JPH04186586A - Magnetic disk apparatus - Google Patents
Magnetic disk apparatusInfo
- Publication number
- JPH04186586A JPH04186586A JP31695490A JP31695490A JPH04186586A JP H04186586 A JPH04186586 A JP H04186586A JP 31695490 A JP31695490 A JP 31695490A JP 31695490 A JP31695490 A JP 31695490A JP H04186586 A JPH04186586 A JP H04186586A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic disk
- magnetic head
- magnetic
- carriage
- support member
- 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
- 239000000853 adhesive Substances 0.000 claims abstract description 12
- 230000001070 adhesive effect Effects 0.000 claims abstract description 12
- 230000035699 permeability Effects 0.000 claims abstract description 5
- 101000606504 Drosophila melanogaster Tyrosine-protein kinase-like otk Proteins 0.000 abstract description 5
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000013464 silicone adhesive Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は磁気ディスク装置に関し、特に磁気ヘッドのシ
ールド構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic disk device, and particularly to a shield structure for a magnetic head.
［従来の技術］
従来の磁気ディスク装置について第３図及び第４図を用
いて説明する。[Prior Art] A conventional magnetic disk device will be described with reference to FIGS. 3 and 4.
第３図は磁気ディスク装置の主要部品を示す分解斜視図
であり、複数の磁気ディスクｌはスピンドルモータ２上
に所定の間隔で積層配置され、各磁気ディスク１の各記
録面に対向して複数の磁気ヘッド３が配置されている。FIG. 3 is an exploded perspective view showing the main components of the magnetic disk device, in which a plurality of magnetic disks 1 are stacked at predetermined intervals on a spindle motor 2, and a plurality of magnetic disks 1 are arranged facing each recording surface of each magnetic disk 1. A magnetic head 3 is arranged.
この磁気ヘッド３はキャリッジ４上に搭載されており、
キャリッジ４は前記スピンドルモータ２と同様にベース
となる支持部材５により支持されている。キャリッジ４
は図示しないガイドにより案内されて磁気ディスク１の
半径方向に移動自在に構成され、その移動は図示せぬモ
ータにより駆動される。支持部材５とそのカバー６とで
磁気ディスク１、スピンドルモータ２及びキャリッジ４
等の構成部品が密封されている。This magnetic head 3 is mounted on a carriage 4,
Like the spindle motor 2, the carriage 4 is supported by a support member 5 serving as a base. Carriage 4
is configured to be movable in the radial direction of the magnetic disk 1 while being guided by a guide (not shown), and its movement is driven by a motor (not shown). The support member 5 and its cover 6 support the magnetic disk 1, spindle motor 2, and carriage 4.
Components such as these are sealed.
第４図は磁気ディスク１と磁気ヘッド３との位置関係を
示す部分断面図であり、この磁気ヘッド３は各磁気ディ
スク１の記録面に対向して配置され、この磁気ヘッド３
の移動範囲（磁気ディスク半径方内）に対応する支持部
材５の上面にはフェライト等の高透磁率材料から成るシ
ールド板７がエポキシ系接着剤にて貼着されている。図
では、支持部材５がスピンドルモータ２とキャリッジ４
に対して別部材で構成されているため、上記シールド板
７も各々別個に貼着されているものである。このシール
ド板７は磁気ヘッド３による磁気ディスク１への情報の
書き込みあるいは磁気ディスク１からの情報の読み取り
の際のノイズを低減させるためのものであり、小型で記
憶容量の高い磁気ディスク装置が求められて記録密度が
高められてくると、磁気ヘッド３に対するノイズ対策が
必要となる。このために採用されているものである。FIG. 4 is a partial cross-sectional view showing the positional relationship between the magnetic disk 1 and the magnetic head 3. This magnetic head 3 is arranged facing the recording surface of each magnetic disk 1.
A shield plate 7 made of a high magnetic permeability material such as ferrite is adhered to the upper surface of the support member 5 corresponding to the movement range (in the radial direction of the magnetic disk) using an epoxy adhesive. In the figure, the support member 5 is connected to the spindle motor 2 and the carriage 4.
Since the shield plates 7 are constructed of separate members from each other, the shield plates 7 are also attached separately. This shield plate 7 is for reducing noise when the magnetic head 3 writes information to the magnetic disk 1 or reads information from the magnetic disk 1, and is required for small magnetic disk devices with high storage capacity. As the recording density increases, noise countermeasures for the magnetic head 3 become necessary. It is adopted for this purpose.
［発明が解決しようとする課題］
従来装置では、支持部材５が一般に成形容易なアルミニ
ウム合金で成形され、シールド板７はフェライトが用い
られているが、アルミニウム合金とフェライトとでは熱
膨張係数に大きな差があるため、情報の書き込み時と読
み出し時に温度差があると、支持部材５が変形し、スピ
ンドルモータ２と磁気ヘッド３の位置関係にずれを生じ
させ、磁気ヘッド３のオフトラックが生ずるという欠点
がある。[Problems to be Solved by the Invention] In conventional devices, the support member 5 is generally made of an easily molded aluminum alloy, and the shield plate 7 is made of ferrite, but the thermal expansion coefficients of aluminum alloy and ferrite are large. Because of this difference, if there is a temperature difference between writing and reading information, the support member 5 will deform, causing a shift in the positional relationship between the spindle motor 2 and the magnetic head 3, and causing the magnetic head 3 to go off-track. There are drawbacks.
本発明は、上記課題を解決するためのもので、スピンド
ルモータ及びキャリッジを支持する支持部材の少なくと
も磁気ヘッドの移動範囲近傍に高透磁率材料から成るシ
ールド板をゴム系の接着剤により接着固定するようにし
た磁気ディスク装置を提供することを目的とする。The present invention is intended to solve the above problems, and includes adhesively fixing a shield plate made of a high magnetic permeability material to at least the vicinity of the moving range of the magnetic head on a support member that supports a spindle motor and a carriage using a rubber adhesive. It is an object of the present invention to provide a magnetic disk device having the following structure.
［課題を解決するための手段１
本発明の磁気ディスク装置は、磁気ディスクを搭載する
スピンドルモータと、前記磁気ディスクに対向して設け
られた磁気ヘッドを搭載するキャリッジと、前記スピン
ドルモータ及びキャリッジを支持する支持部材とを備え
た磁気ディスク装置において、前記支持部材の少なくと
も前記磁気ヘッドの移動範囲近傍に、高透磁率からなる
シールド板をゴム系の接着剤により接着固定するように
構成したものである。[Means for Solving the Problems 1] A magnetic disk device of the present invention includes a spindle motor on which a magnetic disk is mounted, a carriage on which a magnetic head is mounted facing the magnetic disk, and a spindle motor and a carriage on which a magnetic head is mounted. A magnetic disk drive comprising a support member that supports the magnetic head, wherein a shield plate having high magnetic permeability is adhesively fixed to the support member at least in the vicinity of the movement range of the magnetic head using a rubber adhesive. be.
［実施例］
次に、本発明の実施例について第１図及び第２図を参照
して詳細に説明する。[Example] Next, an example of the present invention will be described in detail with reference to FIGS. 1 and 2.
第１図磁気ヘッド３、磁気ディスク１及び支持部材５と
の関係を示す断面図であり、各部材の構成は第３図及び
第４図に示した従来装置と略同様である。FIG. 1 is a sectional view showing the relationship among a magnetic head 3, a magnetic disk 1, and a support member 5, and the configuration of each member is approximately the same as that of the conventional device shown in FIGS. 3 and 4.
図において、アルミニウム合金で成形される支持部材５
上にはスピンドルモータ２及びキャリッジ４が設けられ
、このスピンドルモータ２上には所定の間隔で複数の磁
気ディスク１が搭載されている。この支持部材５はスピ
ンドルモータ２を支持するハウジングベースと、キャリ
ッジ４を支持するキャリッジベースとを嵌め合わせて係
合一体化の構成としており、この係合部付近の支持部材
５の上面には第２図で示す磁気ヘッド３の移動範囲８に
対応する位置にフェライトからなるシールド板７ａ及び
７ｂを接着剤９により接着している。この接着剤９には
ゴム系接着剤であるシリコン接着剤を用いており、硬化
後も所定の柔軟性を有している。したがって、温度変化
によりシールド板７と支持部材５との間に膨張率の差に
よる変形力が作用したとしても、前記接着剤９は柔軟性
があるため歪を吸収し、支持部材５は変形しない。よっ
て、温度変化による磁気ヘッド３のオフトラックを抑制
することができる。In the figure, a support member 5 formed of aluminum alloy
A spindle motor 2 and a carriage 4 are provided above, and a plurality of magnetic disks 1 are mounted on the spindle motor 2 at predetermined intervals. This support member 5 has a housing base that supports the spindle motor 2 and a carriage base that supports the carriage 4 that are fitted together to form an integrally engaged structure. Shield plates 7a and 7b made of ferrite are bonded with adhesive 9 at positions corresponding to the movement range 8 of the magnetic head 3 shown in FIG. The adhesive 9 is a silicone adhesive that is a rubber adhesive, and has a certain degree of flexibility even after curing. Therefore, even if a deforming force due to the difference in expansion coefficient acts between the shield plate 7 and the support member 5 due to a temperature change, the adhesive 9 absorbs the strain due to its flexibility, and the support member 5 does not deform. . Therefore, off-track of the magnetic head 3 due to temperature changes can be suppressed.
［発明の効果］
以上説明したように、本発明に依ればシールド板はゴム
系接着剤により支持部材に貼着されているため、温度変
化に基ずく支持部材の変形がないので、磁気ヘッドのオ
フトラックを抑制することができ信頼性の高い磁気ディ
スク装置とすることができる。[Effects of the Invention] As explained above, according to the present invention, since the shield plate is adhered to the support member with a rubber adhesive, there is no deformation of the support member due to temperature changes, so the magnetic head This makes it possible to suppress off-track and provide a highly reliable magnetic disk device.
第１図は本発明の実施例の磁気ディスク装置の要部を示
す断面図、第２図は第１図の平面図、第３図は従来の磁
気ディスク装置の分解斜視図、第４図は従来の磁気ディ
スク装置の要部を示す断面図である。
１・・・磁気ディスク、２・・・スピンドルモータ、３
・・・磁気ヘッド、４・・・キャリッジ、５・・・支持
部材、７ａ、７ｂ・・・シールド板、９・・・ゴム系接
着剤。FIG. 1 is a sectional view showing the main parts of a magnetic disk device according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is an exploded perspective view of a conventional magnetic disk device, and FIG. FIG. 2 is a cross-sectional view showing the main parts of a conventional magnetic disk device. 1...Magnetic disk, 2...Spindle motor, 3
... Magnetic head, 4... Carriage, 5... Supporting member, 7a, 7b... Shield plate, 9... Rubber adhesive.
Claims (1)
ディスクに対向して設けられた磁気ヘッドを搭載するキ
ャリッジと、前記スピンドルモータ及びキャリッジを支
持する支持部材とを備えた磁気ディスク装置において、
前記支持部材の少なくとも前記磁気ヘッドの移動範囲近
傍に、高透磁率からなるシールド板をゴム系の接着剤に
より接着固定するようにしたことを特徴とする磁気ディ
スク装置。A magnetic disk device comprising a spindle motor on which a magnetic disk is mounted, a carriage on which a magnetic head is mounted facing the magnetic disk, and a support member that supports the spindle motor and the carriage,
A magnetic disk drive characterized in that a shield plate made of high magnetic permeability is adhesively fixed to the support member at least in the vicinity of the movement range of the magnetic head using a rubber adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31695490A JPH04186586A (en) | 1990-11-21 | 1990-11-21 | Magnetic disk apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31695490A JPH04186586A (en) | 1990-11-21 | 1990-11-21 | Magnetic disk apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04186586A true JPH04186586A (en) | 1992-07-03 |
Family
ID=18082789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31695490A Pending JPH04186586A (en) | 1990-11-21 | 1990-11-21 | Magnetic disk apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04186586A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018074549A1 (en) * | 2016-10-19 | 2018-04-26 | 日本精工株式会社 | Sensor mounting structure, electric motor, and electric power steering device |
-
1990
- 1990-11-21 JP JP31695490A patent/JPH04186586A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018074549A1 (en) * | 2016-10-19 | 2018-04-26 | 日本精工株式会社 | Sensor mounting structure, electric motor, and electric power steering device |
| JPWO2018074549A1 (en) * | 2016-10-19 | 2019-06-24 | 日本精工株式会社 | Sensor assembly structure, electric motor, and electric power steering apparatus |
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