜７の先端のヘツド８もシヤフト９を軸とし
て移動する。アーム３〜７にそれぞれ取り付けら
れているヘツド８のうちのいずれか１つは位置の
検出を行なつており、この位置情報により適正な
位置で全体が停止し、それ以外のヘツド８の位置
が正確に決定される。 Next, the operation will be explained. When the coil 2 is energized, the coil 2 receives a force from the magnetic field of the surrounding permanent magnet and moves about the shaft 9, and as a result, the heads 8 at the tips of the arms 3 to 7 also move about the shaft 9. Any one of the heads 8 attached to each of the arms 3 to 7 detects the position, and this position information allows the entire head to stop at an appropriate position, and the positions of the other heads 8 to be adjusted. accurately determined.
従来のアクチエータは以上のように構成されて
いるので、コイルからの熱が直接アームを加熱し
そのためコイルに近いアームほど温度が上昇して
その結果アームやその近傍にある記録用円板の線
膨張量に差を生じて、円板への記録密度が高い場
合にはヘツド８の正確な位置決めができない欠点
があつた。 Conventional actuators are constructed as described above, so the heat from the coil directly heats the arm, which causes the temperature of the arm to rise closer to the coil, resulting in linear expansion of the arm and the recording disk near it. If the recording density on the disc is high due to the difference in the amount, there is a drawback that accurate positioning of the head 8 cannot be performed.
この発明は、上記のような従来のものの欠点を
除去するためになされたもので、コイルとアーム
の間に熱遮蔽手段を取り付けることにより、軸９
方向に並ぶ複数個のアーム及び円板間の温度差を
極めて小さくし、高密度記録を可能とするアクチ
エータを有する磁気デイスク装置を提供すること
を目的とする。 This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and by installing a heat shielding means between the coil and the arm, the shaft 9
It is an object of the present invention to provide a magnetic disk device having an actuator that makes the temperature difference between a plurality of arms and discs arranged in a direction extremely small and enables high-density recording.
以下、この発明の一実施例を図について説明す
る。第２図は説明のためにアームを一部断面とし
てあるが、１０はコイルとアームの間に位置し、
アームに固定されている熱遮蔽板であり、断熱性
のよい材料を使用している。遮蔽板はコイルには
接触しないように取り付けられている。 An embodiment of the present invention will be described below with reference to the drawings. In Fig. 2, the arm is partially shown in cross section for explanation, but 10 is located between the coil and the arm.
This is a heat shield plate fixed to the arm, and is made of a material with good heat insulation properties. The shield plate is attached so as not to come into contact with the coil.
したがつて、熱遮蔽板１０はコイルの出す熱が
直接コイルの近くのアーム４〜６を強く加熱する
ことを防ぐ。 Therefore, the heat shield plate 10 prevents the heat generated by the coil from directly heating the arms 4 to 6 near the coil strongly.
なお、上記実施例ではアーム３〜７に熱遮蔽板
を固定したが、コイルボビンに取り付けてもよ
い。 In the above embodiment, the heat shield plates are fixed to the arms 3 to 7, but they may be attached to the coil bobbin.
第１図は従来のアクチエータのアーム、コイ
ル、ヘツド部の既略機構を示す立体斜視図、第２
図はこの発明の一実施例の一部破断斜視図であ
る。
１はコイルボビン、２はコイル、３〜７はアー
ム、８はヘツド、９はシヤフト、１０は熱遮蔽板
である。なお、図中、同一符号は同一、又は相当
部分を示す。
Figure 1 is a three-dimensional perspective view showing the existing mechanism of the arm, coil, and head of a conventional actuator;
The figure is a partially cutaway perspective view of an embodiment of the present invention. 1 is a coil bobbin, 2 is a coil, 3 to 7 are arms, 8 is a head, 9 is a shaft, and 10 is a heat shield plate. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
の取り付けられているアームと、このアームの他
端側に取り付けられこのアームを駆動するコイル
とを備え、上記アームとコイルとの間に熱遮蔽手
段を配設したことを特徴とする磁気デイスク装
置。1. An arm that is rotatably supported by a shaft and has a head attached to one end, and a coil that is attached to the other end of this arm and drives this arm, and a heat shield is provided between the arm and the coil. A magnetic disk device characterized in that a means is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3956383A JPS59165274A (en) | 1983-03-10 | 1983-03-10 | Magnetic disc device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3956383A JPS59165274A (en) | 1983-03-10 | 1983-03-10 | Magnetic disc device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59165274A JPS59165274A (en) | 1984-09-18 |
| JPH0463474B2 true JPH0463474B2 (en) | 1992-10-09 |
Family
ID=12556544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3956383A Granted JPS59165274A (en) | 1983-03-10 | 1983-03-10 | Magnetic disc device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59165274A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56143569A (en) * | 1980-02-29 | 1981-11-09 | Digital Equipment Corp | Rotary actuator assembly for head position setting device of disk driving apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58148767U (en) * | 1982-03-30 | 1983-10-06 | 富士通株式会社 | magnetic disk device |
-
1983
- 1983-03-10 JP JP3956383A patent/JPS59165274A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56143569A (en) * | 1980-02-29 | 1981-11-09 | Digital Equipment Corp | Rotary actuator assembly for head position setting device of disk driving apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59165274A (en) | 1984-09-18 |
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