JPH03273562A - Magnetic disk - Google Patents
Magnetic diskInfo
- Publication number
- JPH03273562A JPH03273562A JP7376890A JP7376890A JPH03273562A JP H03273562 A JPH03273562 A JP H03273562A JP 7376890 A JP7376890 A JP 7376890A JP 7376890 A JP7376890 A JP 7376890A JP H03273562 A JPH03273562 A JP H03273562A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic sheet
- magnetic
- disk
- sheet
- hard disk
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract description 13
- 239000012790 adhesive layer Substances 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000005452 bending Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 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、情報の記録および再生を行うための磁気ディ
スクに関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic disk for recording and reproducing information.
従来の技術
第６図は、従来の磁気ディスクの断面斜視図である。第
６図において、１は磁気シート、２はセンターバブ、３
はセンターハブ２の基準面、４は磁気シート１を回転さ
せるためのスピンドルモータとの係合孔、５は接着層で
ある。磁気シート１の中心部近傍は接着層５を介してセ
ンターハブ２に固定されている。一方、磁気シート１の
外縁部は自由端となっているので、磁気シート１の製造
過程で生じる避けられない内部応力の作用によって、第
７図に示すように、磁気シート１の記録面が平面に対し
て大きく変位することが多い。BACKGROUND OF THE INVENTION FIG. 6 is a cross-sectional perspective view of a conventional magnetic disk. In Fig. 6, 1 is a magnetic sheet, 2 is a center bubble, and 3 is a magnetic sheet.
4 is a reference surface of the center hub 2, 4 is an engagement hole with a spindle motor for rotating the magnetic sheet 1, and 5 is an adhesive layer. The vicinity of the center of the magnetic sheet 1 is fixed to the center hub 2 via an adhesive layer 5. On the other hand, since the outer edge of the magnetic sheet 1 is a free end, the recording surface of the magnetic sheet 1 becomes flat as shown in FIG. There is often a large displacement with respect to
第８図は、従来の磁気ディスクを用いた記録再生装置の
一例を示すものである。FIG. 8 shows an example of a recording/reproducing apparatus using a conventional magnetic disk.
６は磁気ヘッド、７はスピンドルモータ、８は送りネジ
、９はステッピングモータ、１０はシート押えである。6 is a magnetic head, 7 is a spindle motor, 8 is a feed screw, 9 is a stepping motor, and 10 is a sheet presser.
磁気ヘッド６は、ステッピングモータ９を駆動して、送
りネジ８を回転させることによって、磁気シート１の径
方向に任意の位置に移動できる。シート押え１０は、磁
気シート１に第７図に示すような撓み変形があっても、
磁気シート１と磁気ヘッド６との緊密な接触を保証する
ために磁気ヘッド６の近傍において、磁気シート１を磁
気ヘッド６側に押え込むものである。The magnetic head 6 can be moved to any position in the radial direction of the magnetic sheet 1 by driving the stepping motor 9 and rotating the feed screw 8 . The sheet presser 10 can be used even if the magnetic sheet 1 has a bending deformation as shown in FIG.
In order to ensure close contact between the magnetic sheet 1 and the magnetic head 6, the magnetic sheet 1 is pressed toward the magnetic head 6 in the vicinity of the magnetic head 6.
発明が解決しようとする課題
しかしながら上記従来の構成の磁気ディスクを用いる記
録再生装置では、シート押え１０が必須であり、しかも
シート押え１０と磁気シート１が接触するので、磁気シ
ート１が傷ついたり、シート押え１０が摩耗して磁気シ
ート１に対する矯正力が弱まりへラドタッチが悪化する
という問題点があった。Problems to be Solved by the Invention However, in a recording/reproducing apparatus using a magnetic disk having the above conventional configuration, the sheet presser 10 is essential, and since the sheet presser 10 and the magnetic sheet 1 come into contact with each other, the magnetic sheet 1 may be damaged or There is a problem in that the sheet presser 10 is worn out and the corrective force against the magnetic sheet 1 is weakened, resulting in worsening of the rad touch.
本発明は上記従来の問題点を解決するもので、記録再生
装置にシート押えを設けなくとも、磁気シートと磁気ヘ
ッドの良好な接触が保証される新規な磁気ディスクを提
供することを目的とする。The present invention solves the above-mentioned conventional problems, and aims to provide a novel magnetic disk that ensures good contact between the magnetic sheet and the magnetic head without providing a sheet presser in the recording/reproducing device. .
課題を解決するための手段
この目的を達成するために本発明の磁気ディスクは、少
なくとも磁気シートより鋼性の高い硬質円盤の中心部近
傍に磁気シートを固着し、硬質円盤と磁気シートとの間
に空間部を設けている。Means for Solving the Problems In order to achieve this object, the magnetic disk of the present invention has a magnetic sheet fixed near the center of a hard disk whose steel is higher than that of the magnetic sheet, and a magnetic sheet between the hard disk and the magnetic sheet. A space is provided in the area.
作用
磁気シートを固着している硬質円盤が磁気シートの撓み
変形を矯正するとともに、磁気ヘッドを磁気シートに押
し当てても、空間部が逃げとなって、磁気シートや磁気
ヘッドの傷つきが防止される。The hard disk that fixes the working magnetic sheet corrects the bending deformation of the magnetic sheet, and even when the magnetic head is pressed against the magnetic sheet, the space acts as a relief and prevents the magnetic sheet and the magnetic head from being damaged. Ru.
実施例
以下本発明の実施例について、図面を参照しながら説明
する。EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings.
なお、従来例と同一の構成要素には同一の番号を施し、
説明を省略する。In addition, the same numbers are given to the same components as in the conventional example,
The explanation will be omitted.
第工図は、本発明の第１の実施例における磁気ディスク
の断面斜視図である。１１は金属円盤であり、その中心
部近傍に接着層５を介して磁気シート１が固着されてい
る。１２は磁気シート１と金属円盤１１の間に設けられ
た空間部、１３は磁気シート１の外縁近傍に設けられ、
基準面３とほぼ同一高さにある規制面である。磁気シー
ト１の撓み変形は、金属円盤１１から遠ざかる方向の撓
みは許されるが、金属円盤１１に近づく方向の挟みは規
制面工３によって抑止される。The first drawing is a cross-sectional perspective view of the magnetic disk in the first embodiment of the present invention. Reference numeral 11 denotes a metal disk, and the magnetic sheet 1 is fixed to the vicinity of its center via an adhesive layer 5. 12 is a space provided between the magnetic sheet 1 and the metal disk 11; 13 is provided near the outer edge of the magnetic sheet 1;
This is a regulating surface that is approximately at the same height as the reference surface 3. The magnetic sheet 1 is allowed to deflect in a direction away from the metal disk 11, but is prevented from being pinched in a direction toward the metal disk 11 by the restricting surface finishing 3.
第２図は上記実施例の磁気ディスクを記録再生装置に装
着した場合の断面図を示す。磁気ヘッド６の先端は空間
部１２に入り込む寸法に位置決めされている。しかしな
がら、磁気シート１はその内周部を基準面３に固着され
るとともにその外周部を規制面１３によって支えられる
ので、同図のように山形に撓む。その結果、磁気シート
１は自身の弾性復元力の作用で磁気ヘッド６に押し当て
られる。このように、本発明の磁気ディスクを用いれば
、記録再生装置に第８図に示したようなシート押え１０
がなくても、磁気シート１と磁気ヘッド６との緊密な接
触が得られる。FIG. 2 shows a cross-sectional view of the magnetic disk of the above embodiment installed in a recording/reproducing apparatus. The tip of the magnetic head 6 is positioned to fit into the space 12. However, since the magnetic sheet 1 has its inner periphery fixed to the reference surface 3 and its outer periphery supported by the regulating surface 13, it bends into a chevron shape as shown in the figure. As a result, the magnetic sheet 1 is pressed against the magnetic head 6 by its own elastic restoring force. As described above, if the magnetic disk of the present invention is used, a recording/reproducing apparatus can be equipped with a sheet presser 10 as shown in FIG.
Close contact between the magnetic sheet 1 and the magnetic head 6 can be obtained even without the magnetic sheet 1.
さらに、金属円盤１１は磁気シート１と一体的に回転す
るので、規制面１３が摩耗したり、規制面１３によって
磁気シート１が傷つく恐れは全くない。Furthermore, since the metal disk 11 rotates integrally with the magnetic sheet 1, there is no fear that the regulating surface 13 will wear out or that the magnetic sheet 1 will be damaged by the regulating surface 13.
第３図は本発明の第２の実施例における磁気ディスクの
断面図である。第１の実施例における磁気ディスクは、
基準面３．係合孔４．空間部１２゜規制面１３を同一の
金属体で一体的に形成したが、第３図に示すように、セ
ンタ一部材１４． 円盤部材１５．突起部材１６の３
部材に分けて構成しても本発明の目的を達成するのに何
ら支障はない。FIG. 3 is a sectional view of a magnetic disk in a second embodiment of the invention. The magnetic disk in the first embodiment is
Reference plane 3. Engagement hole 4. Although the space portion 12° regulating surface 13 is integrally formed of the same metal body, as shown in FIG. 3, the center member 14. Disc member 15. Projection member 16-3
There is no problem in achieving the object of the present invention even if the structure is divided into separate members.
したがって、磁気ディスクの使用目的や環境などにあわ
せて、最適な部材の組合せを選択することができる。Therefore, the optimum combination of members can be selected depending on the purpose of use of the magnetic disk, the environment, etc.
第４図は本発明の第３の実施例における磁気ディスクの
断面図である。磁気シート１．基準面３１空間部１２．
規制面１３は金属円盤１１の両側に配置されているので
、一つの磁気ディスクの記録容量は第１の実施例の２倍
とすることが可能である。FIG. 4 is a sectional view of a magnetic disk in a third embodiment of the present invention. Magnetic sheet 1. Reference plane 31 space 12.
Since the regulating surfaces 13 are arranged on both sides of the metal disk 11, the recording capacity of one magnetic disk can be twice that of the first embodiment.
第５図は本発明の第４の実施例における磁気ディスクの
断面図である。空間部１２は磁気シート１の外周方向に
解放されており、第１図、第３図および第４図に示した
他の実施例とは異なり、規制面１３が金属円盤１１から
突出していない。したがって、磁気シート１の撓み変形
を矯正する能力は低いが磁気ヘッド６の押し込みに対す
る許容度が大になるので、磁気ヘッド６の位置決め精度
をラフにできる。FIG. 5 is a sectional view of a magnetic disk in a fourth embodiment of the present invention. The space 12 is open toward the outer circumference of the magnetic sheet 1, and unlike the other embodiments shown in FIGS. 1, 3, and 4, the regulating surface 13 does not protrude from the metal disk 11. Therefore, although the ability to correct the bending deformation of the magnetic sheet 1 is low, the tolerance to the pushing of the magnetic head 6 is increased, so that the positioning accuracy of the magnetic head 6 can be made rough.
発明の効果
以上のように本発明の磁気ディスクは、硬質円盤に磁気
シートを、その中心部近傍において固着し、硬質円盤と
磁気シートとの間に空間部を設けることにより、磁気シ
ートと磁気ヘッドとの緊密な接触を半永久的に保証でき
、しかも磁気シートに傷が付いたりすることもない。Effects of the Invention As described above, in the magnetic disk of the present invention, a magnetic sheet is fixed to a hard disk near its center, and a space is provided between the hard disk and the magnetic sheet, so that the magnetic sheet and the magnetic head are Close contact with the magnetic sheet can be guaranteed semi-permanently, and the magnetic sheet will not be damaged.
第１図は本発明の第１の実施例における磁気ディスクの
断面斜視図、第２図は同実施例の磁気ディスクを記録再
生装置に装着した場合の断面図、第３図は本発明の第２
の実施例における磁気ディスクの断面図、第４図は本発
明の第３の実施例における磁気ディスクの断面図、第５
図は本発明の第４の実施例における磁気ディスクの断面
図、第図、第８図は同従来例の磁気ディスクを記録再生
装置に装着した場合の断面図である。
１・・・磁気シート、 ３・・・基準面、 ５・・
・接着層、６・・・磁気ヘッド、 １０・・・シート
押え、 １１・・・金属円盤、 １２・・・空間部
、 １３・・・規制面。FIG. 1 is a cross-sectional perspective view of a magnetic disk according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view when the magnetic disk of the same embodiment is installed in a recording/reproducing apparatus, and FIG. 3 is a cross-sectional perspective view of a magnetic disk according to a first embodiment of the present invention. 2
FIG. 4 is a cross-sectional view of the magnetic disk in the third embodiment of the present invention, and FIG.
The figure is a cross-sectional view of a magnetic disk according to a fourth embodiment of the present invention, and FIGS. 1...Magnetic sheet, 3...Reference surface, 5...
- Adhesive layer, 6... Magnetic head, 10... Sheet presser, 11... Metal disk, 12... Space, 13... Regulating surface.
Claims (1)
高い硬質円盤から成り、前記磁気シートは硬質円盤の中
心部近傍に固着され、前記硬質円盤と前記磁気シートと
の間に空間部が設けられたことを特徴とする磁気ディス
ク。It consists of a magnetic sheet and a hard disk having a higher steel than the magnetic sheet, the magnetic sheet is fixed near the center of the hard disk, and a space is provided between the hard disk and the magnetic sheet. A magnetic disk featuring
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2073768A JP2757526B2 (en) | 1990-03-23 | 1990-03-23 | Magnetic disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2073768A JP2757526B2 (en) | 1990-03-23 | 1990-03-23 | Magnetic disk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03273562A true JPH03273562A (en) | 1991-12-04 |
| JP2757526B2 JP2757526B2 (en) | 1998-05-25 |
Family
ID=13527726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2073768A Expired - Lifetime JP2757526B2 (en) | 1990-03-23 | 1990-03-23 | Magnetic disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2757526B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61248229A (en) * | 1985-04-26 | 1986-11-05 | Alps Electric Co Ltd | Magnetic recording and reproducing device |
-
1990
- 1990-03-23 JP JP2073768A patent/JP2757526B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61248229A (en) * | 1985-04-26 | 1986-11-05 | Alps Electric Co Ltd | Magnetic recording and reproducing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2757526B2 (en) | 1998-05-25 |
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